... 剪力钉(焊接螺丝) Welding Studs 卷钉 Coil Nails 合金钢线材盘元 Alloy Steel Wire Rod ...
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NR coil corrugated nails 卷式波浪钉
COIL ROOFING NAILS 油毡卷钉
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If you cannot test geothermal heating principle to the construction, and the ground is absolutely not allowed to drill hammer and hammer nails, to prevent the destruction of the heating coil.
如果无法进行地热加温试验原则上不给施工，而且地上绝对不允许电锤打眼和锤钉，防止破坏加热盘管。
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