Stainless Steel Buttweld Fittings manufacturers in India
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A403 304 Stainless Steel Fittings, 304 Stainless Steel Buttweld 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.
We are the first company in India, manufacturing Stainless Steel Buttweld Fittings in high size by using German technology.
Table of Content
What is Stainless Steel Buttweld Fittings?
A403 304 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 Stainless Steel Buttweld 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.
Stainless Steel Buttweld Fittings manufacturers in India
A piping system using ASTM A403 butt welding fittings has many inherent advantages over other forms.
- Welding a fitting to the pipe means that it is permanently leakproof.
- The continuous metal structure formed between pipe and fitting adds strength to the system.
- Smooth inner surface and gradual direction changes reduce pressure losses and turbulence and minimise the action of corrosion and erosion.
- A welded system utilises a minimum of space.
Stainless Steel Buttweld Fittings Specifications
Burkhard Steel Industries a range of Stainless Steel Buttweld fittings in 90º and 45º Elbows, Concentric and Eccentric Reducers, End caps, Stainless Steel Equal and Reducing Tees, Stub Ends and Weld On Collars.
Burkhard Steel Industries carry the full range of Buttweld fittings in both in grades 304L and 316L schedule 10s, 40s and 80s. Buttweld fittings are stocked in accordance to ASTM /ASME SA/A 403 WP –W (Welded), WP–S (Seamless) and WP- WX (Welded with X ray). All material is marked in accordance with the applicable standards and fully traceable to EN 10204 3.1 material certificates.
A403 304 Stainless Steel Buttweld Pipe Fittings Specification
A403 304 Stainless Steel Buttweld (B/W) Fittings Material | Size (in mm) | Sch. & Swg. | SS Fittings Specification | SS Buttweld Pipe Fittings Items |
A403 304 Stainless Steel Seamless Fittings | 15 NB to 300 NB | Sch. 5 to Sch. XXs | A-403 B/W ANSI B16.9 | A403 WP304 Bend (Long & Short) R=2D,3D,5D,10D Etc A403 WP304 Elbow ( 180o, 90o & 45o) A403 WP304 Tee (Equal & Unequal) |
A403 304 Stainless Steel Welded [ERW] Fittings | 15 NB to 600 NB | Sch. 5 to Sch. 80s | A-403 B/W ANSI B16.9 | A403 WP304 Reducer (Con & Ecc) CAP A403 WP304 Stubend (Long & Short) A403 WP304 Nipple (Barrel) |
ASTM A240 | DIN | EN 10088-2 | JIS4305 | C% Max | Si% Max | Mn% Max | Cr% | Ni% |
201 | SUS201 | 0.15 | 1.00 | 7.50 | 16.00-18.00 | 3.50-5.50 | ||
202 | SUS202 | 0.15 | 1.00 | 10.00 | 17.00-19.00 | 4.00-6.00 | ||
304 | 1.4301 | X5CrNi18-10 | SUS304 | 0.08 | 1.00 | 2.00 | 18.00-20.00 | 8.00-10.50 |
304L | 1.4306 | X2CrNi19-11 | SUS304L | 0.03 | 1.00 | 2.00 | 18.00-20.00 | 8.00-12.00 |
309S | 1.4833 | X12CrNi23-13 | SUS309S | 0.08 | 1.00 | 2.00 | 22.00-24.00 | 12.00-15.00 |
310S | 1.4845 | X8CrNi25-21 | SUS310S | 0.08 | 1.00 | 2.00 | 24.00-26.00 | 19.00-22.00 |
316 | 1.4401 | X5CrNiMo17-12-2 | SUS316 | 0.08 | 1.00 | 2.00 | 16.00-18.00 | 10.00-14.00 |
316L | 1.4435 | X2CrNiMo17-12-2 | SUS316L | 0.03 | 1.00 | 2.00 | 16.50-18.50 | 10.00-14.00 |
317 | 1.4449 | SUS317 | 0.08 | 1.00 | 2.00 | 18.00-20.00 | 11.00-15.00 | |
317L | 1.4438 | X2CrNiMo18-15-4 | SUS317L | 0.03 | 1.00 | 2.00 | 18.00-20.00 | 11.00-15.00 |
321 | 1.4541 | X6CrNiTi18-10 | SUS321 | 0.08 | 1.00 | 2.00 | 17.00-19.00 | 9.00-12.00 |
347 | 1.4550 | X6CrNiNb18-10 | SUS347 | 0.08 | 1.00 | 2.00 | 17.00-19.00 | 9.00-12.00 |
Technique: Cold drawn
Size: diameter 1mm-480mm, thickness 0.1mm-4mm, length 1000mm-12000mm
Application: Fluid transportation, machinery, automobile, bicycle, furniture, decoration, mechanical components and structure parts etc.
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 Stainless Steel Buttweld 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’ |
Types of Stainless Steel Buttweld Fittings
A403 304 Stainless Steel Elbow
A403 304 Stainless Steel Elbow manufacturers in India
Elbows are made of 304 Stainless Steel seamless tubes within the diameter range of DN 15 – DN 1000.
Elbows are produced according to the following standards:
- DIN 2605-1
- EN 10253-1
- EN 10253-2
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 304 Stainless Steel Tee
A403 304 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
- EN 10253-2
We can provide both A403 317L Stainless Steel equal and A403 317L Stainless Steel reducing tees.
Stainless Steel Tee: ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
A403 304 Stainless Steel Reducers
A403 304 Stainless Steel Reducers manufacturers in India
304 stainless steel reducers are made of 304 Stainless Steel seamless tube within the range of DN 15 – DN 1000.
We can provide both A403 304 Stainless Steel concentric and A403 304 Stainless Steel eccentric reducers.
Steel reducers are produced according to the following standard:
- DIN 2616-2
Stainless Steel Reducer:ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
A403 304 Stainless Steel Pipe Cap/ End Cap
A403 304 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
Stainless Steel Pipe Cap: ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
304 Seamless buttwelding fittings – ASTM A403M* & ASME B16.9
A403 WP304 Buttweld Pipe Fittings: elbow dimensions, ASTM A403 fitting dimensions, Stainless steel Buttweld Pipe Fittings dimensions, Stainless steel Buttweld Pipe Fittings weight chart
Important Information for Stainless Steel Buttweld Fittings buyers
ASTM A403 WP304 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 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 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 |
A403 WP304 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 |
A403 WP304 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 % |