(1) PVC pipe means that the main raw material for making pipe is PVC resin powder. The types of PVC pipes are generally divided by the use of pipes: drain pipes, water pipes, wire pipes, cable sheath pipes...
Because the raw material formulas are different, the pressure resistance of various types of tubes is different.
The PVC water supply pipe is matched with the water supply fittings for the water supply project of the building.
PVC drain pipe is used for sewage discharge...
Fourth, the method of distinguishing the quality of PVC pipe
(1) Look at the surface finish and whiteness first.
(2) Take the sample to fall, the person who is easy to break is generally a high-calcium product. Of course, it is ok to meet your requirements.
(3) Take the sample with the foot on the side of the pipe to see if it can crack, or the elongation at break after cracking.
(4) The weather resistance is very troublesome. The most direct way is to take a few days to get the high temperature and high light, to see the surface change rate, but it is a waste of time. Mainly look at the first three items just fine.
Hot Rolled Stainless Steel Coil
Stainless steel plate surface smooth, high plasticity, toughness and mechanical strength, acid, alkaline gas, solution and other media corrosion resistance. It is an alloy steel that does not rust easily, but not absolutely. Stainless steel plate refers to the corrosion resistance of weak medium such as atmosphere, steam and water steel plate, and acid resistant steel plate refers to the corrosion resistance of chemical etched medium such as acid, alkali, salt steel plate.
According to the structure is divided into austenitic stainless steel plate, martensitic stainless steel plate (including precipitation hardening stainless steel plate), ferritic stainless steel plate, and austenitic ferritic biphase stainless steel plate and so on four categories? According to the main chemical composition of the steel plate or some characteristic elements in the steel plate to be classified into chromium stainless steel plate, chromium nickel stainless steel plate, chromium nickel molybdenum stainless steel plate and low carbon stainless steel plate, high molybdenum stainless steel plate, high purity stainless steel plate. According to the performance characteristics and use of steel plate classification, is divided into nitric acid resistant stainless steel plate, sulfuric acid resistant stainless steel plate, pitting stainless steel plate, stress corrosion resistant stainless steel plate, high strength stainless steel plate. According to the functional characteristics of the steel plate, it is divided into low temperature stainless steel plate, no magnetic stainless steel plate, easy cutting stainless steel plate, super plastic stainless steel plate. Currently, the commonly used classification method is according to the structural characteristics of steel plate and steel plate chemical composition characteristics and the combination of the two methods. Generally divided into martensitic stainless steel plate, ferritic stainless steel plate, austenitic stainless steel plate, duplex stainless steel plate and precipitation hardening type stainless steel plate or divided into chromium stainless steel plate and nickel stainless steel plate two categories.
Typical uses: pulp and paper equipment heat exchanger, mechanical equipment, dyeing equipment, film washing equipment, pipelines, coastal area building external materials, etc.
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Shandong Xinsuju Steel Co.,Ltd. , https://www.sawlpipe.com