Spiral submerged arc welding(SSAW) is its forward direction and forming tube centerline hose reel molding angle (adjustable), side molding edge welding and weld them into a spiral.

SAWH STEEL PIPE, also known as spiral submerged arc welded steel pipe, is a spiral welded steel pipe produced by double-sided submerged arc welding. Spiral welded pipes are formed using narrower sheets or hot rolled coils, which greatly reduces their production costs. The spiral welding process allows the production of large diameter pipes suitable for transporting large quantities of oil and gas.

SPIRAL STEEL PIPE, also known as spiral submerged arc welded steel pipe, is a spiral welded steel pipe produced by double-sided submerged arc welding. Spiral welded pipes are formed using narrower sheets or hot rolled coils, which greatly reduces their production costs. The spiral welding process allows the production of large diameter pipes suitable for transporting large quantities of oil and gas.

SPIRAL WELDED PIPE, also known as spiral submerged arc welded steel pipe, is a spiral welded steel pipe produced by double-sided submerged arc welding. Spiral welded pipes are formed using narrower sheets or hot rolled coils, which greatly reduces their production costs. The spiral welding process allows the production of large diameter pipes suitable for transporting large quantities of oil and gas.

2LPE anti-corrosion steel pipe is a type of steel pipe with anti-corrosion function. Its anti-corrosion structure consists of two layers, the first layer is adhesive and the second layer is polyethylene, which are integrated into one material.

3PE anti-corrosion steel pipe refers to a three-layer structure polyethylene coating (MAPEC) external anti-corrosion steel pipe, which is a commonly used anti-corrosion pipeline in China, generally referring to the anti-corrosion of the outer wall of the steel pipe. Its structure consists of three layers, the first layer is epoxy powder, the second layer is adhesive (AD) with a thickness of 170-250um, and the third layer is polyethylene (PE) with a thickness of 2.5-3.7mm. These three materials are integrated and firmly bonded with steel pipes to form an excellent anti-corrosion layer.

3LPE anti-corrosion steel pipe refers to a three-layer structure polyolefin coating (MAPEC) external anti-corrosion steel pipe, generally referring to the anti-corrosion of the outer wall of the steel pipe. It usually consists of a three-layer structure: the first layer is epoxy powder (FBE), the thickness of which is generally not explicitly mentioned; The second layer is adhesive (AD) with a thickness of 170-250 μ m; The third layer is polyethylene (PE) with a thickness of 2.5-3.7mm. In practical operation, these three materials are mixed and integrated into one, and after processing, they are firmly combined with steel pipes to form an excellent anti-corrosion layer.

PP anti-corrosion steel pipe is a composite pipe formed by lining or coating polypropylene (PP) material with steel pipe as the matrix. Its core structure combines the mechanical strength of steel pipes and the corrosion resistance of polypropylene, forming a seamless anti-corrosion layer through rolling, spraying, or hot melt processes. The three-layer polypropylene (3PP) structure is a common form, consisting of an epoxy powder base layer, an adhesive intermediate layer, and a polypropylene surface layer, which can effectively isolate corrosive media from contact with steel pipes.