... Production Line 1) Qingdao Yonghuanxin Plastic Machinery Co.,Ltd supplies PE Water/gas Supply Pipe Production Line is developed by assimilating the ... PE,PP,PB,PE-RT,ABS,PPR. 2) PE Water/gas Supply Pipe Production Line is of good exterior design, high ... large are often used as HDPE water supply pipes, natural gas supply pipes, in coal mines and other trenchless fields. In ...