1. Formula 1. In order to become chlorinated polyvinyl chloride plastic (PVC-C) hot water pipes and electric power, cable buried pipes, why add chlorinated polyvinyl chloride (CPVC) in different parts? This is because chlorinated polyvinyl chloride (...

As a material with the reputation of "Plastic King", what are the advantages and disadvantages of polytetrafluoroethylene (PTFE)? Let us understand together.   advantage   High temperature resistance-the working temperature can reach 250℃. Low temper...

1. What is the nominal pressure PN (MPa)?  The reference value related to the pressure resistance of piping system components refers to the design given pressure related to the mechanical strength of the piping component.  The nominal pressure is gen...

Valves are pipeline accessories used to open and close pipelines, control flow, adjust and control the parameters (temperature, pressure and flow) of the conveying medium.   Basic terminology 1. Strength performance   The strength performance of the ...

Under normal circumstances, if it is not tightly closed, first confirm whether the valve is closed in place. If it is closed in place, there is still leakage and cannot be sealed, then check the sealing surface. Some valves have detachable seals, so ...

1. Analysis of the causes of cracking of injection molded products Cracking, including filament cracks on the surface of the part, microcracking, whitening, cracking, and damage due to the sticking of the part, the sticking of the flow path, or the t...

1. Analysis of the causes of cracking of injection molded products Cracking, including filamentous cracks, microcracks, whitening, cracking, and trauma crisis caused by the sticking of the workpiece and the runner sticking on the surface of the part,...

NPT is a general-purpose American standard tapered pipe thread with a profile angle of 60°. The PT thread is an inch taper thread with a tooth profile angle of 55°. The most commonly used inch pipe thread in sealing is a fine thread. Because the coa...

PPH tube is β-modified for ordinary PP material, so that it has a uniform and fine β crystal structure, and has excellent chemical resistance, abrasion resistance, high temperature resistance, corrosion resistance, aging resistance and good insulati...

Corrosion has always been one of the more serious hazards of chemical equipment. If it is slightly inadvertent, it will damage the equipment and cause accidents and even disasters. According to relevant statistics, about 60% of the destruction of che...

High-temperature butterfly valves usually have electric butterfly valves and pneumatic butterfly valves. Generally, such valves have large calibers and are relatively expensive. These two types of valves have different faults and are handled differen...

Polypropylene (PP) is divided into homopolypropylene (PP-H), block (impact-resistant) copolymer polypropylene (PP-B) and random (random) copolymer polypropylene (PP-R).   1. Homopolypropylene (PP-H)v PP-H is homopolypropylene, which is what we call t...