Hot Dipped Galvanized Seamless Steel Pipe 1.Standard:ASTM A106,A53,GB/ ... 914mm 3.WT:2-60mm Hot Dipped Galvanized Seamless Steel Pipe1.Standard: ASTM A106,ASTM A53,EN10255,GB/ ... oil and natural gas pipeline, water supply pipeline, boiler, fertilizer factory, chemical industry, industrial pipeline networks, foundation, construction.5.Surface ... to your requirement. Hot Dipped Galvanized Seamless Steel Pipe