... and medium pressure boiler ,high pressure boil thick wall seamless steel pipe1) Standard:API 5L,ASTM 36.10M,A106 ... XS, XXS etc.6) Technique:Hot Rolled,Cold Drawn,Seamless,ERW,LSAW,SSAW,7) Surface treatment:bare,black painting, ... anti rust oil,hot dipped galvanized,3pe,etc8) Length: 5.8 meters for 20' container, 6 meters to ... ,shipbuilding,boiler,construction,,metallurgy,etc thick wall seamless steel pipe