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ASTM A403

254 SMO and Stainless Steel Pipe Fittings

ASTM A403 Standards And Specifications

The ASTM A403 covers Austenitic Stainless Steel Pipe Fittings used in engineering industry, energy conversion plants, etc.

ASTM A403 - Pipe Fittings

ASTM A403 Pipe Fittings

ASTM A403 is a standard specification for steel pipe fittings. These pipe fittings have very good ductility, good weldability. These pipe fittings are manufactured in both seamless and welded forms such as elbow, tee, reducers, cap, bend, stub-end, collar, cross, etc.

Scope And Manufacturing

ASTM A403 specification covers stainless steel pipe fitting components used in pressure systems. These pipe fittings are manufactured in seamless and welded type. The material for fittings consist of seamless or welded piping products. Shaping operations is performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. The welding of pipe is done through shielded metal arc welding (SMAW), gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW). In GMAW process an inert gas such as argon, helium, carbon dioxide or a mixture of them are used to prevent atmospheric contamination of the weld. The shielding gas is allowed to flow through the weld gun. The electrode used here is, in a wire form, fed continuously at a fixed rate. The wire is consumed during the process and thereby provides filler metal.

Siddhagiri Metals and Tubes is well known global supplier of stainless steel. We offers Duplex Steel 2205, 254 SMO, 304l Stainless Steel, 304h Stainless Steel, 309 Stainless Steel, 310s Stainless Steel, and much more grades in best quality. Our company has been ruling the international market for past 30 years. We manufature our product under expertise and professionals guidance. Packaging of goods and exporting them to client in best condition is our top priority. We believe in customer satisfication.


ASTM A403 specification covers austenitic stainless steel pipe fittings. These austenitic steels give good resistant to stress corrosion cracking.
Other Names : ASTM A403 WP304, ASTM A403 WP304h, ASTM A403 WP309, ASTM A403 WP310s, ASTM A403 WP316l, ASTM A403 WP316h, ASTM A403 WP316ti, ASTM A403 WP317l, ASTM A403 WP330, ASTM A403 WP321, ASTM A403 WP321h, ASTM A403 WP347, ASTM A403 WP347h, ASTM A403 WP904l, ASTM A403 UNS S40354, ASTM A403 UNS S30400, ASTM A403 UNS S30403, ASTM A403 UNS S30409, ASTM A403 UNS S30900, ASTM A403 UNS S31000, ASTM A403 UNS S31008, ASTM A403 UNS S31603, ASTM A403 UNS S31609, ASTM A403 UNS S31635, ASTM A403 UNS S31703, ASTM A403 UNS N08330, ASTM A403 UNS S32100, ASTM A403 UNS S32109, ASTM A403 UNS S34700, ASTM A403 UNS S34709, ASTM A403 UNS N08904.
Material : 254 SMO, SS 304 , SS 304l, SS 309, SS 310 , SS 310s, SS 316l, SS 316ti, SS 317l, SS 330, SS 321, SS 347, SS 904l.
Brand : Siddhagiri Metals and Tubes
Manufacturer : Siddhagiri Metals and Tubes
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Our Inventory of ASTM A403 Material

  • ASTM A403 UNS S31254
  • ASTM A403 UNS S30400
  • ASTM A403 UNS S30403
  • ASTM A403 UNS S30409
  • ASTM A403 UNS S30900
  • ASTM A403 UNS S31000
  • ASTM A403 UNS S31008
  • ASTM A403 UNS S31603
  • ASTM A403 UNS S31609
  • ASTM A403 UNS S31635
  • ASTM A403 UNS S31703
  • ASTM A403 UNS N08330
  • ASTM A403 UNS S32100
  • ASTM A403 UNS S32109
  • ASTM A403 UNS S34700
  • ASTM A403 UNS S34709
  • ASTM A403 UNS N08904
  • ASTM A182 UNS N08904