DIN2448 galvanzied steel pipe for water Hot Dipped Galvanized Pipe Hot dipped galvanized pipe : hot dipped galvanized pipe owns thicker zinc coating than pregalvanized pipe ,black pipes will be dipped into zinc pool for galvanized. Zinc coating ... ,EN10219 , JIS G3444:2004 , ASTM A53Steel Grade: GB/T3091 – 2001: Q235 , Q345BS1387 – 1985 , DIN EN10025 ,EN10219 :S235JR ,S275JR,S355JR, S355J2HJIS G3444 ...