钢管

• Tape coating systems for the exterior of steel water pipelines
  供水钢管外部胶带包覆系统
• Fabrication of steel pipe specials public works category
  特别钢管的制造
• Acceptance , packing , marking and certification of pipe
  钢管的验收包装标志和质量证明书
• Acceptance , packing , marking , and certification of pipe
  钢管的验收包装标志和质量证明书
• He slipped the telescope into a steel tube
  他将望远镜收进一根钢管内。
• Dynamic analysis for concrete filed steel ubular arch bridges
  钢管混凝土拱桥动力特性分析
• 900mpa specification for chromium - molybdenum steel tube 900 mpa weldable
  铬-钼钢管材规范
• The optimal model for the order and transportation of steel tubes
  钢管订购和运输优化模型
• Alloy steel boiler and heat exchanger tubes
  锅炉与热交换器用合金钢钢管
• Design specification for steel penstocks of hydroelectric stations
  水电站压力钢管设计规范