| 1. | Development of cold roll technology for threaded tube
螺纹管冷轧工艺的研究和发展 |
| 2. | Pipework . threaded fittings with gasket on shoulder
管道.凸肩带垫片的螺纹管接头.标准压力10 |
| 3. | Pickling technology for ultrathin stainless steel screwing tubes
超薄型不锈钢螺纹管酸洗工艺 |
| 4. | Threaded pipe fittings in malleable cast iron
可锻铸铁制螺纹管件 |
| 5. | Malleable iron threaded pipe unions ; classes 150 , 250 , and 300
可锻铁螺纹管活接头:等级150 250和300 |
| 6. | Threaded pipe fittings in malleable cast iron and cast copper alloy
可锻铸铁和铸铜合金的螺纹管配件 |
| 7. | Separable unthreaded pipe connections for metal gas pipes
第1部分:金属煤气管道用可拆卸的无螺纹管连接件 |
| 8. | Screw - tube for marine auxiliary boiler
船用辅锅炉螺纹管 |
| 9. | Malleable iron threaded pipe unions
可锻铁螺纹管活接头 |
| 10. | Pneumatic tools , screw nozzle tips
气动工具.螺纹管嘴 |
