... ,45#,4Cr Rail fastener high strength structural steel nut bolt I. Item:High strength bolts for steel structuresII. Specification: DIN 6914, DIN 6916 ... 1230 III. Usage:Supply to railway, highway, bridge, boiler with steel structure, industry workshop, high civil buildings, hoisting machinery and so ... viewTesting equipmentsWorkshop Welcome your visit! Rail fastener high strength structural steel nut bolt