PPH管道是(shi)一(yi)種(zhong)高(gao)分子量的管道低(di)熔(rong)流率(lv)的均聚聚丙烯,GF管道經過β改性具有細膩的結晶結構,使(shi)它即使(shi)在低(di)溫(wen)下(xia)也(ye)有優(you)異…