球墨铸铁管件
Ductile iron pipe fittings
铸态铁素体球铁螺纹管件
As-cast ferritic ductile iron threaded pipe fitting rough castings
薄壁球铁件
thin-wall ductile cast iron
thin wall nodular iron castings
大断面球铁件
heavy section ductile iron casting
heavy section nodular iron casting
大口径球铁管
Big-diameter ductile iron pipes
Ductile Iron Pipe with Large Diameter
大型灰铁及球铁件
heavy gray and nodular iron castings
离心球铁管
centrifugal spheroidal graphite iron pipe
Centrifugally casted ductile iron pipe
centrifugal nodular cast iron pipe
耐压球铁件
high pressure resistant ductile iron castings
球铁管
iron casting pipe
Spherical Graphite Cast lron Pipe
nodular iron pipe
ductile iron pipe
ductile iron pipes
球铁件
nodular iron casting
nodular graphite cast iron
Ductile iron casting
涂料法生产球铁管
The coating law production
小型球铁件
small ductile iron casting
灰口铸铁管件
Gray iron castigs for pipe fittings