ASTM A312 / A312M, Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes, covering Austenitic stainless steels, and manufactured both welded and seamless type for option.

ASTM A312 stainless steel pipe is widely used for high temperature service and general service, pipe size from 1/8 inch to 30 inch for outside diameter, wall thickness from Schedule 5S to 80S.

Tianjin Bao Steel Pipe CO.,LTD is a professional and experienced steel pipe supplier and exporter, the largest distributor of TPCO, Baosteel Group and Angang Group, exporting more than 150,000 tons of steel pipes and fittings to more than 150 countries every year. We have a large stock of A312 steel pipes of various grades, which can be shipped promptly after you place an order. We also have perfect pipe deep processing capabilities, such as pipe 3PE coating, aluminizing, thermal expansion, U-shape processing, threading, slotting, finning, etc. If you need, welcome to inquire.

Specification

Technical data

Chemical Composition

Grade	Carbon	Silicon	Manganese	Chromium	Nickel	Molybdenum	Sulfur	Phosphorous
TP304	0,08	1,0	2.00	18.0 – 20.0	8.0 – 11.0	–	0,03	0,045
TP304L	0,035	1,0	2.00	18.0 – 20.0	8.0 – 13.0	–	0,03	0,045
TP316	0,08	1,0	2.00	16.0 – 18.0	10.0 – 14.0	2.00 – 3.00	0,03	0,045
TP316L	0,035	1,0	2.00	16.0 – 18.0	10.0 – 15.0	2.00 – 3.00	0,03	0,045
TP321	0,08	1,0	2.00	17.0 – 19.0	9.0 – 12.0	–	0,03	0,045

Mechanical Properties

Grade	UNS	Tensile Strength Min, Ksi [MPa]	Yield Strength Min, Ksi [MPa]
TP304	S30400	75 [515]	30 [205]
TP304L	S30403	70 [485]	25 [170]
TP304H	S30409	75 [515]	30 [205]
TP304N	S30451	80 [550]	35 [240]
TP304LN	S30453	75 [515]	30 [205]
TP309S	S30908	75 [515]	30 [205]
TP310S	S31008	75 [515]	30 [205]
TP316	S31600	75 [515]	30 [205]
TP316L	S31603	70 [485]	25 [170]
TP316H	S31609	75 [515]	30 [205]
TP316N	S31651	80 [550]	35 [240]
TP316LN	S31653	75 [515]	30 [205]
TP317	S31700	75 [515]	30 [205]
TP317L	S31703	75 [515]	30 [205]

FAQ

1.Q: Are you a factory or trading company?
A: We are professional manufacturer, and our company also is a very professional a trade company for steel products.We can provide a wide range of steel products.

2.Q:What do your factory do regarding quality control?
A: We have obtained ISO, CE and other certifications. From materials to products, we check every process to maintain good quality.

3.Q: Can I get samples before order ?
A: Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings.

4.Q:How do you make our business long-term and good relationship?
A:We keep good quality and competitive price to ensure our customers benefit ; We respect every customer as our friend and we sincerely do business and make friends with them.No matter where they come from.

5.Q:what is your delivery time ?
A: Our delivery time is about one week, timing according to the number of customers.

Consult our expert technicians today for professional solutions.

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Welded Pipe Application

Dec 27, 2022

Welded pipes are further divided into general welded pipes, galvanized welded pipes, oxygen blown welded pipes, electric wire casing, metric welded pipes, roller pipes, deep well pump pipes, automotive pipes, transformer pipes, electric welded thin-walled pipes, electric welded shaped pipes and spiral welded pipes according to their applications.