Anticorrosive Spiral Welded Steel Pipe
Brief Introduction: Taken strip coil as raw material, spiral steel pipe is formed by extrusion under normal temperature and welded into spiral welded steel pipe by the technology of double wire and double-faced submerged-arc.
Material: Q235A, Q235B, 10#, 20#, Q345(16Mn, L245(B), L290(X42, L320(X46), L360(X52),L390(X56),L415(X60),L450(X65),L485(X70),L555(X80),L290NB/MB(X42N/M),L360NB/MB(X52N/M),L390NB/MB(X56N/M), L415NB/MB(X60N/M), L450MB(X65), L485MB(X70), L555MB(X80).
Application: Spiral steel pipe is mainly used in public water project, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction. It is one of the twenty key products developed by China.
For liquid transportation: Water supply, drain off water, petroleum transportation etc.
For gas transportation: Coal gas, steam, liquefied petroleum gas, natural gas etc.
For structure: Piling, bridge, wharf, road, architectural structure etc.
3PE anticorrosive coating mainly means the pipeline has three PE anticorrosive structures:the first layer is epoxy powder (FBE),the second layer is adhesive (AD), and the third layer is polyethylene (PE) (the color of polyethylene is black at most time, it can also be produced blue or yellow depends on customer requirements).
2PE doesn’t include the first layer.
Three materials mix together, and combine firmly with the steel pipe and become excellent anticorrosive coating, which can be used under 70°C degree environment.
Standards: SY/T0413-2002,GB/T23257-2009,DIN30670 etc.