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ASTM A269

Austenitic Stainless Steel Seamless Welded Tube.

ASTM A269 Standards And Specifications

The ASTM A269 covers Stainless Steel Seamless and Welded Tube. These are austenitic steel tube which provides good formability and weldability.

ASTM A269- Seamless and Welded Tube

ASTM A269 Stainless Steel Seamless Welded Tube

ASTM A269 is a standard specification for seamless and welded tube. These seamless tube is manufactured with billets whereas the welded tubes are produced from cold rolled or hot rolled. The tube size usually produce with these specification are 6.4mm with inside diameter and nominal thickness of 0.51mm.

Scope And Manufacturing

ASTM A269 specification covers Seamless and Welded Tube of Stainless Steel. Seamless tubes are generally made in multiple steps starting with hot extrusion to form the tube hollows from billets. The extrusion billet has a drilled hole and is pushed through a die and over a mandrel followed by air cooling or water quenching. The ID of the extrusion die determines the OD of the extruded tube and the OD of the piercing die determines the ID. The gap between the piercing die and the extrusion die defines the tube wall thickness. The wall thickness uniformity (concentricity) is difficult to control and it is difficult to achieve good surface quality. The surface of the extrusion billet is initially machined in order to remove any surface defects that otherwise would have a negative effect on the surface quality of the finished product. Further reduction of the tube hollows down to the required tubing sizes is done cold using pilgering to final finish and size of the tubes. Cold work improves the mechanical properties and tolerances. Cold pilgering is the preferred production process since this technique provides a high forming rate, narrow tolerances and good productivity yields, but cold drawing gives narrower tolerance ranges and better surface quality. In general both seamless and welded tube receive some type of finishing treatment and heat treatment after completion of the manufacturing process.

Siddhagiri Metals and Tubes is a stockist of 254 SMO Welded Tube, 330 Stainless Steel Seamless Tube, 321 Stainless Steel Welded Tube, 321h Stainless Steel Seamless Tube, 347 Stainless Steel Welded Tube, 347h Stainless Steel Welded Tube, 904l Stainless Steel Seamless Tube. These welded tubes are used in liquid natural gas piping, offshore construction, food and pharmaceutical processing, desalination and wastewater projects.


ASTM A269 specification is for Stainless Steel Seamless and Welded Tube. These tube have high strength which makes them ideally suitable for pressure applications within the oil & gas, petrochemical, chemical, energy, pulp & paper industries, etc.
Other Names : ASTM A269 TP304, ASTM A269 TP304h, ASTM A269 TP309, ASTM A269 TP310s, ASTM A269 TP316l, ASTM A269 TP316h, ASTM A269 TP316ti, ASTM A269 TP317l, ASTM A269 TP330, ASTM A269 TP321, ASTM A269 TP321h, ASTM A269 TP347, ASTM A269 TP347h, ASTM A269 TP904l, ASTM A269 UNS S31254, ASTM A269 UNS S30400, ASTM A269 UNS S30403, ASTM A269 UNS S30409, ASTM A269 UNS S30900, ASTM A269 UNS S31000, ASTM A269 UNS S31008, ASTM A269 UNS S31603, ASTM A269 UNS S31609, ASTM A269 UNS S31635, ASTM A269 UNS S31703, ASTM A269 UNS N08330, ASTM A269 UNS S32100, ASTM A269 UNS S32109, ASTM A269 UNS S34700, ASTM A269 UNS S34709, ASTM A269 UNS N08904
Material : Stainless Steel, SMO 254
Brand : Siddhagiri Metals and Tubes
Manufacturer : Siddhagiri Metals and Tubes
Rating : 4.8/5 based on 80 customer reviews

Our Inventory of ASTM A269 Material

  • ASTM A269 UNS S31254
  • ASTM A269 TP304
  • ASTM A269 ASTM A269
  • ASTM A269 UNS S30403
  • ASTM A269 TP304
  • ASTM A269 UNS S30403
  • ASTM A269 TP304h
  • ASTM A269 UNS S30409
  • ASTM A269 TP309
  • ASTM A269 UNS S30900
  • ASTM A269 TP309
  • ASTM A269 UNS S30900
  • ASTM A269 TP310s
  • ASTM A269 UNS S31000
  • ASTM A269 TP310s
  • ASTM A269 UNS S31008
  • ASTM A269 TP310s
  • ASTM A269 UNS S31000
  • ASTM A269 UNS S31008
  • ASTM A269 TP316l
  • ASTM A269 UNS S31603
  • ASTM A269 TP316l
  • ASTM A269 UNS S31603
  • ASTM A269 TP316h
  • ASTM A269 UNS S31609
  • ASTM A269 TP316h
  • ASTM A269 UNS S31609
  • ASTM A269 TP316ti
  • ASTM A269 UNS S31635
  • ASTM A269 TP316ti
  • ASTM A269 UNS S31635
  • ASTM A269 TP317l
  • ASTM A269 UNS S31703
  • ASTM A269 TP317l
  • ASTM A269 UNS S31703
  • ASTM A269 TP330
  • ASTM A269 UNS N08330
  • ASTM A269 TP330
  • ASTM A269 UNS N08330
  • ASTM A269 TP321
  • ASTM A269 UNS S32100
  • ASTM A269 TP321
  • ASTM A269 UNS S32100
  • ASTM A269 TP321h
  • ASTM A269 UNS S32109
  • ASTM A269 TP321h
  • ASTM A269 UNS S32109
  • ASTM A269 TP347
  • ASTM A269 UNS S34700
  • ASTM A269 TP347
  • ASTM A269 UNS S34700
  • ASTM A269 TP347h
  • ASTM A269 UNS S34709
  • ASTM A269 TP347h
  • ASTM A269 UNS S34709
  • ASTM A269 UNS N08904
  • ASTM A269 TP904l
  • ASTM A269 UNS N08904
  • ASTM A269 TP904l