内充气设备-模具：采用分流锥式结构，此结构减小挤出压力，塑化均匀，高速挤出成型稳定，管材各项指标均达到国家标准。管材壁厚均匀，内外平滑，无凹凸或，定型更稳定，尺寸更准确.
Die: adopt taper structure, reduce extrusion pressure, uniform plasticization, high speed and stable extrusion. All indexes of the pipeline meet the national standards. The pipe wall thickness is even, the inside and outside are smooth, without bumps and scars, and the installation is more stable and the size is mor