JIS G3444 STK400 کارخانه و تامین کنندگان لوله فولادی کربن گالوانیزه |یوفا
Product Hot Dip Galvanized Steel Pipe Material Carbon Steel Grade Q195 = S195 / A53 Grade A Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2 Q345 = S355JR / A500 Grade B Grade C Standard EN39, BS1139, BS1387, EN10255,ASTM A53, ASTM A500, A36, ASTM A795,ISO65, ANSI C80, ...