... standard JB/T4730,GB/T2970 and SEL072, EN10160 standard S3T4,ASTM,A578, grade C and grade I standard jb/t8467, and ... steelS355JO,S355J2, S355NL1,A516Gr55(60,65,70)EN10025-2:2004ASTM A516/A516M-06Boiler vesselP355, P355NH, P355NL1, P355NL2P355NL2, A516Gr55(60,65,70 ... detection to meet the grade I standard JB/T4730,GB72790 ASTM,A435, A578, JISG0801, JISG0901, sel072, NFA04305,3.Plate performance control ...