Pre-welding of straight seam steel pipe:Pre-welding includes seams and welds.1. There is no wrong edge or the wrong edge is smaller than the specified value. Generally, the amount of the wrong edge is ≤8% of the plate thickness, and the maximum is not more than 1.5mm.2. It is necessary to ensure tha

At present, there are many applications of reinforced 3pe anti-corrosion steel pipes. However, due to the low precision of the wall thickness of reinforced 3pe anti-corrosion steel pipes, there is a phenomenon of uneven thickness, which will have a great impact on the performance of reinforced 3pe a

Product name: Coated steel pipeMaterial: Carbon steelSize: 42.2*4.85*6000mmStandard: API 5LQuantity: 1000 tonsMany cooperations have given the customer full confidence in THREEWAY STEEL.

1. The use of large-diameter straight seam welded pipes can be divided into oil well pipes (casing, oil pipes, drill pipes, etc.), line pipes, boiler pipes, mechanical structure pipes, hydraulic prop pipes, gas cylinder pipes, geological pipes, chemical pipes (high-pressure fertilizer pipes, petrole