The common anticorrosive coating fillings for long-distance oil and gas pipelines are thermal shrinkage material fillings, liquid polyurethane fillings, solvent-free liquid epoxy fillings, viscoelastic body tape, and other outer protective belt fillings.

Heat-shrinkable material has become the most common anticorrosive layer filler, with a wide range of applications, strong construction operability, excellent comprehensive performance, and other characteristics. Its disadvantage is that it is sensitive to temperature and easy to produce pores in the joints with primer and pipeline anticorrosion layer, leading to a significant reduction in peel strength and higher requirements for the environment and construction personnel.

Liquid polyurethane filler can be used in a low-temperature environment, its environmental stress resistance, high chemical stability, and good bonding performance, but the price is high, strong dependence on equipment.

The construction method of solvent-free liquid epoxy coating is to use a gas-polarized steel pipe surface and pipeline anticorrosive layer and then coated with a solvent-free coating. The solvent-free liquid epoxy filler has a good polarization effect and simple coating maintenance, but the effect of environmental stress is poor. The polarized gas is toxic and irreversible to the human body. During construction, workers need to wear protective clothing to recover gas and avoid environmental pollution.

At present, viscoelastic body tape is widely used in shields and other special mark sections. Its advantages are low requirements for environment and construction personnel, easy to control the construction quality, and good anti-corrosion effect. The downside is that it is expensive and cannot be used at high temperatures. The outer protective tape matching with viscoelastic body tape includes heat shrinkable tape, cold polypropylene tape, pressure sensitive tape, etc.

Cangzhou shenlong pipe manufacturing co., ltd. Is engaged in oil, gas, water, coal slurry mixing medium steel pipeline coating operations, anti-corrosion, insulation, piping is set in a body's specialized pipeline engineering precast construction enterprises, products used in oil pipeline, chemical piping, electrical, pipe, gas pipe, heat pipes, sewage pipes, etc. Anti-corrosion processing of straight pipe and bend pipe DN40-3000 three-layer structure polyolefin (PE, PP, TPEP,3LPE) steel pipe coated with anti-corrosion, DN40-3800 steel hot stewed bend pipe and pipe fittings coated with FBE, epoxy resin coating anti-corrosion, DN40-3800 steel pipe inner wall resistance reduction, solvent-free epoxy steel pipe, epoxy paint anti-corrosion, Coated plastic steel pipe, dip plastic steel pipe. Lined with plastic steel pipe PE, PO, PP, PTFE, HDPE, polymer polyethylene corrosion. The company is in strict accordance with China Petroleum and Natural Gas SY/T0413-2002, national GB/T23257-2009, German DIN 30670, American AWWA C210, and other international and domestic anti-corrosion standards.