The connection method between the simple flange connection method and cast iron pipe and steel pipe.
2
本文介绍了RPM管的主要性能，并与塑料管、钢管、球墨铸铁管及钢筋混凝土管的相应性能作了分析和比较。
The main properties of RPM pipe are introduced and compared with the properties of the plastic pipe, steel pipe, ductile iron pipe and reinforced concrete pipe.
3
所有的加热原件均用高温镁填充，发热管为高质量的不锈钢管，铜管，以及铁管等。
All its electrical heating elements, with high-temperature magnesium WATT as filler, which are made of good quality stainless steel Tubes, cooper Tubes, and iron Tubes, ect.
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