This paper analyzes the corrosion problem of absorption and circulation sulfate tank and defects in original water supply pipe design, recommends a new water supply pipe developed by F4 material.
分析硫酸吸收循环槽加水管的腐蚀问题及加水管原设计中存在的缺陷，介绍采用F4材料研制的新加水管。
PVC Pipe with foamed sandwich layer is a new Piping material.
芯层发泡PVC管材是一种新型管道材料。
Square steel-pipe truss is a structure which effectively unions the mature truss manufacturing technology and the new steel-pipe material.
方钢管桁架是一种将成熟的桁架制造技术和新型的钢管材料有机结合的结构体系。
PPR pipe is a new type construction material widely used in civilian and industrial water supply and sewerage system, but it is poor in hot and pressure resistance.
(无规共聚聚丙烯)管材是广泛应用于民用和工业给排水系统的一种新型建筑材料，但存在耐热、耐压性能方面的不足。
The corrugated stainless steel tubing, a new type of gas engineering pipe material, is recommended through the introduction of an American apartment's gas project reform.
通过介绍美国某公寓燃气改造工程，推荐一种新型的燃气工程管材波纹不锈钢管。
PPR pipe is a new type construction material widely used in civilian and industrial water supply and sewerage system, but it is poor in hot and pressure resistance.
PPR(无规共聚聚丙烯)管材是广泛应用于民用和工业给排水系统的一种新型建筑材料，但存在耐热、耐压性能方面的不足。
To solve the traditional long-term and labour-consuming problems existed in communication pipe-line man-hand hole, a new type man-hand hole by processing hard material PVC is proposed.
为了解决传统通讯管道人手孔存在的费时费工等问题，采用硬质聚氯乙稀板材加工制造了一种新型人手孔。
To solve the traditional long-term and labour-consuming problems existed in communication pipe-line man-hand hole, a new type man-hand hole by processing hard material PVC is proposed.
为了解决传统通讯管道人手孔存在的费时费工等问题，采用硬质聚氯乙稀板材加工制造了一种新型人手孔。
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