Specifications of Seamless Tubes(or pipes)

Size: (Size can be customized.)
Outer Diameter 6mm-2500mm (3/8″-100″)
Wall Thickness 6mm-2500mm (3/8″-100″)
Length Up to 18.3 meters per piece.

Standard:

 GB12771-91, ASTM A1053/A1053M-06, A268/A268M-05A, A269-07 A270-03A, A312/A312M-06, A358/A358M-05, A632-04 A789/A789M-05b, A790/A790M-05b, A872/A872M-07A, A949/A949M-01(2005).
ASTM B161 B163 B165 B167 B444 B407 B423 B622 B729 B338 B521 B523 B658 B861

Materials available: 

ss304, ss316, ss2205, Alloy200, Alloy201, Alloy400, AlloyK500, Alloy600, Alloy601, Alloy625, Alloy718, Alloy800, Alloy800H, Alloy800HT, Alloy825, AlloyC276, AlloyC22, AlloyB2, AlloyB3, Alloy59, Alloy20, etc.

Production Processes

1. 1. Main production processes (main inspection processes) of hot-rolled seamless steel pipes:
      Pipe blank preparation and inspection → pipe blank heating → piercing → pipe rolling → reheating of raw pipe → sizing (reducing) → heat treatment → straightening of finished pipe → finishing → inspection (non-destructive, physical and chemical, bench inspection) → warehousing.
   2. Main production processes of cold rolled (drawn) seamless steel pipes:

1. 1. Blank preparation → pickling and lubrication → cold rolling (drawing) → heat treatment → straightening → finishing → inspection