1·You can use copper elbows and pipe.
可以用铜弯头和铜管。
2·This paper mainly introduces designing and manufacturing methods of templates for FRP pipe fittings such as tees, elbows used in FRP pipe system for sake of enhancing production efficiency.
本文主要介绍玻璃钢管道系统所用的三通、弯头等管件样板的制作方法及有关的设计计算，以提高玻璃钢管件的生产效率。
3·With aerial wooden stair handrail elbows as the object of study, the design method of relevant group fixture is stated.
本文以空间木制楼梯扶手弯头为研究对象，叙述了该成组夹具的设计方法。
4·The following factors were considered in heat loss calculating model, namely various valves, elbows, compensator, tube diameter, various injection conditions and injecting pipe's eccentric structure.
模型考虑了注汽管线上各种阀门、弯头、补偿器、异径管的影响，考虑了变注入工况和注汽管偏心结构对热损失的影响。
5·The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc.
阀由警戒装置、弹簧、阀碟、扣环和阀座组成，可以和许多管件连接，如缩径管接头、排水弯头等。