bronze coupling

bronze is an old casting,Chinese ancient people has casting it thousands years ago, the casting is 

wear and corrosion resistance,

we can use them for fire hydrant parts,art craft,valve,impeller,quick coupling,pump parts,

we adopt   the technic:clay sand,resin sand,water glass sand,pre-coated sand. equipped with core

 making machine,sand processing machine,

cnc machinery,surface treatment machinery,can manufacture the material:brass,copper,bronze etc,

non-ferrous metal casting.

usually the tolerance:CT8-11,