pp r pipe and fitting 与人打“的”时
faser PP-R PIPE 法塞尔钢铁厂PP
PP-R hot water pipe 经营范围
polypropylene pipe pp-r 聚丙烯塑料管
·2,447,543篇论文数据，部分数据来源于NoteExpress
Our factory specializes in producing three types of polypropylene PP-R pipe, fittings, tube cards, debit seat tube and other products.
本厂专业产三型聚丙烯PP-R管材、管件、管卡、管扣座等产品。
Some problems of raw material, equipment and production technology etc. needing at tension for the production and applicant on of PP-R pipe were introduced in this paper.
本文从原料、设备与生产工艺等几个方面介绍了PPR管材生产和应用过程中应注意的问题。
PP-R plastic water supply pipe solves the problem of pipe water quality, and worths popularization from both in economy and technology.
塑料给水管材解决了管道的水质问题，从经济技术角度来讲十分可行，值得推广。
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