ASTM A312 TP304, TP316, TP321, TP347 Stainless Pipes

ASTM A312 A312M TP304 TP304L TP316 TP316L Seamless, Welded Stainless Steel Pipes

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ASTM A312 A312M ASME SA312 TP304 TP304L TP316 TP316L is the standard including seamless and welded stainless pipes.

ASTM A312 A312M ASME SA312 Covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless-steel pipe intended for high-temperature and general corrosive service.

ASTM A312 A312M ASME SA312 Grades TP304, TP304L, TP304H, TP309S, TP309H, TP310S, TP310H,

TP316, TP316L, TP316H, TP317, TP317L, TP321, TP321H, TP347, TP347H, TP348, TP348H…

Standard: ASTM A312 A312M ASME SA312

Description Name:

ASTM A312 seamless stainless tube, ASTM A312 welded seamless stainless tubes, ASTM A312 seamless stainless pipes, ASTM A312 welded seamless stainless pipes, TP304 TP304L TP304H stainless pipes, TP309S TP309H stainless pipes, TP310S TP310H stainless pipes, TP316 TP316L stainless pipes. TP321 TP321H stainless pipe, TP347 TP347H stainless pipe, seamless stainless pipe, welded stainless pipe, seamless stainless tube, welded stainless tube, Seamless Stainless-Steel Pipe.

Size: 1/8” to 24” (10.3mm to 610mm).

Schedules:

10s, 20, 40s, 40, 60, 80s, 80, 100, 120, 140, 160, XXH.

Wall Thickness: 1mm to 60mm.

Welded stainless steel pipe

Size: 1/8” to 36” (10.3mm to 914mm).

Schedules:

5s, 10s, 20, 40s, 40, 60, 80s, 80.

Wall Thickness: 1mm to 12.7mm.

Shape: Round

Length: Single random length/ Double random length or as customer’s actual request

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)

Chemical Composition:

Heat Treatment Requirements

Tensile Requirements

Elongation Requirements

Flattening Test

For material heat treated in a continuous furnace flattening tests shall be made on a sufficient number of pipes to constitute 5 % of the lot, but in no case less than 2 lengths of pipe.

Hydrostatic or Nondestructive Testing.

Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test.

Markings

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 TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.

Note:

Mill test certificates will be issued according to EN10204.3.

All tubes shall be supplied as per applicable ASTM A312 /A312M Specification.