... :8.8,10.9,12.9 4Material:Q235,45#,4Cr Rail fastener high strength structural steel nut bolt I. Item:High ... used. We exported to world markets, such as U.S.A., Canada, Cuba, Germany, Japan, Singapore, Malaysia and Africa and so ... products 4.Factory view figurespackagingfactory viewTesting equipmentsWorkshop Welcome your visit! Rail fastener high strength structural steel nut bolt