What is the difference between PE pipe and PVC pipe?

1、PE管只含有碳氢两种元素，卫生性能好，PVC含有铅等重金属，卫生性能稍差一些，不过加钙锌稳定剂的PVC管卫生性能也复合国家卫生标准GB/T17219。

PE pipe contains only two elements of carbon and hydrogen, and its sanitary performance is good. PVC contains heavy metals such as lead, and its sanitary performance is slightly worse. However, the sanitary performance of PVC pipe with calcium and zinc stabilizer also complies with the national sanitary standard GB/T17219.

2、PE管才用热熔连接，连接更加牢固；PVC管小口径用丝扣连接，大口径用胶圈连接，连接安全性能稍差一些，不过施工成本更低。

PE pipes are connected by hot melting, and the connection is more firm; The small diameter of PVC pipe is connected with screw thread, and the large diameter is connected with rubber ring. The connection safety performance is slightly poor, but the construction cost is lower.

3、 同样压力下PE管壁厚更厚，价格更贵；而PVC要薄一些，价格便宜。

Under the same pressure, the wall thickness of PE pipe is thicker and the price is more expensive; PVC is thinner and cheaper.

4、 PE管除了给水还可应用于燃气输送等领域；PVC管还可应用于排水，由于具有阻燃绝缘性能还可应用于阻燃穿线领域。

PE pipe can also be used in gas transmission and other fields besides water supply; PVC pipe can also be used for drainage, and can also be used in the field of flame-retardant threading due to its flame-retardant insulation performance.

PE是聚乙烯塑料，最常见的一种塑料。PE管又叫高密度聚乙烯管，强度高、耐高温、抗腐蚀、无毒、耐磨等特点，被广泛应用于给排水制造领域。因为它不会生锈，所以，是替代普通铁给水管的理想管材。

PE is polyethylene plastic, the most common plastic. PE pipe, also known as high-density polyethylene pipe, is widely used in the field of water supply and drainage manufacturing due to its high strength, high temperature resistance, corrosion resistance, non-toxicity and wear resistance. Because it will not rust, it is an ideal pipe material to replace ordinary iron water supply pipe.

PVC的主要成份是聚氯乙烯，加入其他成分可增强其耐热性、韧性、延展性等。PVC管是由聚氯乙烯树脂与稳定剂、润滑剂等配合后用热压法挤压成型，是最早得到开发应用的塑料管材。PVC管抗腐蚀能力强、易于粘接、价格低、质地坚硬，但是只适用于输送温度不超过45℃的给水系统中。

The main component of PVC is PVC. Adding other components can enhance its heat resistance, toughness, ductility, etc. PVC pipe is extruded by hot pressing after the combination of PVC resin with stabilizer and lubricant, and is the earliest plastic pipe developed and applied. PVC pipe has strong corrosion resistance, easy adhesion, low price and hard texture, but it is only suitable for water supply system with transmission temperature not exceeding 45 ℃.

PVC管材优点：Advantages of PVC pipe:

1、 具有较好的抗拉、抗压强度：但其柔性不如其他塑料管。

It has good tensile and compressive strength, but its flexibility is not as good as other plastic pipes.

2、流体阻力小：PVC-U管材的管壁非常光滑，对流体的阻力很小，其粗糙系数仅为0.009，其输水能力可比同等管径的铸铁管提高20%，比混凝土管提高40%。

Small fluid resistance: PVC-U pipe has very smooth pipe wall and small resistance to fluid. Its roughness coefficient is only 0.009. Its water delivery capacity can be 20% higher than that of cast iron pipe with the same pipe diameter and 40% higher than that of concrete pipe.

3、耐腐蚀性、耐药品性优良：PVC-U管材具有优异的耐酸，耐碱，耐腐蚀，不受潮湿水份和土壤酸碱度的影响，管道铺设时不需任何防腐处理。

Excellent corrosion resistance and drug resistance: PVC-U pipes have excellent acid resistance, alkali resistance and corrosion resistance, and are not affected by moisture and soil acidity and alkalinity. No anti-corrosion treatment is required during pipeline laying.

4、具有良好的水密性：PVC-U管材的安装，不论采用粘接还是橡胶圈连接，均具有良好的水密性。

Good water tightness: PVC-U pipes are installed with good water tightness no matter they are connected by adhesive or rubber ring.

5、防咬啮：PVC-U管不是营养源，因此不会受到啮齿动物的侵蚀。根据美国国家卫生基金会在密歇根州进行的试验证明，老鼠不会咬啮PVC-U管材。

Antibite: PVC-U tube is not a nutrient source, so it will not be eroded by rodents. According to the test conducted by the National Health Foundation of the United States in Michigan, mice will not bite on PVC-U pipes.

6、性能测试：固化时间 收缩率 劈裂强度 拉伸性能 剥离强度 热稳定性 适用期 贮存期 有害物质释发。

Performance test: curing time shrinkage, splitting strength, tensile strength, peeling strength, thermal stability, applicable period, storage period, release of harmful substances.

Recommand products from TDD:

Tianjin Dagu Chemicals PVC Resin DG-700

PVC Resin SG-3