| 1. | External protection of ductile cast iron pipes ; polyethylene sleeving 球墨铸铁管的外部防护.聚乙烯护套 |
| 2. | Sheathing ductile cast iron pipes - part 3 : zinc coating with protective sheathing 护套式可塑铸铁管道.第3部分:带护套保护的镀锌层 |
| 3. | The continuous melting technique of hot air and water cooling cupola for centrifugal ductile cast iron pipes in large - scale production 大批量生产离心球墨铸铁管用热风水冷中天炉的连续熔炼技术 |
| 4. | Foundry products . ductile cast iron piping elements . socket serie . gs express joint . assembly dimensions and joint accessories 铸造产品.可锻铸铁管道零件.承插系列. gs快换接头.组装尺寸和接头附件 |
| 5. | Foundry products . ductile cast iron piping elements . socket series . gs standard joint . assembly dimensions and joint accessories 铸造产品.可锻铸铁管道零件.承插系列. gs标准接头.组装尺寸和接头附件 |