The continuous shaft twisting J-C-O (J-ing, C-ing and O-ing) process is adopted, which has the characteristics of high forming accuracy, high efficiency and uniform forming stress distribution. The outer diameter of the production specification is Φ356~Φ1626mm, the wall thickness is 6~50mm,It is mainly used for transportation pipes for various purposes such as petroleum, chemical industry, natural gas, electricity, city gas, water supply and drainage, and is also widely used in construction, bridges, docks and other engineering fields.
Standard: API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, BS 5950, ASTM A572 , JIS
Out Diameter: 219.1mm–3048mm
Wall Thickness: 5.0mm-30mm
Length: Up to 70m
Steel Grade:
API 5L: GR A, GR B, X42,X46, X56, X60,X65,X70
ASTM A252 GR 1, GR 2, GR 3
ASTM A53: GR A, GR B, GR C, GR D
BS 4360: Grade 43, Grade 50
EN: S275, S275JR, S355JRH, S355J2H
Surface: Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement
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