... available according to requirements.2,anti-corrosion and high-temperature resistant with black painting.3,all the production process ... :Natural gas, petroleum, chemical industry, electric power, metallurgy thermodynamic fields, water supply engineering, steam heating, hydroelectric power station and long ... ': aBigImageSrc } ); } )(); API5L X42,X46,X52,X56,X60,X65,X70 steel pipe/oil and gas line pipe