The paper discussed the design of U pipe bending machine based on hydraulic pressure automatic - control system.

本文介绍了基于液压控制系统的自动U型弯管机的设计.

互联网

Formula design, preparation and basic properties of solvent based adhesive used for PVC U - pipe are described.

介绍了PVC -U 管用溶剂型胶粘剂的配方设计, 配制方法及其基本性能.

互联网