ASTM A269 Stainless Steel Tube Suppliers

ASTM A269 Seamless Welded Tube / Tubing

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. Seamless tubes are generally made in multiple steps starting with hot extrusion to form the tube hollows from billets. In general both seamless and welded tube receive some type of finishing treatment and heat treatment after completion of the manufacturing process.

Scope And Manufacturing

ASTM A269 specification covers Seamless and Welded Tube of Stainless Steel. 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.

Mumbadevi Steel India (MSI) offers ASTM A269 in standards such as astm a269 f44 tube, astm a269 f304 tube, astm a269 f304l tube, astm a269 f304h tube, astm a269 f309 tube, astm a269 f310 tube, astm a269 f310s tube, astm a269 f316h tube, astm a269 f316l tube, astm a269 f316ti tube, astm a269 f317l tube, astm a269 f321 tube, astm a269 f321h tube, astm a269 f330 tube, astm a269 f347 tube, astm a269 f347h tube, astm a269 f904l tube, astm a269 f51 tube, astm a269 f60 tube, astm a269 f53 tube, astm a269 f55 tube, astm a269 uns s31254 tube, astm a269 uns s30400 tube, astm a269 uns s30403 tube, astm a269 uns s30409 tube, astm a269 uns s30900 tube, astm a269 uns s31000 tube, astm a269 uns s31008 tube, astm a269 uns s31609 tube, astm a269 uns s31603 tube, astm a269 uns s31635 tube, astm a269 uns s31703 tube, astm a269 uns s32100 tube, astm a269 uns s32109 tube, astm a269 uns n08330 tube, astm a269 uns s34700 tube, astm a269 uns s34709 tube, astm a269 uns n08904 tube, astm a269 uns s31803 tube, astm a269 uns s32205 tube, astm a269 uns s32750 tube, astm a269 uns s32760 tube.