... . 3.Standard: GB/AISI/ASTM/JIS pipe line1.Grade:L245,L360,A53,J55,N80 ,X42,X46,X52 ... ,20,Q295,Q345 Stardand GB/T8163-2008,ASTM A53-98 ASTM A192 ASME S192 JIS G3452-1998 FIS ... Medium pressure BoilerGrade:10,20 StardandGB3087-2008,ASTM A179,ASTM A192,ASTM SA179,SA192,BS30595. ApplicantHigh pressure seamless ... pipeline project of boiler,water&petroleum.4), ASTM A53 It is used for conveying water,petrolem,gas ...