The quality of spiral tube anticorrosive material plays a decisive role

　　The material used for the anticorrosion treatment of the spiral tube plays a decisive role in the quality of the anticorrosive steel pipe. Raw materials must be rigorously tested for anti-corrosion treatment. The anti-corrosion materials required for different anti-corrosion treatments are different.

　　Epoxy coal tar asphalt anticorrosion is mainly applied to asphalt anticorrosive coatings and polypropylene non-woven fabrics. The main raw materials for PE anticorrosive steel pipes are polyethylene and polypropylene.

　　Cold tape refers to the tape used for anti-corrosion wrapping. Cold tape generally includes polyethylene (composite) anti-corrosion tape, polypropylene reinforced fiber anti-corrosion tape, aluminum foil anti-UV anti-corrosion tape, polyethylene 660 (modified asphalt) tape, double-sided tape Anti-corrosion tape (this tape is rarely used in China, but it is very practical, widely used abroad, generally used for export) and epoxy coal asphalt anti-corrosion tape. The implementation standards are SY / T 0414-98 and SY / T0447-96.

　　The spiral tube mainly uses epoxy resin composite coating, phenolic epoxy coating and polymer composite material. Cement mortar is mainly suitable for cement mortar anti-corrosion steel pipe.

　　Spiral tube repair The general heat shrink belt is designed for the corrosion protection of insulated and insulated steel pipes for buried and overhead spiral welded joints. It is a composite of a radiation crosslinked polyolefin substrate and a special sealed hot melt adhesive. Special sealing hot melt adhesives form good adhesion to polyolefin substrates, steel pipe surfaces and solid epoxy coatings. The cold compress and 3PE heat shrinkable belt are characterized by: the main material anticorrosive layer spiral tube suitable for various materials, and other methods are applicable to the same or close to the main anticorrosive layer spiral tube material.

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