As one of the products of technological development, PVC pipes are within reach of everyday life. It is also very common because it has many advantages to ensure a firm connection of the pipes. With its light weight, corrosion resistance, high compressive strength, safety and convenience, it has been well received by the engineering community. It is the material of choice for pipelines, but our average person will certainly not know how to choose good quality PVC pipe coupling and pipes when selecting. Next, let's talk about how to judge the quality of them.