Stainless Steel Flanges
Stainless steel flanges are forged pipe fittings that bolt two pipe sections together to form a pressure-tight joint, also known as SS flanges. These components are produced from iron-chromium alloys, with a minimum chromium content of 10.5%, with nickel, molybdenum, and manganese added based on the grade. Tensile strength ranges from 485 MPa to 760 MPa; yield strength starts at 170 MPa. The chromium content forms a self-repairing passive oxide layer, which is why SS flanges withstand acids, chlorides, and high-temperature steam without a protective coating. Stainless steel flanges are used in various industries such as oil and gas pipelines, chemical reactors, pharmaceutical cleanrooms, food processing lines, and marine structures, wherever a joint cannot leak or corrode.
Stainless Steel Flanges Prices
Stainless steel flange prices change according to grade, size, pressure class, face type, and order quantity. The price covers standard forged flanges produced to ASTM A182 and dimensioned to ASME B16.5.
Approximate Price Range
The SS flange price for standard grades such as SS 304 and SS 316 runs from Rs 250 to Rs 1,875 per piece for sizes between 1/2" and 12" in Class 150 to Class 300. Speciality grades SS 904L, SMO 254, and 317L and larger NPS sizes or Class 900 and above push pricing significantly higher.
Factors Affecting Price
Grade and alloy content: Molybdenum and nickel are costly metals. SS 304 to SS 316L flanges can increase the per-piece price by 20–35%. SS 904L and SMO 254 cost 3 to 5 times the SS 304 base price.
Nominal pipe size and wall schedule: A 2" flange costs much less than a 12" flange because larger sizes use more material and require more machining. Thicker schedules, like 80S, also increase the weight and production cost compared to lighter schedules such as 5S.
Pressure class: Class 150 flanges use less material than Class 1500 or Class 2500. The bore tolerance and face finish requirements also tighten with pressure class, adding machining cost.
Flange type: Weld neck flanges require precision bore machining and a tapered hub. The slip-on and blind flanges need less machining. The price difference between a weld neck and a slip-on is the same; depending on the grade, it can increase by 15–25%.
Market conditions and order volume: Nickel and chromium commodity prices move the raw material cost directly. Bulk orders placed with an established SS flange supplier typically attract 8–15% discounts over spot purchases.
Stainless Steel Flange Grades
Grade selection drives everything, such as corrosion resistance, temperature limit, weldability, and cost. Below are the 32 grades across austenitic, ferritic, martensitic, duplex, and precipitation-hardened families:
- Stainless Steel SMO 254 Flanges
- Stainless Steel 304 Flanges
- Stainless Steel 310H Flanges
- Stainless Steel 303 Flanges
- Stainless Steel 304L Flanges
- Stainless Steel 310 MoLN Flanges
- Stainless Steel 304LN Flanges
- Stainless Steel 304N Flanges
- Stainless Steel 310 Flanges
- Stainless Steel 304H Flanges
- Stainless Steel 310S Flanges
- Stainless Steel 202 Flanges
- Stainless Steel 309H Flanges
- Stainless Steel 321 Flanges
- Stainless Steel 348 Flanges
- Stainless Steel 347H Flanges
- Stainless Steel 321H Flanges
- Stainless Steel 347 Flanges
- Stainless Steel 904L Flanges
- Stainless Steel 348H Flanges
- Stainless Steel 316Ti Flanges
- Stainless Steel 316 Flanges
- Stainless Steel 317 Flanges
- Stainless Steel 316N Flanges
- Stainless Steel 316L Flanges
- Stainless Steel 316H Flanges
- Stainless Steel 317L Flanges
- Stainless Steel 316LN Flanges
- Stainless Steel 253MA Flanges
- Stainless Steel 431 Flanges
- Stainless Steel 17-7 PH Flanges
- Stainless Steel 17-4 PH Flanges
Types Of Stainless Steel Flanges
There are 8 key types of stainless steel flanges, each designed for specific piping setups, pressure levels, and maintenance needs. Choosing the wrong type can lead to expensive mistakes.
- Weld Neck Flange (WN)
- Slip-On Flange (SO)
- Socket Weld Flange (SW)
- Blind Flange (BL)
- Threaded Flange
- Lap Joint Flange
- Reducing Flange
- Spectacle Blind Flange
Stainless Steel Flanges Specifications
The following table covers the essential technical parameters for stainless steel flanges as specified by international standards. Use this as a quick reference for material requisitions or vendor evaluations.
|
Parameter |
Specification |
|
Material Standards |
ASTM A182 / ASME SA182 |
|
Common Grades |
F304 / 304L, F316 / 316L |
|
Pressure Ratings |
Class 150 to Class 2500 |
|
Size Range |
1/2" to 24" |
|
Dimensional Standard |
ASME B16.5 |
|
Product Types |
Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint |
|
Face Type |
Raised face and other standard flange faces, depending on type |
|
Manufacturing |
Forged stainless steel flanges |
|
Typical Applications |
Industrial piping, pressure systems, corrosive service |
Stainless Steel Flanges Size Chart
All dimensions below are as per ASME B16.5, Class 150 raised-face configuration. Sizes range from 1/2" (DN 15) through 12" (DN 300); larger diameters up to 24" are covered under ASME B16.47.
|
NPS / DN |
OD of Flange |
Bolt Circle Dia. |
No. of Bolt Holes |
Bolt Hole Dia. |
Flange Thickness |
Raised Face Dia. |
|
1/2" / DN 15 |
88.9 mm |
60.3 mm |
4 |
11.1 mm |
15.9 mm |
34.9 mm |
|
3/4" / DN 20 |
95.3 mm |
66.7 mm |
4 |
11.1 mm |
15.9 mm |
42.9 mm |
|
1" / DN 25 |
114.3 mm |
82.6 mm |
4 |
11.1 mm |
15.9 mm |
50.8 mm |
|
1 1/4" / DN 32 |
117.5 mm |
88.9 mm |
4 |
15.9 mm |
20.6 mm |
63.5 mm |
|
1 1/2" / DN 40 |
127.0 mm |
98.4 mm |
4 |
17.5 mm |
22.2 mm |
73.0 mm |
|
2" / DN 50 |
152.4 mm |
120.6 mm |
4 |
19.0 mm |
25.4 mm |
92.1 mm |
|
2 1/2" / DN 65 |
177.8 mm |
139.7 mm |
4 |
22.2 mm |
28.6 mm |
104.8 mm |
|
3" / DN 80 |
190.5 mm |
152.4 mm |
4 |
22.2 mm |
28.6 mm |
127.0 mm |
|
4" / DN 100 |
228.6 mm |
190.5 mm |
8 |
19.0 mm |
31.8 mm |
157.2 mm |
|
5" / DN 125 |
254.0 mm |
215.9 mm |
8 |
23.8 mm |
36.5 mm |
185.7 mm |
|
6" / DN 150 |
279.4 mm |
241.3 mm |
8 |
25.4 mm |
39.7 mm |
215.9 mm |
|
8" / DN 200 |
342.9 mm |
298.5 mm |
8 |
28.6 mm |
47.8 mm |
269.9 mm |
|
10" / DN 250 |
406.4 mm |
362.0 mm |
12 |
31.8 mm |
53.9 mm |
323.8 mm |
|
12" / DN 300 |
482.6 mm |
431.8 mm |
12 |
34.9 mm |
60.5 mm |
381.0 mm |
Schedule Chart Of Stainless Steel Flanges
The bore schedule of a flange must match the connected pipe schedule. Use this chart to confirm the correct bore, flange type, and pressure class combination before raising a purchase order.
|
NPS / DN |
Bore / Schedule Reference |
Typical Flange Type |
Pressure Class |
|
1/2" / DN 15 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
3/4" / DN 20 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
1" / DN 25 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
1 1/4" / DN 32 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
1 1/2" / DN 40 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
2" / DN 50 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
2 1/2" / DN 65 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
3" / DN 80 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
4" / DN 100 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
6" / DN 150 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
8" / DN 200 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
10" / DN 250 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
12" / DN 300 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
14" / DN 350 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
16" / DN 400 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
18" / DN 450 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
20" / DN 500 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
24" / DN 600 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
Key Features Of Stainless Steel Flanges
Stainless steel flanges offer six key properties that make them more reliable than carbon steel or cast iron options in demanding service conditions:
- Corrosion Resistance
- High Strength
- Durability
- Versatility
- Ease of Installation
- Aesthetic Appeal
Applications Of Stainless Steel Flanges
Stainless steel flanges are used in 11 key industries where piping joints must withstand pressure cycling, corrosive media, tight hygiene regulations, and extremely high temperatures.
- Oil and Gas Industry
- Chemical Processing
- Water Treatment
- Power Generation
- Food and Beverage Industry
- Pharmaceutical Industry
- Marine Applications
- Construction and Infrastructure
- Aerospace and Defence
- Pulp and Paper Industry
- Automotive Manufacturing
How To Choose The Right Stainless Steel Flange Supplier And Manufacturer?
The right stainless steel flange manufacturer is not simply the one with the lowest quoted price. Evaluate 4 areas before placing an order; skipping any one of these is where procurement mistakes originate.
Selecting The Right Supplier And Manufacturer
Work only with a stainless steel flanges manufacturer that holds ISO 9001 certification and maintains in-house forging, heat treatment, and non-destructive testing (NDT). Request Mill Test Reports (MTRs) for every order, not just on request.
Technical Considerations
Confirm the SS flange manufacturer produces to ASTM A182 / ASME SA182 and dimensions flanges per ASME B16.5. Pressure class availability across Class 150 to Class 2500 is non-negotiable for any project with variable operating pressures. Verify that the required grade 304L, 316L, 317L, or a speciality alloy is part of the standard production range, not a special order that extends lead time.
Evaluating Supplier Credibility
A credible SS flange supplier maintains documented third-party inspection reports, consistent delivery records, and export experience if your project is international. Also, ensure each batch of stainless steel flanges is delivered with full mill traceability: heat number, chemical analysis, and mechanical test results as per the required standard.
Procurement Strategy
For volume orders, blanket purchase agreements lock in the SS flange price and secure production slots before nickel prices move. For urgent requirements, confirm that the stainless steel flange suppliers you shortlist hold ready stock in the most common grades like 304, 304L, 316, and 316L across 1/2" to 6" sizes. Factor in freight, inspection charges, and import duties when comparing the final landed cost across multiple vendors.
Stainless steel flanges are forged pipe fittings that bolt two pipe sections together to form a pressure-tight joint, also known as SS flanges. These components are produced from iron-chromium alloys, with a minimum chromium content of 10.5%, with nickel, molybdenum, and manganese added based on the grade. Tensile strength ranges from 485 MPa to 760 MPa; yield strength starts at 170 MPa. The chromium content forms a self-repairing passive oxide layer, which is why SS flanges withstand acids, chlorides, and high-temperature steam without a protective coating. Stainless steel flanges are used in various industries such as oil and gas pipelines, chemical reactors, pharmaceutical cleanrooms, food processing lines, and marine structures, wherever a joint cannot leak or corrode.
Stainless Steel Flanges Prices
Stainless steel flange prices change according to grade, size, pressure class, face type, and order quantity. The price covers standard forged flanges produced to ASTM A182 and dimensioned to ASME B16.5.
Approximate Price Range
The SS flange price for standard grades such as SS 304 and SS 316 runs from Rs 250 to Rs 1,875 per piece for sizes between 1/2" and 12" in Class 150 to Class 300. Speciality grades SS 904L, SMO 254, and 317L and larger NPS sizes or Class 900 and above push pricing significantly higher.
Factors Affecting Price
Grade and alloy content: Molybdenum and nickel are costly metals. SS 304 to SS 316L flanges can increase the per-piece price by 20–35%. SS 904L and SMO 254 cost 3 to 5 times the SS 304 base price.
Nominal pipe size and wall schedule: A 2" flange costs much less than a 12" flange because larger sizes use more material and require more machining. Thicker schedules, like 80S, also increase the weight and production cost compared to lighter schedules such as 5S.
Pressure class: Class 150 flanges use less material than Class 1500 or Class 2500. The bore tolerance and face finish requirements also tighten with pressure class, adding machining cost.
Flange type: Weld neck flanges require precision bore machining and a tapered hub. The slip-on and blind flanges need less machining. The price difference between a weld neck and a slip-on is the same; depending on the grade, it can increase by 15–25%.
Market conditions and order volume: Nickel and chromium commodity prices move the raw material cost directly. Bulk orders placed with an established SS flange supplier typically attract 8–15% discounts over spot purchases.
Stainless Steel Flange Grades
Grade selection drives everything, such as corrosion resistance, temperature limit, weldability, and cost. Below are the 32 grades across austenitic, ferritic, martensitic, duplex, and precipitation-hardened families:
- Stainless Steel SMO 254 Flanges
- Stainless Steel 304 Flanges
- Stainless Steel 310H Flanges
- Stainless Steel 303 Flanges
- Stainless Steel 304L Flanges
- Stainless Steel 310 MoLN Flanges
- Stainless Steel 304LN Flanges
- Stainless Steel 304N Flanges
- Stainless Steel 310 Flanges
- Stainless Steel 304H Flanges
- Stainless Steel 310S Flanges
- Stainless Steel 202 Flanges
- Stainless Steel 309H Flanges
- Stainless Steel 321 Flanges
- Stainless Steel 348 Flanges
- Stainless Steel 347H Flanges
- Stainless Steel 321H Flanges
- Stainless Steel 347 Flanges
- Stainless Steel 904L Flanges
- Stainless Steel 348H Flanges
- Stainless Steel 316Ti Flanges
- Stainless Steel 316 Flanges
- Stainless Steel 317 Flanges
- Stainless Steel 316N Flanges
- Stainless Steel 316L Flanges
- Stainless Steel 316H Flanges
- Stainless Steel 317L Flanges
- Stainless Steel 316LN Flanges
- Stainless Steel 253MA Flanges
- Stainless Steel 431 Flanges
- Stainless Steel 17-7 PH Flanges
- Stainless Steel 17-4 PH Flanges
Types Of Stainless Steel Flanges
There are 8 key types of stainless steel flanges, each designed for specific piping setups, pressure levels, and maintenance needs. Choosing the wrong type can lead to expensive mistakes.
- Weld Neck Flange (WN)
- Slip-On Flange (SO)
- Socket Weld Flange (SW)
- Blind Flange (BL)
- Threaded Flange
- Lap Joint Flange
- Reducing Flange
- Spectacle Blind Flange
Stainless Steel Flanges Specifications
The following table covers the essential technical parameters for stainless steel flanges as specified by international standards. Use this as a quick reference for material requisitions or vendor evaluations.
|
Parameter |
Specification |
|
Material Standards |
ASTM A182 / ASME SA182 |
|
Common Grades |
F304 / 304L, F316 / 316L |
|
Pressure Ratings |
Class 150 to Class 2500 |
|
Size Range |
1/2" to 24" |
|
Dimensional Standard |
ASME B16.5 |
|
Product Types |
Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint |
|
Face Type |
Raised face and other standard flange faces, depending on type |
|
Manufacturing |
Forged stainless steel flanges |
|
Typical Applications |
Industrial piping, pressure systems, corrosive service |
Stainless Steel Flanges Size Chart
All dimensions below are as per ASME B16.5, Class 150 raised-face configuration. Sizes range from 1/2" (DN 15) through 12" (DN 300); larger diameters up to 24" are covered under ASME B16.47.
|
NPS / DN |
OD of Flange |
Bolt Circle Dia. |
No. of Bolt Holes |
Bolt Hole Dia. |
Flange Thickness |
Raised Face Dia. |
|
1/2" / DN 15 |
88.9 mm |
60.3 mm |
4 |
11.1 mm |
15.9 mm |
34.9 mm |
|
3/4" / DN 20 |
95.3 mm |
66.7 mm |
4 |
11.1 mm |
15.9 mm |
42.9 mm |
|
1" / DN 25 |
114.3 mm |
82.6 mm |
4 |
11.1 mm |
15.9 mm |
50.8 mm |
|
1 1/4" / DN 32 |
117.5 mm |
88.9 mm |
4 |
15.9 mm |
20.6 mm |
63.5 mm |
|
1 1/2" / DN 40 |
127.0 mm |
98.4 mm |
4 |
17.5 mm |
22.2 mm |
73.0 mm |
|
2" / DN 50 |
152.4 mm |
120.6 mm |
4 |
19.0 mm |
25.4 mm |
92.1 mm |
|
2 1/2" / DN 65 |
177.8 mm |
139.7 mm |
4 |
22.2 mm |
28.6 mm |
104.8 mm |
|
3" / DN 80 |
190.5 mm |
152.4 mm |
4 |
22.2 mm |
28.6 mm |
127.0 mm |
|
4" / DN 100 |
228.6 mm |
190.5 mm |
8 |
19.0 mm |
31.8 mm |
157.2 mm |
|
5" / DN 125 |
254.0 mm |
215.9 mm |
8 |
23.8 mm |
36.5 mm |
185.7 mm |
|
6" / DN 150 |
279.4 mm |
241.3 mm |
8 |
25.4 mm |
39.7 mm |
215.9 mm |
|
8" / DN 200 |
342.9 mm |
298.5 mm |
8 |
28.6 mm |
47.8 mm |
269.9 mm |
|
10" / DN 250 |
406.4 mm |
362.0 mm |
12 |
31.8 mm |
53.9 mm |
323.8 mm |
|
12" / DN 300 |
482.6 mm |
431.8 mm |
12 |
34.9 mm |
60.5 mm |
381.0 mm |
Schedule Chart Of Stainless Steel Flanges
The bore schedule of a flange must match the connected pipe schedule. Use this chart to confirm the correct bore, flange type, and pressure class combination before raising a purchase order.
|
NPS / DN |
Bore / Schedule Reference |
Typical Flange Type |
Pressure Class |
|
1/2" / DN 15 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
3/4" / DN 20 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
1" / DN 25 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
1 1/4" / DN 32 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
1 1/2" / DN 40 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
2" / DN 50 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
2 1/2" / DN 65 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
3" / DN 80 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
4" / DN 100 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
6" / DN 150 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
8" / DN 200 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
10" / DN 250 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
12" / DN 300 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
14" / DN 350 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
16" / DN 400 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
18" / DN 450 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
20" / DN 500 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
|
24" / DN 600 |
Sch 5S, 10S, 40S, 80S |
Weld Neck, Slip-On, Threaded, Socket Weld |
Class 150, 300, 600, 900, 1500, 2500 |
Key Features Of Stainless Steel Flanges
Stainless steel flanges offer six key properties that make them more reliable than carbon steel or cast iron options in demanding service conditions:
- Corrosion Resistance
- High Strength
- Durability
- Versatility
- Ease of Installation
- Aesthetic Appeal
Applications Of Stainless Steel Flanges
Stainless steel flanges are used in 11 key industries where piping joints must withstand pressure cycling, corrosive media, tight hygiene regulations, and extremely high temperatures.
- Oil and Gas Industry
- Chemical Processing
- Water Treatment
- Power Generation
- Food and Beverage Industry
- Pharmaceutical Industry
- Marine Applications
- Construction and Infrastructure
- Aerospace and Defence
- Pulp and Paper Industry
- Automotive Manufacturing
How To Choose The Right Stainless Steel Flange Supplier And Manufacturer?
The right stainless steel flange manufacturer is not simply the one with the lowest quoted price. Evaluate 4 areas before placing an order; skipping any one of these is where procurement mistakes originate.
Selecting The Right Supplier And Manufacturer
Work only with a stainless steel flanges manufacturer that holds ISO 9001 certification and maintains in-house forging, heat treatment, and non-destructive testing (NDT). Request Mill Test Reports (MTRs) for every order, not just on request.
Technical Considerations
Confirm the SS flange manufacturer produces to ASTM A182 / ASME SA182 and dimensions flanges per ASME B16.5. Pressure class availability across Class 150 to Class 2500 is non-negotiable for any project with variable operating pressures. Verify that the required grade 304L, 316L, 317L, or a speciality alloy is part of the standard production range, not a special order that extends lead time.
Evaluating Supplier Credibility
A credible SS flange supplier maintains documented third-party inspection reports, consistent delivery records, and export experience if your project is international. Also, ensure each batch of stainless steel flanges is delivered with full mill traceability: heat number, chemical analysis, and mechanical test results as per the required standard.
Procurement Strategy
For volume orders, blanket purchase agreements lock in the SS flange price and secure production slots before nickel prices move. For urgent requirements, confirm that the stainless steel flange suppliers you shortlist hold ready stock in the most common grades like 304, 304L, 316, and 316L across 1/2" to 6" sizes. Factor in freight, inspection charges, and import duties when comparing the final landed cost across multiple vendors.
Stainless Steel Flanges Suppliers
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Stainless Steel Flanges FAQ's
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jenish metal & alloys inc 
n/a - n/a - india
aashish steel
n/a - n/a - india
shribhairav forge
n/a - n/a - india
chopra metal
kutch - gujarat - india
nitech stainless ainc
n/a - n/a - india
steel sales company
mumbai - maharashtra - india
bhavya forged flanges
n/a - n/a - india
simplex metal and alloys
mumbai - maharashtra - india
apexia metal
mumbai - maharastra - india
raw matnfab
mumbai - maharashtra - india
repute steel and engineering co.
mumbai - maharashtra - india
toshiba tubes india
mumbai - maharashtra - india
nirav overseas
n/a - n/a - india
toshiba metal
n/a - n/a - india
sanghvi hydraulic fittings
n/a - n/a - india
raaj sagar steels
mumbai - maharashtra - india
metcore steel & alloys
mumbai - maharashtra - india
techno pipes & fittings
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leoscor export
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simon steel india
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thwinox dairy & pharma fittings
mumbai - maharashtra - india
kenco tubes
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dalmine flanges
mumbai - maharashtra - india
rotex metals ( rotex group of company)
chennai - tamil nadu - india
anchor pipe fittings ( rotex group of company)
mumbai - maharashtra - india
alpha overseas
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rajpushp metal and engg co
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rapidsteelandengg
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kalp industries
mumbai - maharashtra - india
metcore alloys
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jain steels corporation
delhi - delhi - india
prime tube impex
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skytech metal pvt.ltd
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krone impex
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belmount nickel & alloys
mumbai - maharashtra - india
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n/a - n/a - india
metal yard
mumbai - maharashtra - india
kailash steel
n/a - n/a - india
bu-lok
mumbai - maharashtra - india
shikhar steel corporation
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neelkamal alloys llp
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kanak metal
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vishal tube industries
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sanghvi metal corporation
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metleader
beijing - beijing shi - china
ganpat metals pvt limited
mumbai - maharashtra - india
centerway steel co., ltd
changsha - hunan - china
heer inox
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cangzhou sijin international trading co.,ltd
cangzhou - hebei - china
apple steels
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bhavya stainless pvt ltd
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amco metals
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nilam steelage india private limited
mumbai - maharashtra - india
instrumxx industries
mumbai - maharashtra - india
unimix metal corporations
mumbai - maharashtra - india
universal metal corporation
mumbai - maharashtra - india
pioneer forge india
n/a - n/a - india
wuxi changrun power petrochemical general accessories co., ltd.
wuxi - jiangsu - china
robust special metals
mumbai - maharashtra - india
prashaant steel
n/a - n/a - india
tubes india
mumbai - maharashtra - india
sanjay metal india
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ample alloys
mumbai - maharashtra - india
tricon steel and alloys
mumbai - maharashtra - india
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mumbai - maharastra - india
sv stainless steels
mumbai - maharashtra - india
apple steel centre
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mumbai - maharashtra - india
monel forge and fittings
mumbai - maharashtra - india
siddhgiri tubes
mumbai - maharashtra - india
centerway steel co., ltd
changsha - hunan - china
meraki star metals oil & gas equipment trading l.l.c.
dubai - dubai - united arab emirates
padmavati steel engg co.
mumbai - maharashtra - india
parasmani engineers india
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rajendra forge fitting & flanges
mumbai - maharashtra - india
randhir metal and alloys pvt ltd
mumbai - maharashtra - india
kanak steel & engineering company
mumbai - maharashtra - india
nissan steel
mumbai - maharashtra - india
shree metal
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absolute metal solutions
mumbai - maharashtra - india
renox impex
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nickel alloy corporation
n/a - n/a - india
m m metattade pvt ltd
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madhukar steel centre
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rajgranth industries pvt ltd
vasai - maharashtra - india
aries alloys
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isteel india
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jay steel corporation
mumbai - maharashtra - india
metal forge india
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acero alloys
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dinmani pipes & fittings
mumbai - maharashtra - india
hebei jinsheng pipe fitting manufacturing co., lt
cangzhou - hebei - china
baxtel alloys
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riddhi siddhi tubes
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metal udyog india
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steel inox private limited
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sativa international
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heubach international
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rajveer metals
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priyanka steels
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r s metal
mumbai - maharashtra - india
rishabh steel industries
mumbai - maharashta - india
shenzhen jieling industries co.,ltd
shenzhen - guangdong - china
altra enterprise
ahmedabad - gujarat - india
arbuda steel india
navi mumbai panvel - maharashtra - india
amey steel impex
mumbai - maharashtra - india
sanjay steels
mumbai - maharashtra - india
amanat steels pvt ltd
mumbai - maharashtra - india
reliable engineering solutions
vadodara - gujarat - india
steelmech piping inc
mumbai - maharashtra - india
rockwell fittings
ankleshwar - gujarat - india
kms multi engineers llp
bhavnagar - gujarat - india
r.s. metal
n/a - n/a - india
micron steel & tubes
mumbai - maharastra - india
yantai xinbaoshang material technology co., ltd.,
yantai - shandong - china
cadaxion technologies
coimbatore - tamil nadu - india
remi tubes industries
mumbai - maharashtra - india
jayhind metal &tubes
mumbai - maharashtra - india
regal sales corporation
n/a - n/a - india
stainless bazar ind. ltd.
new delhi - delhi - india
the egyptian europe company
cairo - cairo - egypt
bhansali inc
mumbai - maharashtra - india
stanley alloys
mumbai - maharashtra - india
shatrunjay special alloy
mumbai - maharashtra - india
sangam pipe fitting
mumbai - maharashtra - india
dongguan xinqida precision hardware accessories co., ltd.
dongguan - guangdong - china
viktechfittings
mumbai - maharashtra - india
unifit metalloys inc
mumbai - maharashtra - india
riddhi siddhi forge and fitting
mumbai - maharashtra - india
triton metal and alloys
mumbai - maharashtra - india
kalpataru piping solutions
mumbai - maharashtra - india
hilton forge india
n/a - n/a - india
leoscor alloys & steel inc.
mumbai - maharashtra - india
kriton steel and engineering co.
mumbai - maharashtra - india
katariya steel
mumbai - maharashtra - india
jaydeep steels
mumbai - maharashtra - india
neon metals impex pvt. ltd.
n/a - n/a - india
jainex metal industries
mumbai - maharashtra - india
mahabali steel centre
mumbai - maharashtra - india
mangalam steel
n/a - n/a - india
renine metalloy
mumbai - maharashtra - india
nandishwar steel
mumbai - maharashtra - india
accurate steel centre
mumbai - maharastra - india
belmount industrial solutions
n/a - n/a - india
a.b.stainless steel
mumbai - maharashtra - india
fit-wel industries llp
mumbai - maharashtra - india
century steel corporation
n/a - n/a - india
m m metal international
mumbai - maharashtra - india
piyush steel pipes
mumbai - maharashtra - india
manifold pipe solution inc
mumbai - maharashtra - india
online metals india
n/a - n/a - india
tube fit industries
mumbai - maharashtra - india
rajveer stainless and alloys
mumbai - maharashtra - india
nefton exports industries
mumbai - maharashtra - india
shashwat stainless inc.
n/a - n/a - india
krypton alloys
n/a - n/a - india
sanghvi overseas
mumbai - maharashtra - india
sparsh impex
mumbai - maharashtra - india
nippen tubes
mumbai - maharashatra - india
citizen metals pvt. ltd
mumbai - maharshtra - india
jainex steel and metal
mumbai - maharashtra - india
suraj steelmet pvt. ltd.
ahmedabad - gujarat - india
guru gautam steels
mumbai - maharashtra - india
rajendra industrial corporation
mumbai - maharashtra - india
jain steels corporation
new delhi - delhi - india
piyush steel
mumbai - maharashtra - india
ramdev steel centre
mumbai - maharashtra - india
technolloy inc
mumbai - maharashtra - india
citizen flanges pvt.ltd
n/a - n/a - india
united forged industries
mumbai - maharasthra - india
sagar prakash alloys
mumbai - maharashtra - india
steelage alloys llp pvt. ltd
mumbai - maharashtra - india
shubh alloys inc
mumbai - maharashtra - india
m.a.international
mumbai - maharshtra - india
ancon steel industries
n/a - n/a - india
bhagyalaxmi industrial
mumbai - maharashtra - india
ferrobend
n/a - n/a - india
gayatri tube india
mumbai - maharashtra - india
preston pipes and alloys
mumbai - maharashtra - india
astec tubes
mumbai - maharashtra - india
dinesh tube india
mumbai - maharashtra - india
globex steel
mumbai - maharashtra - india
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