The friction property of metal composite pipes with plastic-plating was measured and compared with that of zinc-plating and polypropylene pipes of the same size.
测定了金塑复合管的阻力性能，并与同一规格的镀锌管、聚丙烯管进行比较。
The friction property of metal composite pipes with plastic-plating was measured and compared with that of zinc-plating and polypropylene pipes of the same size.
测定了金塑复合管的阻力性能，并与同一规格的镀锌管、聚丙烯管进行比较。
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