This Website describes DIN standard Fastener in China.Wenzhou Nanlong Import & Export Trading CO.,LTD.(China)-There are Din7990 - Hexagon head bolts with hexagon nut for steel structures.And the the material are stainless steel (TP304-18-8,316,316L,310S.309S..317L.347H,904L...),carbon steel (C1018 C1022),aluminium,brass, titanium & titanium alloy(Ti G1,Gr2,G4,Gr5,G7) and so no. |