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ASTM A312 AISI304 304L 316L Seamless Stainless Annealed & Pickled

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ASTM A312 AISI304 304L 316L Seamless Stainless Annealed & Pickled

Surface Finished:

Annealed And Pickled - AP Finish

Outside Diameter:

219.1mm ( +/- 1% Tolerance )

Wall Thickness:

8.18mm ( +/- 10% Tolerance )

Length Of Pipe:

6100mm ( +/-5mm )

Highlight:

Stainless Steel Seamless Tube

, 

Stainless Steel Pipes And Tubes

 

AP Finished Seamless Stainless Steel Pipe ASTM A312 AISI304 304L 316L SS Pipe

 

Stainless Steel Seamless Pipe:

1.A999/A999M: Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test, the pipe of test to be used shall be at the option of the mfg, unless otherwise specified in the PO.
2. The Pipe lengths : Unless otherwise agreed upon, all size from NPS 1/8” TO AND INCLUDING nps 8 are available in a length up to 24ft with the permitted range of 15 to 24 ft. Short length are acceptable and the number and min, length shall be agreed upon between mfg and purchaser.
3. The finished pipe shall be reasonably straight and shall have workmanlike finish, Removal of imperfections by grinding is permitted, provided the W.T are not decreased to the less than the permitted in Section 9 of Specification A999/A999M
4. Butt Weld End: According to ANSI B 16.25
5. Pipe Marking: Specified in A999/999M, include “Logo+Standard+SIZE+Heat No.+Lot No.+H.T/E.T/U.T”
6. Packing: Each Pipe end is protected by Plastic cap. Then packed by Anti-rust steel strip, The outside of the bundle is plastic woven bag, or Plastic film.
7. Packing Mark: SIZE + STEEL GRADE+ QTY OF PIECE/WEIGHT/METRE.

 

Quick Detail:

 

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

6mm to 325mm

Wall Thickness

0.5mm to 25mm

Length

6m, 12m, 18m

Type                            

Round Pipe

 

 

Specifications

 

Designation: A312/A312M-04a

Standard specifications For Seamless,Welded,And Heavily Cold Worked Austenitic

Stainless Steel Pipe

 

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. 2.Surface of Pipe;
  3. Chemical Composition; 
  4. 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.

 

 Our annealed and pickled stainless steel pipes deliver superior performance for demanding industrial applications. Manufactured to ASTM A312 standards, these seamless tubes undergo precise thermal treatment to achieve optimal material properties. The ASTM A312 TP316L material offers exceptional corrosion resistance in aggressive environments. The comprehensive annealed and pickled process ensures scale-free surfaces and enhanced corrosion resistance. Available in grades 304, 304L and 316L, these pipes maintain excellent mechanical properties and structural integrity. The ASTM A312 TP316L specification guarantees consistent quality and reliable performance. Ideal for chemical processing, oil and gas, and food industry applications, these annealed and pickled pipes provide long-lasting service where corrosion resistance and hygiene are critical requirements. The seamless construction ensures superior pressure containment and flow characteristics.

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