... Double End Bolt,Special 1.ISO,ANSI,CE,JIS,DIN,BS& non-standard fastener supply 2.ROHS is capable 3.Grade:4 ... .Carton steel is high quality iron,such as 1022,1018,1010,1008,1015...Medium carbon ... They are used in most of places such as drywall,concrete,chipboard,machine,wood...2) Main export ... ) Service:OEM service offered,Design service offered.4) Make samples as per customer's request are available .5 ...