０概述为使涂塑钢管在市场竞争中立于不败之地，必须保证其整体质量。这就要求不论用哪种涂塑方法加工的涂塑钢管，只要塑膜厚度大于１mm，那么在外涂塑直管两端１００～１５０mm处，内涂塑钢管的法兰端面都应进行整修，所有涂塑表面也应进行再加工，这就是涂塑钢管的精加工。 0 Overview In order to make plastic pipe in the market competition in an invincible position, we must ensure its overall quality. This requires that no matter what kind of plastic coating method of processing plastic pipe, as long as the plastic film thickness is greater than 1mm, then outside the straight plastic pipe at both ends of 100 ~ 150mm, the inner plastic pipe flange face should be refurbished, all Plastic surface should also be re-processed, which is the finishing of plastic pipe.