水管塞住了。
By reforming the layout of longitudinal waterpipe in pusher furnace, the billet cooling can be reduced and the heating quality improved.
介绍了对推钢式连续加热炉炉底纵水管布置的改进，减少对钢坯的冷却，改善加热质量。
The technical process, properties and characteristics of the waterpipe produced by mixing and modifying the thermoplastic rubber and the thermoplastics were introduced.
介绍了用热塑性橡胶和热塑性塑料共混改性生产水带管的生产工艺流程及管材的性能和特点。
After analyzing the characteristics and application situation of the polyvinyl chloride waterpipe, the variation of the water quality in the plastic water pipe is studied.
分析了我国塑料给水管的特点及应用现状，对聚氯乙烯塑料给水管中化学成分对水质的影响进行了研究。
After analyzing the characteristics and application situation of the polyvinyl chloride waterpipe, the variation of the water quality in the plastic water pipe is studied.
分析了我国塑料给水管的特点及应用现状，对聚氯乙烯塑料给水管中化学成分对水质的影响进行了研究。
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