Requirement of rust - proof layer of petroleum steel pipeline

　　Oil transportation, no matter by seamless steel pipe or welded tubes, has high demand for pipeline itself. Today, the special topic would be focus on demands of the rust layer for oil steel tubes.

　　The affecting factors for the oil pipeline would conclude transport conditions, long or short distance; open dump time, rust varnish and so on. And how can we ignore the bug during the transportation? This need steel pipes have properties of good construction performance, security, environmental protection, quick drying; bright, transparent film and so on. Thus, we will adopt anti-rust layer with good weather resistance; impact, bumps and impact damage during handling and transport of the oil pipeline, there factor, anti-rust layer should have good impact resistance; the operation of shipping, hot and humid zones, anti-rust layer should have good moisture resistance, salt spray resistance.