What is lined with PTFE stainless steel flanges?
Polytetrafluoroethylene, which has the properties of acid resistance, alkali resistance and various organic solvents, is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, the friction coefficient is very low, so it can be used as lubricant remaining, also became the ideal coating and the inner pipe easy to clean wok.Because of the special environment will cause corrosion to the metal, so through the sintering process such as flange lining the material. This is lined with PTFE flange
Stainless steel flange made of Teflon plastic layer,Benefits:1, resistance to chemical corrosion, 2, cheap, pure PTFE plastic is expensive, 3 mechanical strength is not affected, pure plastic flange less than the mechanical strength of steel.
Since it is lining PTFE, corrosion resistance enough, carbon steel is not OK, but also made of stainless steel flange do? Outside air corrosion is considered cheaper than stainless steel.
PTFE is used to protect stainless steel flanges from corrosion
PTFE lined pipe after years of actual use, directly affect the service life and stable performance is temperature, pressure, medium, high quality materials and advanced manufacturing technology is the product quality assurance of PTFE lining. Flange is a large pipe, pipe fittings of a connection, that is, in the connection where there is a wide out of the edge, surrounded by empty, two pieces of flange pairs together, fixed with screws. Stainless steel flanges are made of stainless steel.Lining PTFE pipe anti-corrosion biggest advantage:1., high temperature, {maximum use temperature of 260 degrees.2., strong acid resistance, strong alkali, {pH value between 1~14.3. excellent adhesion, {negative pressure can reach 0.09MPa, vacuum effect.4. long service life {general conditions can be used for 8 to 10 years, the general commitment for 1 years warranty.5., strong penetration resistance, {hydrofluoric acid. Chlorine, bromine, acid and other gases are very good permeability.Requirements for selection of steel pipes and flanges for lined PTFE pipes and fittings1, the national standard pipe seamless steel pipes, due process requirements, the nominal pipe lining inside effective diameter smaller than the pipe diameter, effective flow standard necessary for the designers and users of steel pipe diameter.2, the flange can be based on user needs according to the national standard of HG, GB, JB, ANSI, JIS, BS, DIN etc., can be forged, can also be determined by the contract, because the sealing process suggested the use of welding plate flange, hubbed flange. Is the plane sealing surface of the seal type, in order to facilitate the installation of pipelines, can provide users with flange ring activities.
