The production line adopts three-roller/four-roller bending machine for forming. For the formed short pipe section, tack welding is firstly carried out by CO2 shielded arc welding, heating treatment before welding, and then internal straight welding, external straight welding, internal girth welding, and external girth welding are conducted with single wire, multi-layer and multi-pass welding. We have these steel pipes with outside diameter between610mm and 7000mm, wall thickness between 8.0mm to 230mm, and length between 3m and 100m. Quality standards like API, DNV, ISO, DEP, EN, ASTM, DIN, BS, GB, and CSA are within the range of our capacity. If you have any demands on them, feel free to contact us -sales@ekaship.com.
