ERA Piping Systems,III PP Compression Fitting , PP Compression Female Thread ELBOW With ERA , PTIII004 , WRAS

Features：
The compression fittings for HDPE pipe are made by high quality PP material with UV protection, both material and fittings are approved use with drinking water.
PP Compression Fittings is fabricated and designed using premium quality basic material and progressive technology.
Our company is one of the great manufacturers from all around the world.
The high-quality material used in the product has an application in the area of water distribution, irrigation, swimming pools, and cable conduits.
Fast & Reliable Connection: Split ring opening has been optimized to make pipe insertion even easier. 
PP Compression Fittings is fabricated and designed using premium quality basic material and progressive technology.

 

Main Products：

The characteristics of pp plastic：

1, the heat resistance is very good, pp products can be used for a long time in the high temperature environment below 100 degrees, the temperature to about 150 degrees will not be obvious deformation.

2, the density is smaller, 0.81- 0.91g/ cm 3, is the smallest density of commonly used plastics.

3, pp material has good mechanical properties, high heat resistance, good chemical properties, almost no water absorption, and the vast majority of chemicals do not react, pure texture, non-toxicity, good electrical insulation.

4, if stored properly, there is no need to dry treatment.

5, melt adhesive back pressure available 5bar, color powder back pressure can be properly adjusted.

6, melting point is 160 to 175℃, decomposition temperature is 35O℃, but in the injection processing, the temperature can not be set more than 275℃, mold temperature 50 to 90℃, for the size requirements of high die temperature, core temperature is more than 5℃ lower than the cavity temperature.

7, injection pressure, the use of high injection pressure and pressure holding pressure, pressure holding pressure is about 80% of the injection pressure. At about 95% of the full stroke, the transfer of pressure, with a longer pressure holding time.

8. Injection speed, in order to reduce internal stress and deformation, high-speed injection should be selected, but if the carved surface appears light and dark stripes diffused by the gate, low speed injection and high die temperature should be used.

9. Mold. General runner 4 to 7mm, needle gate length 1 to 1.5mm, diameter can be as small as 0.7mm. The shorter the length of the edge gate, the better, is about 0.7mm, the depth is half of the wall thickness, the width is twice of the wall thickness, and with the length of the melt flow in the mold cavity gradually increases, the mold must have good exhaust, the depth of the vent hole is 0.025mm to 0.038mm, the thickness is 1.5mm, to avoid contraction marks, it is necessary to use a large and round nozzle and circular flow channel. The thickness of the stiffener should be small.

10. The viscosity of pp melt decreases obviously with the increase of shear rate, and is little affected by temperature.