高密度PE外护管生产工艺及质量影响因素作者：杨渝成等 文章来源：胜利油田油建华大实业总公司 点击数： 428 更新时间：2010-1-28 22:15:33 The production equipment and processing technic of HDPE external protection tube as well as the product standard are introduced. The influences of material pretreatment time，extrusion molding temperature，cooling point setting，pulling speed and corona treatment and other factors on quality of HDPE external protection tube are discussed under the special material formula.高密度聚乙烯(HDPE)外护管主要用于预制直埋保温管道的外护防腐
