... seamless steel pipe 1. many different sizes of the products 2..low and medium pressure boiler ,high pressure boil thick wall seamless steel ... XXS etc.6) Technique:Hot Rolled,Cold Drawn,Seamless,ERW,LSAW,SSAW,7) Surface treatment:bare,black ... galvanized,3pe,etc8) Length: 5.8 meters for 20' container, 6 meters to 12 meters for 40' ... boiler,construction,,metallurgy,etc thick wall seamless steel pipe