The selection of pipe wall thickness,the calculation and design key points of the melt flow,melt pipe flow pressure fall and melt flow speed in the design of melt pipes were introduced in detail.

• 介绍了熔体管道设计中管道壁厚选择、熔体流量、熔体管道流动压力降和熔体流速等计算方法和设计要点。