bolts 1.Good quality,competitve price. 2.Many types. boltBolts ... :40mm-460mm4.Using:petrochemistry,metallurgy,power,pipelineaccessories etc5.Grade:8.8,9.8,10.9,12.96.Standard:DIN,ANSI/ASME,BS ... :40mm-460mm4.Using:petrochemistry,metallurgy,power,pipelineaccessories etc5.Grade:8.8,9.8,10.9,12.9 6.Standard:DIN,ANSI/ASME ... Office):NO.2,Tariff-freeZone,Qingdao,Shandong,China. good quality hex bolts and nuts