The trench excavation of conventional pipeline installations only requires that the pipeline be placed in the trench and can be sealed. When the original soil layer is not loosened, it is not necessary to pressurize the cushion. General PVC pipe bran...

The connection method of PVC pipe mainly includes three kinds of sealant, bonding and flange connection. Pipes with diameters equal to or greater than 100 mm generally use aprons; pipes with diameters less than 100 mm generally use adhesive joints, a...

01. Material characteristics:PVC is polymerized by vinyl chloride monomer (VCM). PVC material has the characteristics of non-toxic, anti-aging, acid and alkali resistance, so it is very suitable for use in chemical pipelines. . The mixture composed o...

PVC drainage pipes include PVC-U drainage pipes for construction, PVC-U (PVC ribbed) drainage pipes for underground use, and PVC-U winding pipes. PVC-U drainage pipe is a series of drainage pipe products with mature technology, which has been widely ...

Under normal circumstances, industrial valves are not subjected to a strength test during use, but the valve body and bonnet or the valve body and bonnet damaged by corrosion should be subjected to a strength test after repair. For safety valves, the...

01 Definition of plasticPlastic is a polymer organic material with resin as the main component, molded into a certain shape at a certain temperature and pressure, and capable of maintaining a predetermined shape at room temperature. Resin refers to a...

PP (polypropylene) PP plastic chemical name: polypropylene, English name: olypropylene (PP for short), specific gravity: 0.9-0.91 g/cm3, molding shrinkage: 1.0-2.5%, molding temperature: 160-220℃. Features: non-toxic, odorless, low density, strength...

Precautions ●When the ball valve is closed, there is still pressurized fluid inside the valve body. ●Before servicing the ball valve, relieve the pipeline pressure and keep the valve in the open position. ●Before repairing the ball valve, disconnec...

CPVC resin is made by chlorination modification of polyvinyl chloride (PVC) resin and is a new type of engineering plastic. The product is white or light yellow odorless, odorless, non-toxic loose particles or powder. After the PVC resin is chlorinat...

Polypropylene (PP) injection molding process PP is commonly referred to as polypropylene, because of its good anti-breaking performance, it is also called "100% plastic". PP is a semi-transparent, semi-crystalline thermoplastic with high strength, go...

PP (polypropylene) PP plastic chemical name: polypropylene, English name: olypropylene (abbreviation PP), specific gravity: 0.9-0.91 g / cubic centimeter, mold shrinkage: 1.0-2.5%, molding temperature: 160-220 °C.Features: Non-toxic, odorless, low de...