... seamless steel pipe 1. many different sizes of the products 2..low and medium pressure boiler ,high pressure boil thick wall seamless ... steel pipe1) Standard:API 5L,ASTM 36.10M,A106,A53,DIN 1629,1626,BS,JIS.etc2) Material: ASTM A106/ ... XXS etc.6) Technique:Hot Rolled,Cold Drawn,Seamless,ERW,LSAW,SSAW,7) Surface treatment:bare,black ... ,construction,,metallurgy,etc thick wall seamless steel pipe