ASTM A403 WP304 Stainless Steel Pipe Fittings manufacturers in India
Certificates & Approvals
Our Products
304 Stainless Steel Pipe Fittings, SS 304 Buttweld Fittings manufacturers in India
Burkhard Steel Industries is a leading manufacturer and exporter of pipe fittings and flanges in India with over 3 decades of industry experience. We specialize in manufacturing high-quality products in accordance with ASME B16.9 / ASME B16.11 standards while maintaining world-class quality, competitive pricing, and continuous innovation through advanced manufacturing systems and efficient production processes.
As one of the trusted pipe fittings manufacturers in Gujarat, India, we offer a comprehensive range of stainless steel pipe fittings and flanges including A403 WP304/316 Stainless Steel Tee, Stub Ends, Double Flanged Fittings, Fabricated Fittings, Threaded Fittings, NPT Fittings, SS 304/316 Pipe Fittings, Buttweld Fittings, U Bends, Reducers, 5D/3D Elbows, Tube Fittings, Cold Formed Butt-Weld Fittings, Extruded Outlets, Manifolds, and other products available in various sizes and pressure ratings to meet diverse industrial requirements.
With a modern manufacturing infrastructure in Gujarat, India, Burkhard Steel Industries has made substantial investments in advanced production technology, automation systems, sophisticated machinery, and sustainable manufacturing processes to establish a world-class production environment. We source premium-quality raw materials from trusted and globally recognized suppliers and manufacture products in compliance with ASME, EN, ISO, and DIN standards to ensure superior quality, reliable performance, timely delivery, and complete customer satisfaction.
As a growing exporter of stainless steel pipe fittings from India, Burkhard Steel Industries Pvt. Ltd. has developed a strong international presence across Sri Lanka, Kingdom of Saudi Arabia, Kuwait, Thailand, Indonesia, Trinidad (West Indies), Iran, United Arab Emirates (UAE), Taiwan (R.O.C.), Singapore, Qatar, and Japan. Through consistent quality standards and dependable service, we continue to strengthen our position as a trusted pipe fittings and flanges exporter from Gujarat, India.
Table of Content
What is ASTM A403 Stainless Steel Pipe Fittings?
A403 Stainless Steel covers the standard for wrought austenitic stainless steel fittings for pressure piping applications. The material for fittings shall consist of stainless steel forgings, stainless steel bars, stainless steel plates, or seamless or welded stainless steel tubular products. Stainless Steel forging or shaping operations shall be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations.
All ASTM A403 Stainless Steel Pipe Fittings shall undergo heat-treatment. Chemical and product analyses shall be performed and shall conform to the required chemical composition in carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and titanium
ASTM A403 Stainless Steel Pipe Fittings Specifications
A403 Stainless Steel Buttweld (B/W) Fittings Material | Size (in mm) | Sch. & Swg. | SS Fittings Specification | SS Pipe Fittings Items |
A403 Stainless Steel Seamless Fittings | 15 NB to 300 NB | Sch. 5 to Sch. XXs | A-403 B/W ANSI B16.9 | A403 WP304/316 Bend (Long & Short) R=2D,3D,5D,10D Etc A403 WP304/316 Elbow ( 180o, 90o & 45o) A403 WP304/316 Tee (Equal & Unequal) |
A403 Stainless Steel Welded [ERW] Fittings | 15 NB to 600 NB | Sch. 5 to Sch. 80s | A-403 B/W ANSI B16.9 | A403 WP304/316 Reducer (Con & Ecc) CAP A403 WP304/316 Stubend (Long & Short) A403 WP304/316 Nipple (Barrel) |
Stainless Steel Pipe Fittings Production Range
Specification | ASTM A182 / A403 & ASME SA182 / SA403 |
Grades | 201, 202, 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L |
Type | Seamless / Welded / Fabricated |
Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
Range | ½”NB to 48″NB in Sch 10s, 40s, 80s, 160s, XXS. |
Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
NOTE:-
Material | AISI 304, AISI 304L, AISI 304H, AISI 316, AISI 316L, AISI 316LN, AISI 316Ti, AISI 309, AISI 317, AISI 317L, ASTM A403 310S, AISI 321, AISI 321H, AISI 347, AISI 347H, AISI 410, AISI 420, AISI 446, AISI 202 DIN 1.4301/7, DIN 1.4401/4, DIN 1.4541, DIN 1.4571 |
Value Added Service | Polish (Electro & Commercial) Heat Treatment Annealed & Pickled, Sand Blasting Machining Etc. |
Standard | ASTM,ASM |
End Connection | Butt Weld |
Type | Straight, Seamless / Welded / Fabricated Stainless Fittings |
Designation | A 403 Pipe Fittings, SA 403 Fittings |
Dimension Standard | Manufacturing as per ASME/ANSI B16.9, ASME B16.25, ASME B16.28, ASME B16.49, MSS-SP-43 Fittings |
Thickness | Sch 5s Fittings, Sch 10s Fittings, Sch 40s Fittings, Sch 80s Fittings, Sch 160s Fittings, Sch XXS Fittings manufacturers in India |
Size | 1/2 Inch to 48 Inch |
Two Joint / Two Halve 304 Butt weld Fittings Size | 6″ to 48″ |
Producing A403 Stainless Steel Pipe Fittings in form of |
|
Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom Pipe Bend |
Manufacturing Specification | ASME: ANSI B16.9, ANSI B16.28, ASME B16.25, MSS-SP-43, DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011, EN: EN10253-1, EN10253-2 |
Procure Raw Materials from | Japanese Mills, European Mills, US Mills, Korean Mills |
Other Form | Dairy Fitting |
Test Certificate | With Manufacturer Test Certificate Under Third Party Inspection |
Specialize | Long Bend with Radius – R = 3D, 5D & 10D Pigabble Bend & As per your drawing Minimum Wall Thinning rate & Ovality, No WrinklesLong radius Bend, Piggable Bend, Hot bend, With R=3D, 5D, 6D, 8D, 10D & Customized Bend |
Seamless/ Welded Pipe Fittings 100% Radiography Tested
Stainless Steel Forged Fittings Manufacturer in India, ANSI B16.11 Socket Weld and Threaded Fittings Suppliers
Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report as per client specification.
Stainless Steel Pipe/Tube Fittings Manufacturing Standards
304/316 Stainless Steel Pipe Fittings and Flanges Specifications
Grade | Specification |
Stainless 304/304L, 304/304H | A/SA403, A/SA182 |
Stainless 316/316L, 316/316H | A/SA403, A/SA182 |
Stainless 317/317L | A/SA403, A/SA182 |
Stainless 321/321H | A/SA403, A/SA182 |
Stainless 347/347H | A/SA403, A/SA182 |
Standard | Description |
ASTM A182/A182M | Forged or rolled alloy steel pipe flanges, forged fittings and valves and parts for high temperature service. Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings |
ASTM A403/A403M | Wrought austenitic stainless steel piping fittings. |
ASTM A815/A815M | Wrought ferritic, ferritic/austenitic and martensitic stainless steel piping fittings. |
AS 2129 | Flanges for pipes, valves and fittings |
ANSI/ASME B1.20.1 | Pipe threads, general purpose (inch). |
ANSI B16.5 | Steel pipe flanges and flanged fittings. |
ANSI B16.9 | Factory-made wrought steel butt-welding fittings. |
ANSI B16.11 | Forged steel fittings socket-welding and threaded. Socket Welding and Threaded Forged Fittings |
ANSI B16.25 | Butt-welding ends. |
MSS SP43 | Wrought stainless steel butt-welding fittings. Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications |
BS21 | Threading. |
ISO 4144 | Stainless steel fittings threaded to ISO 7-1. |
MSS SP-95 | Swage(d) Nipples and Bull Plugs |
BS3799 | Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry |
ANSI – B 16.9 ASTM A403 – ASME SA403 | ‘Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings’ |
API 590-605 ASME B16.9 | ‘Factory-Made Wrought Buttwelding Fittings’ |
ASME B16.25 | ‘Buttwelding Ends’ |
ASME B16.28 | ‘Wrought Steel Buttwelding Short Radius Elbows and Returns’ |
A403 Stainless Steel Elbow
A403 Stainless Steel Elbow manufacturers in India
Elbows are made of 304/316 Stainless Steel seamless tubes within the diameter range of DN 15 – DN 1000. Elbows are produced according to the following standards:
- DIN 2605-1, steel grades: St. 37.0, St. 35.8, St. 45.8
- EN 10253-1, steel grade: S235
- EN 10253-2, steel gades: P235GH TC1, P265GH TC1
- EN 10253-2, steel grades: L360NB/P355NH TC2/P355NL1 TC2
We can also provide elbows with seam within the range of DN 200 – DN 1000.
Stainless Steel Elbow; ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
A403 Stainless Steel Tee
A403 Stainless Steel Tee manufacturers in India
Steel tees are available within the range of DN 15 – DN 600. They are produced according to the following standards:
- DIN 2615-1, steel grade St.35
-
EN 10253-2, steel grade P235GH
We can provide both A403 Stainless Steel equal and A403 Stainless Steel reducing tees. - Stainless Steel Tee; ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
A403 Stainless Steel Reducers
A403 Stainless Steel Reducers manufacturers in India
304/316 stainless steel reducers are made of 304/316 Stainless Steel seamless tube within the range of DN 15 – DN 1000.
We can provide both A403 Stainless Steel concentric and A403 Stainless Steel eccentric reducers.
Steel reducers are produced according to the following standard:
DIN 2616-2, steel grades St. 37.0, St. 35.8, St. 45.8
- Stainless Steel Reducer:ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
A403 Stainless Steel Pipe Cap/ End Cap
A403 Stainless Steel Pipe Cap/ End Cap manufacturers in India
Steel heads/ Pipe Cap are available within the range of DN 15 – DN 500.
They are produced according to the following standards:
- PN-64/M-35411, steel grade S235JR+N
- EN 10253-1, steel grade S235
304/316 Seamless buttwelding fittings – ASTM A403M* & ASME B16.9
A403 WP304/316 Pipe Fittings: elbow dimensions, ASTM A403 fitting dimensions, Stainless steel pipe fittings dimensions, Stainless steel pipe fittings weight chart
Important Information for ASTM A403 Stainless Steel Pipe Fittings buyers
ASTM A403 WP304/316 Stainless Steel Elbows and Returns
Nominal Pipe Size (inches) | Outside Diameter (mm) | Outside Diameter (inches) | 90° Elbows (Long Radius) | 90° Elbows (Short Radius) | 45° Elbows (Long Radius) | 45° Elbows (Long Radius) | 180° Returns (Long Radius) | 180° Returns (Long Radius) |
Center to Face (inches) | Center to Face (inches) | Center to Face (inches) | Radius (inches) | Center to Center (inches) | Back to face (inches) | |||
1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
11/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
11/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
21/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
31/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
ASTM A403 WP304/316 Stainless Steel Tees, Caps, Stub Ends and Straight Crosses
Nominal Pipe Size (inches) | Outside Diameter (mm) | Outside Diameter (inches) | Caps (inches) | Straight Tees (inches) | Straight Crosses (inches) | Stub Ends (inches) | Stub Ends (inches) | Stub Ends (inches) |
Length | Center to End | Center to End | Lap Diameter | Long Length | Short Length | |||
1/2 | 21.3 | 0.840 | 1 | 1 | – | 1 3/8 | 3 | 2 |
3/4 | 26.7 | 1.050 | 1 | 1 1/8 | – | 1 11/16 | 3 | 2 |
1 | 33.4 | 1.315 | 1 1/2 | 1 1/2 | 1 1/2 | 2 | 4 | 2 |
1 1/4 | 42.2 | 1.660 | 1 1/2 | 1 7/8 | 1 7/8 | 2 1/2 | 4 | 2 |
1 1/2 | 48.3 | 1.900 | 1 1/2 | 2 1/4 | 2 1/4 | 2 7/8 | 4 | 2 |
2 | 60.3 | 2.375 | 1 1/2 | 2 1/2 | 2 1/2 | 3 5/8 | 6 | 2 1/2 |
2 1/2 | 73.0 | 2.875 | 1 1/2 | 3 | 3 | 4 1/8 | 6 | 2 1/2 |
3 | 88.9 | 3.500 | 2 | 3 3/8 | 3 3/8 | 5 | 6 | 2 1/2 |
3 1/2 | 101.6 | 4.000 | 2 1/2 | 3 3/4 | 3 3/4 | 5 1/2 | 6 | 3 |
4 | 114.3 | 4.500 | 2 1/2 | 4 1/8 | 4 1/8 | 6 3/16 | 6 | 3 |
5 | 141.3 | 5.563 | 3 | 4 7/8 | 4 7/8 | 7 5/16 | 8 | 3 |
6 | 168.3 | 6.625 | 3 1/2 | 5 5/8 | 5 5/8 | 8 1/2 | 8 | 3 1/2 |
8 | 219.1 | 8.625 | 4 | 7 | 7 | 10 5/8 | 8 | 4 |
10 | 273.1 | 10.750 | 5 | 8 1/2 | 8 1/2 | 12 3/4 | 10 | 5 |
12 | 323.9 | 12.750 | 6 | 10 | 10 | 15 | 10 | 6 |
ASTM A403 WP304/316 Stainless Steel Reducers
Nominal Pipe Size | Outside Diameter | Outside Diameter | Reducers | Reducers |
Reduced from (inches) | (mm) | (inches) | Reduced to (inches) | Concentric & Eccentric Length (inches) |
1/2 | 21.3 | 0.840 | 1/4 3/8 | 1 1/2 1 1/2 |
3/4 | 26.7 | 1.050 | 3/8 1/2 | 2 2 |
1 | 33.4 | 1.315 | 3/8 1/2 3/4 | 2 2 2 |
1 1/4 | 42.2 | 1.660 | 1/2 3/4 1 | 2 2 2 |
1 1/2 | 48.3 | 1.900 | 1/2 3/4 1 1 1/4 | 2 1/2 2 1/2 2 1/2 2 1/2 |
2 | 60.3 | 2.375 | 3/4 1 1 1/4 1 1/2 | 3 3 3 3 |
2 1/2 | 73.0 | 2.875 | 1 1 1/4 1 1/2 2 | 3 1/2 3 1/2 3 1/2 3 1/2 |
3 | 88.9 | 3.500 | 1 1 1/2 2 2 1/2 | 3 1/2 3 1/2 3 1/2 3 1/2 |
3 1/2 | 101.6 | 4.000 | 1 1/4 1 1/2 2 2 1/2 3 | 4 4 4 4 |
4 | 114.3 | 4.500 | 1 1/2 2 2 1/2 3 3 1/2 | 4 4 4 4 |
5 | 141.3 | 5.563 | 2 2 1/2 3 3 1/2 4 | 5 5 5 5 5 |
6 | 168.3 | 6.625 | 2 1/2 3 3 1/2 4 5 | 5 1/2 5 1/2 5 1/2 5 1/2 5 1/2 |
8 | 219.1 | 8.625 | 3 3 1/2 4 5 6 | 6 6 6 6 6 |
10 | 273.1 | 10.750 | 4 5 6 8 | 7 7 7 7 |
12 | 323.9 | 12.750 | 5 6 8 10 | 8 8 8 8 |
ASTM A403 Stainless Steel Pipe Fittings Chemical Composition
SS | 304 | 304N | 304LN |
Ni | 8 – 11 | 8 – 11 | 8 – 11 |
Fe | Balance | Balance | Balance |
Cr | 18 – 20 | 18 – 20 | 18 – 20 |
C | 0.08 max | 0.08 max | 0.035 max |
Si | 0.75 max | 0.75 max | 0.75 max |
Mn | 2 max | 2 max | 2 max |
P | 0.040 max | 0.040 max | 0.040 max |
S | 0.030 max | 0.030 max | 0.030 max |
N | 0.10 – 0.16 | 0.10 – 0.16 |
ASTM A403 Stainless Steel Pipe Fittings Mechanical Properties
Density | 8.0 g/cm3 |
Melting Point | 1400 °C (2550 °F) |
Tensile Strength | Psi – 75000 , MPa – 515 |
Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
Elongation | 35 % |