PVC elbow in pipe system, elbow is the pipe that changes the direction of pipeline. According to the angle, there are 45 degrees and 90 degrees 180 degrees which are most commonly used, and other abnormal angle elbows such as 60 degrees are also included according to the needs of the project. Elbows are made of cast iron, stainless steel, alloy steel, calcinable cast iron, carbon steel, non-ferrous metals and plastics. Connection with the pipe are: direct welding (the most commonly used way) flange connection, hot melt connection, electric melt connection, threaded connection and socket connection. According to the production technology, it can be divided into: welding elbow, stamping elbow, pushing elbow, casting elbow and so on. Other names: 90 degrees elbow, right angle bend, love and bend. National Standard Process Flow of Sinopec Standard Pipe Fittings Implementation Standard.

The diameter of PVC drainpipe is standard, and 4 inches is 110 pipe. They all talk about outer diameter, because this is matched with PVC fittings. Therefore, the diameter of the tube is unable to determine the thickness of the wall because it is the same. If you want to know the thickness of the pipe wall, simply take a vernier caliper to measure directly, or the diameter of the pipe minus the size of the aperture, and then divide it by 2 to get the result. As for the 4-inch pipe, the pipe wall is 3.2 mm, is produced according to national standards, also known as national standards, such as pipe wall: 2.1MM or 2.2MM, are produced according to enterprise standards, is the enterprise standard pipe, some also called rainwater pipe, distinguish drainage pipe.

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 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.