模具设备:采用直角多层螺旋分流式结构,此结构减小了挤出压力,塑化均匀,高速挤出成型稳定,管材各项指标均达到我国的标准。结构为新型烯烃类组合式,管材壁厚均匀,内外平滑,无凹凸或疤痕,定型更稳定,尺更准确. Die: the right angle multi-layer spiral split structure is adopted, which reduces the extrusion pressure, plasticizes evenly, and the high-speed extrusion molding is stable. All indexes of the pipe meet the national standards. The structure is a new type of olefin combination type, with uniform w