Carriage bolt BS, WE CAN PRODUCE KINDS OF CARRIAGE BOLTS, DIFFERENT FINISH, PL,ZP ,BL AND HDG.GRADE FROM CLASS 4.8 UP TO 8.8, RAW MATERIAL IS FROM CARBON STEEL.
Carriage bolt BS, FINISH ZP, CLASS 4.8
Haiyan County Hongyu Fastener Co., Ltd.
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