Welded Precision Steel Tubes

Chemical Component of genernal steel grade.

E155,E195,E235,E275,E355, other materials upon agreement with customers.

Welded precision Production method:
Cold drawn on the weled steel tubes, to reach high accuracy on the OD and WT tolerance

Standard Packing:
In Hexagonal Bundles, with anti-rust oil protection, with seaworthy packing

E355 E235 Etc steel pipe'sDeliver condition:
1). +C No heat treatment after the final cold drawig process DIN 2391 BK
2). +LC After the final heat treatment there is a suitable drawing pass DIN 2391 BKW
3). +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere DIN 2391 BKS
4). +A After the final cold drawing process the tubes are annealed in a controlled atmosphere DIN 2391 GBK
5). +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere DIN 2391 NBK