Who is ASTM A312 TP304L Stainless steel welded pipes supplier?
We are A312 TP304L heavy thickness welded pipes manufactuer.

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We are ASTM A312 TP304L stainless steel welded pipe manufacturer and supplier.ASTM A312 TP304L Thick wall stainless steel welded pipe manufacturer in China.

A312 TP304L 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.

RYIN Stainless Welded pipe factory produce and export of stainless steel seamless and welded pipes per ASTM A312 in Grade of TP304L/304L, TP316/316L/316Ti, TP321/tp321H, TP SS347H, TP317L, TP904L TP309S/H TP310S/H and SS446 among other special grades. Stainless steel seamless tubes are available in compliance with ASTM A213 and ASTM A269 in common grades of such as 304/304L and 316/316L in standard tube sizes and wall thicknesses. We can offer custom size cold drawn stainless-steel pipes and stainless-steel tubes to our customers. Generally stainless-steel pipes and stainless-steel tubes are available in standard OD or NB sizes. However, with our tube processing capabilities we can offer any custom size outside DIA and thickness to our customers.

Stainless TP304L welded pipe production range:
OD12.7 to 2500mm, Thick:0.8mm-60mm, Length 500mm to 13000mm

 

A312 TP304L Welded pipe Chemical Composition

 

Grade

UNS Design

Composition, %

C

Mn

P

S

Si

Cr

Ni

Mb

Ti

Nb

N

Cu

Ce

B

Al

A312 TP304L

S30403

0.035

2

0.045

0.03

1

18.0–20

8.0–13

. . .

. . .

. . .

. . .

. . .

. . .

 

 

A312 TP304L Welded pipe Tensile Requirements

Grade	UNS Designation	Tensile Strength, Min. ksi [MPa]	Yield strength, min ksi [MPa]	other
TP304L	S30403	70 [485]	25 [170]

 

A312 TP304L Welded pipe Heat Treatment Requirements

Grade	UNS Designation	Finished	Heating Temperature	Cooling/testing Requirements
A312 Tp304l	S304, S30409	Cold	1900 °F [1040 °C]	See Spec
A312 TP304L	S304, S30409	Hot	1900 °F [1040 °C]	See Spec

 

 

A312 TP304L Welded pipe Elongation Requirements

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

 

 

Our TP304L 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 TP304L 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 TP304L, TP316H, 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)

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