Standard Specification

ASTM A312,A213,A249,A269,A270A789,A554,A790,etc.

Material

304,304L,309S,310S,316L,317L,321,,347,347H,2205 etc.

Outer Diameter

0.8mm to 6mm

Wall Thickness

0.25mm to 1mm

Length

As Required

Type                            

Round,Square Or Other

Delivery condition

Cold Rolled/Cold Drawn

This specification covers

Seamless,straight-seamless welded,

and heavily cold worked austenitic stainless steel pipe

Manufacture Process

Seamless (SML) Pipe

Diameter Tolerance

+/-1%

Permitted Variations In 

Wall Thickness

                     Tolerance,% from Nominal          

NPS Designator                                           Over      Under       

1/8 to 21/2 inc., all t/D ratios                          20         12.5

3 to 18 inc., t/D up to 5% incl.                        22.5      12.5

3 to 18 inc., t/D over 5%                                15          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 over 5%              15         12.5

  Where: t = Nominal Wall Thickness

         D = Ordered Outside Diameter

Inspection item

1. Size(outside,wall,length);
2. Surface of Pipe;
3. Chemical Composition; 
4. Mechanical Testing
5. Hydro-static Or Nondestructive Electric Test
6. ICT(Inter-granular Corrosion Test)  etc.

Ordering Information

• Quantity(feet,meters, or number of lengths)
• Steel Grade
• Size(outside diameter,nominal wall thickness,length)
• Test report requirements etc.