STEEL PIPE
STEEL GRADE : Q235B, Q345B,20#, GRB, X42, X52，X60，X70，X80，A106B, A53 B.
STANDARD: SY/T 5037-2000，SY/T 5040-2000，GB/T 9711.1-1997，GB/T9711.2-1997，API 5L,
ASTM A252，EN, JIS , DIN AND SO ON.
OUTSIED DIAMETRE: 219MM-3500MM
WALL THICKNESS: 6MM-25MM
LENGTH: 6M -- 12M
COATING: 3PE, BLACK JACKET ANTICORROSIVE, BLACK PAINTING, CEMENT MORTAR