... boiler seamless steel pipe 1) Standard:API 5L,ASTM 36.10M,A106,A53,DIN 1629,1626,BS,JIS.etc API 5L X70 boiler seamless steel ... , XXS etc.6) Technique:Hot Rolled,Cold Drawn,Seamless,ERW,LSAW,SSAW,7) Surface treatment:bare,black painting ... meters to 12 meters for 40' container9) Application:petroleum,gas,chemical,power,shipbuilding,boiler,construction,,metallurgy,etc API 5L X70 boiler seamless steel pipe