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PVC管道分为U-PVC管 pvc管（pvc收缩管和PVC不收缩管），所以PVC管道涉及到的行业很多，主要用途：U-pvc管主要用于工程及工程穿线用管，下水道管等，而PVC不收缩管主要用电子元件，家电，汽车，机械，玩具，马达及变压器领域产品，电线电缆的保护，PVC管是一种柔软阻燃不收缩套管。具有良好的电气及物理性能，耐酸，耐腐蚀性及优良的阻燃性能。
PVC穿线管有 16 20 25 30 40 50 75 90 110
PVC排水管有40 50 75 90 110 160 200 250 315 400 500
PVC给水管有20 25 32 40 50 63 75 90 110 160 200
PVC管是聚氯乙烯材料的简称，在家庭装修中一般套于电线外部用于保护电线，防止电线受损，具有隔热、保温、防潮等作用。
家庭装修常用的PVC穿线管是四分管、六分管，对应的管径分别是16mm、20mm。
输送、保护作用
有软管、硬管
加纤、波纹管、排水、给水、穿线管、雨水、、、、等
规格太多了
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