ASTM A312 TP321 Stainless Steel Seamless Pipes Specification

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Update time : 2026-04-23 09:05:09

　　ASTM A312 TP321 Stainless Steel Seamless Pipes specification2 covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.

ASTM A312 TP321 Stainless Steel Seamless Pipes
Sr. No.	Material	Size	Sch.	Specification
1	Seamless Pipe	15 NB To 300 NB	Sch. 5s Sch. 10s Sch. 40s Sch. 80s Sch. 160s Sch. XXS	ASTM A 312
2	Welded (ERW) Pipe	15 NB To 300 NB	Sch. 5s Sch. 10 Sch. 40s & Sch. 80s	ASTM A 312
3	Welded (ERW) Pipe	150 NB To 600 NB	Sch. 5s Sch. 10s Sch. 40s & Sch. 80s	ASTM A 358

Grade	TP 304	TP 316H	TP 310	TP 410
	TP 304H	TP 316L	TP 317L	TP 420
	TP 304L	TP 316LN	TP 321	TP 430
	TP 304LN	TP TP 316Ti	TP 347	TP 446
	TP 316	TP 309	TP 409	TP 202 Etc.
Special Pipes	Fabricated Pipe (with radiography)
In Form of	Round ASTM A312 TP321 Stainless Steel Seamless Pipes	Oval ASTM A312 TP321 Stainless Steel Seamless Pipes	Shaft
	Square ASTM A312 TP321 Stainless Steel Seamless Pipes	Coil	‘U’ Shape
	Rectangle ASTM A312 TP321 Stainless Steel Seamless Pipes	Flexible Pipe	Hydraulic pipe etc.
In Length of	Standard & Cut length
Value Added Service	Draw & Expansion as per required Size & Length
	Polish (Electro & Commercial) Heat Treatment
	Bending
	Annealed & Pickled
	Sand Blasting
	Machining Etc.
Test Certificate	Manufacturer Test Certificate
	Laboratory Test Certificate from Govt. Approved Lab.
	Under Third Party Inspection
Specialize	Fabricated Pipe
	Square & Rectangle &
	Other Odd Size

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