Pinhole. A short unwelded area in the weld line extending through the entire pipe so that fluid will leak out through the area very slowly.
针孔。指焊缝线上位焊接的、贯穿管子整个壁厚的细孔,可导致流体从该孔缓慢漏出。
Pinhole. A short unwelded area in the weld line extending through the entire pipe so that fluid will leak out through the area very slowly.
针孔。指焊缝线上位焊接的、贯穿管子整个壁厚的细孔,可导致流体从该孔缓慢漏出。
and a recently approved Uniform Fire Code Standard,80.106, requires a mechanical ventilation rate of 200 fpm across all unwelded fittings).
近来通过的统一消法标准80.106要求通过所有无焊接装置的机械通风速度为200fpm)。
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