Specification: HP80MM-HP430MM Standard: EN10067 GB9945 Approved by CCS, GL, LR, ABS, BV, DNV, RINA, NK, KR. we specialized in bulb flat for shipbuilding about 20 years , and have the strength to supply quality goods and low price. Our products approved by CCS,ABS,GL,LR,DNV,BV,NK,KR,RINA etc classification society.Standards according to GB/T9945-2001 "HOT-ROLLED BULB FLAT STEEL" and EN 10067:1997 ...