1, PTFE (F4) Applicable medium: strong acid, alkali, strong oxidant, etc .; use temperature -200 ~ 180 ℃; Features: Has excellent chemical stability, high heat resistance, cold resistance; low coefficient of friction, is an excellent self-lubricating material, but the mechanical properties of low, poor mobility, thermal expansion. 2, FEP FEP (F46) Suitable medium: any organic solvent or reagent, dilute or concentrated inorganic acid, alkali, ketone, aromatics, chlorinated hydrocarbons, etc .; Operating temperature: -85 ~ 150 ℃; Features: Mechanical, electrical properties and chemical stability of the same basic F4, but the outstanding advantages of high mobility toughness, excellent weather resistance and radiation. 3, polytrifluoroethylene PCTEF (F3) Medium: a variety of organic solvents, inorganic etching solution (oxidizing acids); Operating temperature: -195 ~ 120 ℃; Features: heat resistance, electrical properties and chemical stability second only to F4, mechanical strength, creep properties, hardness better than F4. 4, polyvinylidene fluoride PVDF (F2) Suitable medium: resistant to most chemicals and solvents; Operating temperature: -70 ~ 100 ℃; Features: Tensile strength and compression strength than the F4 is good, resistant to bending, weathering, radiation resistance, light and aging, the most prominent feature is toughness, easy to shape. 5, polypropylene RPP Suitable medium: inorganic salts, inorganic acids, alkali dilute or concentrated solution; Operating temperature: -14 ~ 80 ℃; Features: One of the lightest plastics, its yield, tensile and compressive strength, hardness are superior to low pressure polyethylene, there is a very prominent rigidity; heat resistance, easy to shape, excellent inexpensive. Modified after the strike, mobility, bending modulus of elasticity increased. 6, polyolefin diameter PO Suitable medium: various concentrations of acid and alkali salts and some organic solvents; Operating temperature: -58 ~ 80 ℃; Features: It is the best anticorrosive material in the world and it has been widely used in the rotary molding of large equipment and pipe linings. 7, PVC (hard) PVC Applicable medium: water, concentrated alkali, non-oxidizing acid, chain hydrocarbons, oil and ozone; Operating temperature: 0 ~ 55 ℃; Features: High mechanical strength, excellent chemical and dielectric properties, good oil and anti-aging properties, easy fusing and adhesion, and low price. Various types of lining pipe valve with the nominal diameter of the shell and connection dimensions are the same, but the lining material according to different media, the following different lining materials can be used: modified polyolefin PO, polypropylene RPP, FEP F46 , Polytetrafluoroethylene F4, polytrifluoroethylene F3, polyvinylidene fluoride F2. ã€Print】 ã€Close】