Large Diameter spiral steel pipe refers to the spiral steel pipe in big size, which is generally required to be more than 1000mm in diameter.
Large diameter spiral welded pipe production process: First the steel belt bending molding, and then welded up, made into a specified size of large-caliber spiral welded pipe, processed into a pipe, to carry out hydraulic testing, bending, flattening and other tests, and according to customer requirements for large diameter spiral welded pipe internal steel support. Can also be done in the interior coating anti-corrosion.
Large diameter spiral welded pipe is mainly used: municipal construction of underground fluid pipeline, chemical industry, agroforestry irrigation and so on.
|STANDARD||ASTM, GB, API, JIS, BS, DIN, YB, SNY, etc|
|MATERIAL||Q235, Q195, Q345, Q215,|
|SPECIFICATION||Outer diameter: 1000mm-3620mm|
|Wall thickness: 2.5mm-30mm|
|Length: 6m-12m or as requested|
|SEAM||SAW(Spiral welded),SSAW(Spiral submerged-arc welded)|
|SURFACE||Black painted, PE/PVC/PP coated, epoxy coating|
|END PROTECTOR||Iron protector|
|PACKAGE||Standard export package, suit for all kinds of transport or as required.|
|APPLICATION||1) General service for industries ( petroleum, chemical, aviation, etc.)|
|2) Fluid, gas and oil transport,|
|3) Press and heat transmission,|
|4) City construction, etc.|
CREDIT STEEL INDUSTRIAL has 4 factorys, which located in Tianjin city and Heibei province, boasts its more than 500 staffs; professional technicians more than 100 people; owned 12 advanced production lines, full of inspection equipments and supporting energy saving facilities.
The production process of straight seam steel pipe is relatively simple. The main production processes include high-frequency welding straight seam steel pipe and submerged arc welding straight seam steel pipe.