Project Description

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

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

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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.

GradeSpecification
Stainless 304/304L, 304/304HASTM A312/SA312
Stainless 309SASTM A312/SA312
Stainless 310SASTM A312/SA312
Stainless 316/316L, 316/316HASTM A312/SA312
Stainless 317/317LASTM A312/SA312
Stainless 321/321HASTM A312/SA312
Stainless 347/347HASTM A312/SA312

Welded stainless steel pipe

Size: 1/8” to 36” (10.3mm to 914mm).

Schedules:

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

Click to download the details of ASTM A312 Stainless Steel Pipes.

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Wall Thickness: 1mm to 12.7mm.

GradeSpecification
Stainless 304/304L, 304/304HA/SA312
Stainless 316/316L. 316/316HA/SA312
Stainless 317/317LA/SA312
Stainless 321/321HA/SA312
Stainless 347/347HA/SA312

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:

GradeUNS
Design
Composition, %
CMnPSSiCrNiMbTiNbNCuCeBAl
TP304S304000.0820.0450.03118.0–208.0–11. . .. . .. . .. . .. . .. . .
TP304LS304030.03520.0450.03118.0–208.0–13. . .. . .. . .. . .. . .. . .
TP304HS304090.04 – 0.120.0450.03118.0–208.0–11. . .. . .. . .. . .. . .. . .
TP310SS310080.0820.0450.03124.0- 2619.0- 220.8. . .. . .. . .. . .. . .
TP310HS310090.04 – 0.120.0450.03124.0–2619.0–22. . .. . .. . .. . .. . .
TP310HS310350.04 – 0.10.60.0250.0150.421.5–23.523.5–26.5. . .. . .0.40- 0.60.20- 0.32.5- 3.5. . .0.002- 0.008
TP316S316000.0820.0450.03116.0–1810.0–142.00–3. . .. . .. . .. . .. . .
TP316LS316030.03520.0450.03116.0–1810.0–142.00–3. . .. . .. . .. . .. . .
TP316HS316090.04 – 0.120.0450.03116.0–1810.0–142.00–3. . .. . .. . .. . .. . .
TP317S317000.0820.0450.03118.0–2011.0–153.0–4. . .. . .. . .. . .. . .
TP317LS317030.03520.0450.03118.0–2011.0–153.0–4. . .. . .. . .. . .. . .
TP321S321000.0820.0450.03117.0–199.0–12. . .Ti 5 × (C+N) min, 0.70 max. . .0.1. . .. . .
TP321HS321090.04 – 0.120.0450.03117.0–199.0–12. . .4(C+N) min; 0.70 max. . .0.1. . .. . .
TP321HS326540.022.0-40.030.0050.524.0–2521.0–237.0-8. . .. . .0.45- 0.550.30-0.6. . .
TP321HS332280.04 – 0.0810.020.0150.326.0–2831.0–33. . .. . .0.60- 1. . .. . .0.05 – 0.10.025
TP321HS345650.035.0-70.030.01123.0–2516.0–184.0-5. . .0.10.40- 0.6. . .. . .
TP347S347000.0820.0450.03117.0–199.0–13. . .. . .See Spec. . .. . .. . .
TP347HS347090.04 – 0.120.0450.03117.0–199.0–13. . .. . .See Spec. . .. . .. . .
Alloy 20N080200.0720.0450.035119.0–2132.0–382.0–3. . .See Spec. . .3.0– 4. . .. . .. . .
Alloy 20N083670.0320.040.03120.0–2223.5–25.56.0–7. . .. . .0.18–0.250.75. . .. . .. . .
Alloy 20N080280.032.50.030.03126.0–2830.0–343.0–40.60–1.4
Alloy 20N080290.0220.0250.0150.626.0–2830.0–344.0–50.6– 1.4

Heat Treatment Requirements

GradeUNS
Designation
FinishedHeating TemperatureCooling/testing Requirements
TP304HS30409, S30415Cold1900 °F [1040 °C]See Spec
TP304HS30409, S30415Hot1900 °F [1040 °C]See Spec
TP310HS310091900 °F [1040 °C]See Spec
TP310HS310352160—2280 °F [1180—1250 °C]See Spec
TP316HS31609Cold1900 °F [1040 °C]See Spec
TP316HS31610Hot1900 °F [1040 °C]See Spec
TP321HS32109, S32615Cold2000 °F [1100 °C]See Spec
TP321HS32109, S32615Hot1925 °F [1050 °C]See Spec
TP321HS326542100 °F [1150 °C]See Spec
TP321HS332282050—2160 °F [1120—1180 °C]See Spec
TP321HS345652050—2140 °F [1120—1170 °C]See Spec
TP347HS34709Cold2000 °F [1100 °C]See Spec
TP347HS34709Hot1925 °F [1050 °C]See Spec
Alloy 20N080201700—1850 °F [925—1010 °C]See Spec
Alloy 20N083672025 °F [1110 °C]See Spec
Alloy 20N080282000 °F [1100 °C]See Spec
Alloy 20N080292000 °F [1100 °C]See Spec

Tensile Requirements

GradeUNS
Designation
Tensile Strength, Min. ksi [MPa]Yield strength, min ksi [MPa]other
TP304S3040075 [515]30 [205]
TP304LS3040370 [485]25 [170]
TP304HS3040975 [515]30 [205]
TP304HS3041587 [600]42 [290]
TP310SS3100875 [515]30 [205]
TP310HS3100975 [515]30 [205]
TP310HS3103595 [655]45 [310]
TP316S3160075 [515]30 [205]
TP316LS3160370 [485]25 [170]
TP316HS3160975 [515]30 [205]
TP316HS3163575 [515]30 [205]
TP317S3170075 [515]30 [205]
TP317LS3170375 [515]30 [205]
TP317LS3172575 [515]30 [205]
TP317LS3172680 [550]35 [240]
TP317LS3172780 [550]36 [245]
TP317LS3173070 [480]25 [175]
TP317LS3205393 [640]43 [295]
TP321S3210075 [515]30 [205]welded & seamless
TP321S3210075 [515]30 [205]t = 0.375 in.
TP321S3210070 [480]25 [170]t > 0.375 in.
TP321HS3210975 [515]30 [205]welded & seamless
TP321HS3210975 [515]30 [205]t = 0.375 in.
TP321HS3210970 [480]25 [170]t > 0.375 in.
TP321HS3261580 [550]32 [320]
TP321HS32654109 [750]62 [430]
TP321HS3322873 [500]27 [185]
TP321HS34565115 [795]60 [415]
TP347S3470075 [515]30 [205]
TP347HS3470975 [515]30 [205]
Alloy 20N0802080 [550]35 [240]
Alloy 20N0802873 [500]31 [214]
Alloy 20N0802973 [500]31 [214]
Alloy 20N08367100 [690]45 [310]t = 0.187 in.
Alloy 20N0836795 [655]45 [310]t > 0.187 in.

Elongation Requirements

Elongation in 2 in., min, %longitudinalTransverseGrain size
LongitudinalTransverse
35253525
35253525
352535257 or coarser
35253525
35253525
352535256 or coarser
352535257 or coarser
35253525
35253525
352535257 or coarser
35253525
35253525
35253525
35253525
35253525
35253525
35253525
35253525
35253525
35253525
35253525
352535257 or coarser
35253525
35253525
25253 or finer
35253525
35253525
35253525
35253525
352535257 or coarser
35253525
4040
4040
3030
3030

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.

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ASTM A312 PHOTOS

Stainless steel pipes ASTM A312 in the warehouse, ready for loading

Stainless Steel Pipes ASTM A312

ASTM A312 Stainless Steel Pipes

ASTM A312 Stainless Steel Pipes

Packing and Marking

Packed in bundles or ply wooden box wrapped in plastic, and suitably protected for sea-worthily delivery or as requested.

Packing photos:

ASTM A312 Stainless Steel Pipes Bundles

ASTM A312 Stainless Steel Pipes Bundles

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Tel.: +86 185 5109 0083 | E-mail: cts@ctstubes.com

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