ASTM A403 Stainless Steel Pipe Fittings

ASTM A403 stainless steel buttweld pipe fittings are supplied in a wide range of grades including WP304/304L/304H, 310/310S, 316/316L, 317/317L, 321, 347, and 904L, in accordance with standards such as ASME B16.9 and ASME B16.28. These fittings are available in both seamless and welded types, covering products like elbows, tees, reducers, stub ends, and pipe nipples. Manufactured to meet international specifications, they are suitable for various piping systems requiring corrosion resistance, strength, and dimensional accuracy across industrial applications.

ASTM A403 Stainless Steel Buttweld Pipe Fittings Supplier, SS Pipe Fittings Exporter in India – ASTM A403 / ASME SA403

Reliable source for stainless steel buttweld fitting requirements.
Supply of austenitic stainless steel pipe fittings in seamless and welded types, including large diameter fittings
Stainless Steel Buttweld Pipe Fittings

ASTM A403 Austenitic Stainless Steel Pipe Fittings

ASTM A403 Stainless Steel Pipe Fittings cover wrought austenitic stainless steel fittings used for pressure piping applications. These fittings are manufactured from stainless steel bars, forgings, plates, or seamless and welded tubular products, and are processed through methods such as rolling, forging, pressing, machining, and bending. Heat treatment and chemical analysis are carried out to ensure the material meets the required composition and specification standards.

Advantages
ASTM A403 stainless steel pipe fittings provide reliable performance in piping systems. Welded fittings offer leak-tight joints and help optimize space utilization. The smooth internal surface allows better flow characteristics, reducing turbulence, pressure loss, and the risk of erosion or corrosion. The continuity between pipe and fitting also contributes to overall system strength and durability.

ASTM A403 Stainless Steel Pipe Fittings are available in both seamless and welded constructions, in accordance with standards such as ASME B16.9, ASTM A403, and ASTM A815 for duplex grades where applicable. Sizes typically range from ½” to 48”, with various wall thicknesses including higher schedules. Additional services such as polishing, heat treatment, machining, and surface finishing can be provided as per project requirements. All fittings are supplied with inspection and test certification to ensure compliance and quality.

ASTM A403 Stainless Steel Buttweld Pipe Fittings – Elbows, Tees, Reducers, Stub Ends & End Caps Supplier, WP304/304L/304H, WP316/316L/316H, WP321/321H, WP904L Fittings Manufacturer, ASME B16.9 / B16.28 SS Pipe Fittings Exporter in India.


Standard Specification for ASTM A403 Stainless Steel Pipe Fittings

Specification ASTM A403 / ASME SA403
Dimensions ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size Seamless 1/2" - 10", Welded 1/2" - 48"
Type Seamless / Welded / Fabricated
Thickness Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Pipe Fittings Forms Long Radius (LR) Elbow, Short Radius (SR) Elbow, 2D Elbow, 3D Elbow, 5D Elbow, 10D Elbow, Equal Cross, Unequal Crosses, Reducing Nipple, Butt Tee Fittings, Bend, Swedge Nipple, Pipe Nipple, Reducers, Caps, Stub End, Pipe / Piggable Bend, Elbow, 45 and 90° elbows, 180° bends, lap-joint stub ends
Grades 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC.

EN-standard
Steel no. k.h.s DIN
EN-standard
Steel name
SAE grade UNS
1.4109 X65CrMo14 440A S44002
1.4112 X90CrMoV18 440B S44003
1.4125 X105CrMo17 440C S44004
440F S44020
1.4016 X6Cr17 430 S43000
1.4408 G-X 6 CrNiMo 18-10 316 S31600
1.4512 X6CrTi12 409 S40900
410 S41000
1.4310 X10CrNi18-8 301 S30100
1.4318 X2CrNiN18-7 301LN
1.4307 X2CrNi18-9 304L S3043
1.4306 X2CrNi19-11 304L S30403
1.4311 X2CrNiN18-10 304LN S30453
1.4301 X5CrNi18-10 304 S30400
1.4948 X6CrNi18-11 304H S30409
1.4303 X5CrNi18-12 305 S30500
X5CrNi30-9 312
1.4841 X22CrNi2520 310 S31000
1.4845 X 5 CrNi 2520 310S S31008
1.4541 X6CrNiTi18-10 321 S32100
1.4878 X12CrNiTi18-9 321H S32109
1.4404 X2CrNiMo17-12-2 316L S31603
1.4401 X5CrNiMo17-12-2 316 S31600
1.4406 X2CrNiMoN17-12-2 316LN S31653
1.4432 X2CrNiMo17-12-3 316L S31603
1.4435 X2CrNiMo18-14-3 316L S31603
1.4436 X3CrNiMo17-13-3 316 S31600
1.4571 X6CrNiMoTi17-12-2 316Ti S31635
1.4429 X2CrNiMoN17-13-3 316LN S31653
1.4438 X2CrNiMo18-15-4 317L S31703
1.4362 X2CrNi23-4 2304 S32304
1.4462 X2CrNiMoN22-5-3 2205 S31803/S32205
1.4501 X2CrNiMoCuWN25-7-4 J405 S32760
1.4539 X1NiCrMoCu25-20-5 904L N08904
1.4529 X1NiCrMoCuN25-20-7 N08926
1.4547 X1CrNiMoCuN20-18-7 254SMO S31254
Grade UNS No. EN No. C Cr Ni Mo Others
304 S30400 1.4301 0.08 18.00- 20.00 8.00- 12.00 - -
304L S30403 1.4307 0.035 18.00- 20.00 8.00- 12.00 - -
310S S31008 1.4845 0.08 24.00- 26.00 19.00- 22.00  - -
316 S31620 1.4401 0.08 16.00- 18.00 10.00- 14.00 2.00- 3.00 -
316L S31603 1.4404 0.035 16.00- 18.00 10.00- 14.00 2.00- 3.00 -
316H S31603 - 0.04- 0.10 16.00- 18.00 10.00- 14.00 2.00- 3.00 -
316Ti S31635 1.4571 0.08 16.00- 18.00 10.00- 14.00 2.00- 3.00 Ti:5X(C+N)- 0.70
317L S31703 1.4438 0.035 18.00 - 20.00 11.00- 15.00 3.00 - 4.00 -
321 S32100 1.4541 0.08 17.00 - 19.00 9.00 - 12.00 - Ti:5X(C+N)- 0.70
347 S34700 1.4550 0.08 16.00 - 18.00 10.00 - 14.00  - -
347H S34709 1.4551 0.04 - 0.10 17.00 - 20.00 9.00- 13.00 - -
904L S8904 1.4539 0.02 19.00- 23.00 23.00 - 28.00  - N:0.10 max
Cu : 1.0 - 2.0
Element Value
Tensile Strength 600
Yield Strength 250

 

Stainless Steel Pipe Fittings Application

ASTM A403 stainless steel buttweld pipe fittings are widely used in piping systems where strength, corrosion resistance, and long-term reliability are required. Manufactured as per international standards, these fittings are suitable for a variety of service conditions, including high pressure and temperature environments. They are commonly used across multiple industries for fluid handling and process piping applications. Typical application areas include:

  • ASTM A403 Stainless Steel Pipe Fittings uses in Power Plants
  • ASTM A403 Stainless Steel Pipe Fittings uses in Modern Architecture
  • ASTM A403 Stainless Steel Pipe Fittings uses in Petroleum Industry
  • ASTM A403 Steel Pipe Fittings uses in General Purpose Applications
  • ASTM A403 Stainless Steel Pipe Fittings uses in Fabrication Industry
  • ASTM A403 Stainless Steel Pipe Fittings uses in Oil & Gas Industry
  • ASTM A403 Stainless Steel Pipe Fittings uses in Fertilizers
  • ASTM A403 Stainless Steel Pipe Fittings uses in Electronics
  • ASTM A403 Stainless Steel Pipe Fittings uses in Construction
  • ASTM A403 Stainless Steel Pipe Fittings uses in Chemical Industries
  • ASTM A403 Stainless Steel Pipe Fittings uses in Plumbing
Stainless Steel Pipe Fittings Application

Stainless Steel ANSI B16.9, ASME B16.28 Fittings Price List

Export Destinations For Stainless Steel Pipe Fittings

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