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A312 TP309H Welded pipe Specification: ASTM A312 specification covers seamless pipe and welded pipe for austenitic stainless steel. These high performance austenitic stainless steels have a fully austenitic microstructure in the quench annealed condition.

We supply high quality ASTM A312 TP309H Seamless Pipe and ASTM A312 TP309H Stainless Steel Welded Pipe. All of pipes are sized, cut, and finished according to your exact specifications. TP309H pipes and tubing is available with OD from 12.7MM to 2500MM with wall thickness from 0.8MM to 60MM. We supply ASTM A312 TP 316 pipes after all quality parameters checks by experienced and good knowledge staff. We stock a wide range of industry standard sizes of ASTM A312 Seamless Stainless Steel Pipes.

Stainless TP309H welded pipe production range: astm a312 pipe dimensions

OD12.7 to 2500mm, Thick:0.8mm-60mm, Length 500mm to 13000mm

Adopt standard: ASTM A312, ASME SA312, ASTM A213, ASME SA213 and others.

A312 TP309H Welded pipe Chemical Composition

Grade

UNS
Design

Composition, %

A312 TP309H

S3099

0.04-0.08

0.045

0.03

22.0–24

12.0–15

. . .

A312 TP309H Welded pipe Tensile Requirements

Grade	UNS Designation	Tensile Strength, Min. ksi [MPa]	Yield strength, min ksi [MPa]	other
TP309H	S30908	75 [515]	30 [205]

A312 TP309H Welded pipe Heat Treatment Requirements

Grade	UNS Designation	Finished	Heating Temperature	Cooling/testing Requirements
TP309H	S30908		1900 °F [1040 °C]	See Spec

A312 TP309H Welded pipe Elongation Requirements

Elongation in 2 in., min, %		longitudinal	Transverse	Grain size
Longitudinal	Transverse
35	25	35	25	According to standard

Our TP309H Stainless Steel Welded pipe manufactured from cold-forming process using coils of steel sheet with automated spiral welds. Great strides were made in quality control, testing, joints and protective coatings. Welded steel pipe is available in wide ranges of sizes and properties of the steel. These ERW Pipes carry high strength, ease of installation, high flow capacity, leak resistance, long service life, reliability and versatility, and economy.

A312 TP309H Welded pipe ship marking:

Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer’s private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304N, TP309HH, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.

Referenced Documents:

ASTM Referenced Standards

A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels

A370 Test Methods and Definitions for Mechanical Testing of Steel Products

A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys

A999 A999M Specification for General Requirements for Alloy and Stainless-Steel Pipe

A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless-Steel Tubes

E112 Test Methods for Determining Average Grain Size

E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings

E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

For us quality always stands first, and we would provide 100% free replacement to our customer. At the same time, we also strive to ensure that our quality for cold drawn stainless steel pipes and tubes is the best in the industry. Our continuous focus on quality, price and service has helped us win many order from India, and overseas. We welcome you to contact us for best prices for ASTM A312 stainless steel pipes and tubes from our factory

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