pipeline fittings造句

Vacuum technology - pipeline fittings - mounting dimensions
真空技术.管道配件.装配尺寸
Tabular layouts of article characteristics for pipeline fittings
第16部分:管道配件用物品特性表格设计
The standard of the products include national standard , petrochemical machinery industrial standard , america standard , japanese standard , germany standard , non - standard flange , which are used in joint valve , pump , petroleum , chemical machinery , pipeline fittings , and equipment components and son on
产品有国标、石油化工机械行业标准、美标、日标、德标、非标法兰等，广泛适用于连接型式的阀门、泵、石油、化工机械、管路附件和设备零部件等行业。
It's difficult to find pipeline fittings in a sentence. 用pipeline fittings造句挺难的