ASTM A312 Seamless Stainless Steel Pipe,ASTM A312 Seamless Stainless Steel Pipe

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ASTM A312 Seamless Stainless Steel Pipe

Date:2023-06-13View:501Tags:astm a312 seamless stainless steel pipe,astm a312 stainless steel pipe,astm a312 seamless pipe,a312 stainless steel pipe,a312 ss pipe
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ASTM A312 seamless pipe is austenitic stainless steel pipe applied for high temperature and general corrosive service, which covers diameters from 1/8” to 30” and thickness from SCH 10S to SCH 80S.


ASTM A312 Seamless Stainless Steel Pipe Size Tolerances:

1. A312 Stainless Steel Pipe WT Tolerance

Tolerance, % from Nominal

NPS Designator

Over (+)

Under (-)

1/8 to 21/2 incl.,all t/D ratios

20.0

12.5

3 to 18 incl.,t/D up to 5% incl.

22.5

12.5

3 to 18 incl. t/D > 5%

15.0

12.5

20 and larger,welded all t/D ratios

17.5

12.5

20 and larger, seamless t/D up to 5% incl.

22.5

12.5

20 and larger, seamless t/D >5 %

15.0

12.5

Ps:t = Nominal Wall Thickness,D = Ordered Outside Diameter


2. A312 Stainless Steel Pipe OD Tolerance

NPS

ASTM A312 OD Tolerance

+

–

inch

mm

inch

mm

1/8~1 1 /2
> 1 1 /2~4
> 4~8
> 8~18
> 18~26
> 26~34
> 34~48

1/64(0.015)
1/32(0.031)
1/16(0.062)
3/32(0.093)
1/8(0.125)
5/32(0.156)
3/16(0.187)

0.4
0.8
1.6
2.4
3.2
4.0
4.8

1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)
1/32(0.031)

0.8
0.8
0.8
0.8
0.8
0.8
0.8


3. Length Tolerance

- The length range is from 15 to 24ft, and all size from NPS 1/8 to NPS 8 are available unless otherwise specified.

- Cut to length should be specified in the order. The length of pipe shall not be longer than the specified length and shall not exceed 1/4 inch (6mm).

- Joints are not allowed to have unless otherwise specified.


Tests of A312 SS Pipe:

- Transverse or Longitudinal Tension Test

- Flatten Test

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