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What is standard for angels do pvc elbows come in?

Views:10     Author:Site Editor     Publish Time: 2019-03-20      Origin:Site

pvc elbows

PVC exhaust elbow is composed of elbow and straight pipe. It is characterized in that the exhaust elbow can effectively discharge the exhaust gas inhaled into the hot flue, not only does it not produce negative pressure in the room, but also can induce air and improve the environment. The exhaust elbow can effectively exclude the gas, and the PVC exhaust elbow is made of PVC material.


PVC elbow is a joint connecting PVC pipe, usually 90 degrees and 45 degrees. Insert two pipes into the joint with angle. This joint is called elbow, and if it does not change the angle of the joint, it is called direct. Changing the angle is called elbow.


PVC elbow material is PVC, PVC material, PVC, it is the world's largest production of plastic products, cheap, widely used, PVC resin is white or light yellow powder, can not be used alone, must be modified. PVC is amorphous powder with low branching degree and poor stability to light and heat. Different additives can be added according to different uses, and PVC plastics exhibit different physical and mechanical properties. A variety of hard, soft and transparent products can be made by adding a suitable amount of plasticizer into PVC resin.


PVC can be divided into soft PVC and hard PVC. Hard PVC accounts for about 2/3 of the market and soft PVC accounts for 1/3. Soft PVC is commonly used in floors, ceilings and leather surface, but because soft PVC contains softeners (this is also the difference between soft PVC and hard PVC), easy to become brittle, difficult to preserve, so its use is limited. Rigid PVC does not contain softeners, so it is flexible, easy to form, not easy to brittle, non-toxic, pollution-free, long-term preservation.


The PVC pipe elbow tees on the market can be said to be dazzling, the price is far from the same, how to choose the right elbow tees, how to identify the advantages and disadvantages of elbow tees? I believe many customers will have such a question, next to tell you how to select PVC elbow.


How to choose PVC pipe fittings elbow three links:

1) first determine whether the controlled medium is oil or water.

2) calculate the flow rate of the controlled medium m3/h.

3) according to the controlled medium and its designed flow, we select the caliber of the three way thermostat valve.


Causes for wear of PVC pipe elbow three way:

The PVC elbow bend of the pneumatic main pipe is the most easily worn. According to statistics, the service life of stainless steel elbow is 500-2000 times lower than that of straight pipe.


These data can be used to approximate the wear of right-angle elbows with an impact angle of 45 degrees at low weight concentrations. The strong wear of the elbow depends on the hydrodynamic characteristics of the powder flow along the curved pipe. Generally speaking, the wear of elbows is related to the speed of conveying air, the abrasive properties and particle size composition of conveyed materials, concentration, the material quality of the elbows themselves and the geometric size of the corners. The relationship between the wear rate of steel sheets and the impact angle of air flow with steel chips and the angle they encounter.

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