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With the advancement of science and technology, the scope of application of new materials continues to increase, while the fine chemical industry is booming, domestic production technology has also been continuously improved rapidly. However, no matter how the process is improved, the use of hydrochloric acid, sodium hydroxide, hydrogen peroxide solution, and ethanol, acetone and other high-purity chemicals are inseparable.
These chemicals usually have strong corrosive, flammable, explosive and highly toxic hazards. Therefore, the anticorrosiveness of the pipeline is required to prevent leakage of the chemical pipeline during transportation and cause safety accidents.
The traditional hard pipe pipeline construction scheme uses a double casing, that is, a pipe with PP or PVDF material inside a PVC pipe.
And most o€f the soft joints are made of PP material pipe joints插图2
PP is the abbreviation of Polypropylene. The Chinese name is polypropylene. Polypropylene has good chemical stability. Except that it can be attacked by concentrated sulfuric acid and concentrated nitric acid, it is relatively stable to various other chemical reagents, but low molecular weight aliphatic hydrocarbons, aromatics Hydrocarbons and chlorinated hydrocarbons can make polypropylene soften and swell. At the same time, its chemical stability increases with the increase of crystallinity, so polypropylene is suitable for making various chemical pipes and fittings, and has good anti-corrosion effect.
However, its shortcomings are also relatively obvious, temperature resistance difference, low temperature impact strength is low, fragile; susceptible to aging by the action of light, heat and oxygen. It is more suitable to be used as a double sleeve inner pipe, and it is often easily damaged when used at the pipe connection.
Therefore, there is an urgent demand for high-quality corrosion-resistant products on the market. Teflon is favored by the fluid industry due to its excellent corrosion resistance and chemical stability, and is regarded as an ideal material for chemical transportation systems. But how to successfully introduce Teflon to the connector is a big problem in the industry. Shanghai Weilan successfully developed the first-generation fluorine-lined connector after years of research and development based on the accumulation of its knowledge and experience.
The first generation of fluorine-lined joints is made by sintering (melting and recasting) Teflon (PFA, FEP) particles on the surface of stainless steel under high temperature heating, and then finishing the joint to obtain the finished joint product. The first-generation fluorine-lined joints have strong corrosion resistance and smooth inner walls. They provide high-quality pipe joints for the transportation of clean media, chemicals and highly corrosive fluid media, which meet the needs of most markets.
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Upgraded-fluorine-lined connector
However, the first-generation fluorine-lined joints have certain shortcomings due to process reasons, such as small diameter, affecting flow, etc., and cannot adapt to applications with higher demand. In this context, Shanghai Weilan successfully developed the second generation of fluorine-lined connectors.
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Compared with the first generation of fluorine-lined joints, it has the following advantages:
Smoother surface
Larger diameter and less flow loss
Excellent conductivity
Light weight
High face value
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Shanghai Weilan offers a variety of connection forms of fluorine-lined connectors, such as TC, flange, CAMLOCK, conversion head, etc., to meet different needs.