u-bolts for powder product (7)
Category: Nut, Bolt and Screw Making Machines
Main grade:4.6,4.8,5.6,5.8,6.8,8.8
Main raw material:Carbon steel as Q235,35#,45#etc
Surface:Plain,Black,Zinc,HDG,Dacromet etc
we a sepecil rail fastener manufacture , manufacture all kind of rai...