The physical properties of Pvc water supply pipe

比重：1.38克/立方厘米，成型收缩率：0.6-1.5%，成型温度：160-190℃。

Specific gravity: 1.38 g / cubic centimeter, molding shrinkage: 0.6-1.5%, molding temperature: 160-190 C.

特点：力学性能，电性能优良，耐酸碱力极强，化学稳定性好，但软化点低. 适于制作薄板，电线电缆绝缘层，密封件等。

Characteristics: mechanical properties, excellent electrical properties, strong acid and alkali resistance, good chemical stability, but low softening point. It is suitable for making sheet, insulation layer of wire and cable, sealing parts and so on.

成型特性：

Molding characteristics:

1．无定形料，吸湿小，流动性差.为了提高流动性，防止发生气泡，塑料可预先干燥.模具浇注系统宜粗短，浇口截面宜大，不得有死角.模具须冷却，表面镀铬；

1. amorphous material, low moisture absorption, poor fluidity. In order to improve the fluidity, prevent the occurrence of bubbles, plastic can be dry in advance. Mold casting system should be short, gate section should be large, no dead angle. Mold must be cooled, surface chromium plating;

2．由于其腐蚀性和流动性特点，最好采用专用设备和模具。所有产品须根据需要加入不同种类和数量的助剂；

2. because of its corrosive and fluidity characteristics, it is better to use special equipment and mould. All products should be added different types and quantities of auxiliaries as required.

3．极易分解，在200度温度下与钢.铜接触更易分解，分解时逸出腐蚀.刺激性气体.成型温度范围小；

3., it is easy to decompose and contact with steel and copper at 200 degree temperature.

4．采用螺杆式注射机喷嘴时，孔径宜大，以防死角滞料.好不带镶件，如有镶件应预热。

4. when using the screw injector nozzle, the aperture should be large enough to avoid dead angle.

PVC（聚氯乙烯）是一种阻燃，化学稳定性好，只产生低张裂内力的材料。同时其材料特性还包括高强度，高刚度和高硬度，工作温度范围从零下15度到60度，可粘接，可焊接。

PVC (PVC) is a flame retardant, chemical stability, only produces low tensile crack internal force material. At the same time, its material properties include high strength, high rigidity and high hardness. The working temperature range is from 15 degrees below zero to 60 degrees. It can be glued and welded.

PVC主要特性：耐腐蚀强：最适用于化学工业之防蚀性设备。加工容易：切断、焊接、弯曲均极简易。高强度，高刚度和高硬度；良好的电气绝缘性；化学稳定性好；可自熄灭；低吸水性；易粘接，易油漆。价格低廉。

PVC main features: strong corrosion resistance: most suitable for chemical industry anti-corrosion equipment. Easy processing: cutting, welding and bending are very simple. High strength, high rigidity and high hardness; good electrical insulation; good chemical stability; self extinguishing; low water absorbency; easy bonding and easy to paint. The price is low.

PVC应用领域：酸验制造塔，海水浓缩槽，照片冲洗用具，电镀槽，电池箱，电表板，音响座上盖，收音机底版，各种电气绝缘用板，水泥槽内衬，机挡风板，排气导气管工程工程，文具，建材等。

PVC application fields: acid test tower, seawater concentration tank, photo flushing utensil, electroplating tank, battery box, electric meter board, sound seat cover, radio base plate, various electrical insulation board, cement slot lining, machine windshield, exhaust air pipe engineering, stationery, building materials and so on.