... Steel Pipe , galvanized steel pipe Q345,galvanized steel tube,carbon steel pipe Q345StandardBS1387, BS4568, ASTM A53, GB/T3091-2001,etcRelated GradeQ195,Q235,Q345,10#,20#,A53,A36,Round ... dip galvanized pipe surface plating layer or electric galvanizedwelded steel pipe. Zinc can increasethe corrosion resistance of steel and prolong service life. Galvanized pipe extensive use ...