(1)HG20536-1993 PTFE Lining Equipment. The structural design of carbon steel, low alloy steel chemical equipment lining (loose lining) PTFE,

 

Manufacturing, inspection and acceptance, test methods and storage, handling, transportation and installation requirements. Suitable for design temperature -20~180 ℃, design pressure ≤ 0.6MPa (gauge pressure),

 

The height or length of a single section of the equipment is ≤ 1400mm, and the diameter of the cylinder is ≤ 2000mm. It is not applicable to equipment with jacket heating, equipment with threaded connectors, equipment with direct flame heating, and equipment

 

Radiation equipment, equipment with vibration and temperature changes, vacuum equipment and equipment often handled.

 

(2)HG/T21562-1994 Lined PTFE Steel Pipe and Fittings. The size, technical conditions, inspection, marking and package of PTFE-lined steel pipes and fittings are specified.

 

transportation and storage. Suitable for design pressure ≤ 1.6MPa (gauge pressure), fluid medium temperature -20~180 ℃, carbon steel and cast steel (only for pipe fittings) as the matrix, lined with poly

 

Straight pipes and fittings of tetrafluoroethylene plastic. It is not applicable to steel pipes and fittings sprayed with PTFE, nor to lining steel pipes and fittings processed by paste method.

 

(3)HG/T21609-1996 "PTFE-rubber composite gasket for pipe flange". The types of PTFE-rubber composite gaskets for pipe flanges are specified,

 

Dimensions, nominal pressure and operating temperature and technical requirements. Suitable for corrosive media or high cleanliness requirements of the chemical, petrochemical, textile, pharmaceutical and other sectors of the protruding surface and full

 

PTFE-rubber composite gaskets for flat pipe flanges.

 

(4)HG/T2899-1997 "PTFE material nomenclature". The nomenclature of polytetrafluoroethylene is specified. Polytetrafluoroethylene suitable for dispersion or suspension polymerization production.

 

The olefin resin includes a copolymer with a mass fraction of comonomer not greater than 1% and a polytetrafluoroethylene material with additives, but does not include a polytetrafluoroethylene dispersion.

 

(5)HG/T2900-1997 "PTFE resin bulk density test method". The test method for bulk density of polytetrafluoroethylene resin is specified. applicable to the dispersion method or

 

Determination of bulk density of polytetrafluoroethylene resin produced by suspension polymerization.

 

(6)HG/T2901-1997 "polytetrafluoroethylene resin particle size test method". The test method for particle size of polytetrafluoroethylene resin is specified. Suitable for dispersion or suspension polymerization.

 

The determination of the particle size of the polytetrafluoroethylene resin produced by the joint production is expressed as the average particle size.

 

(7)HG/T2902-1997 Polytetrafluoroethylene Resin for Molding. The definition, requirements, test methods, inspection rules and standards of polytetrafluoroethylene resin for molding are specified.

 

packaging, storage and transportation. Suitable for suspension polymerization production of molding polytetrafluoroethylene resin.

 

(8)HG/T2903-1997 Fine Particle Polytetrafluoroethylene Resin for Molding. The model, requirements, test methods and inspection of fine particle polytetrafluoroethylene resin for molding are specified.

 

Rules, marking, packaging, storage and transportation. It is suitable for white powdery PTFE resin produced by suspension polymerization and crushed.

 

(9)HG/T3028-1999 "polytetrafluoroethylene resin for paste extrusion". The product type, requirements, test methods and tests of polytetrafluoroethylene resin for paste extrusion are specified.

 

Inspection rules, marks, packaging, transportation and storage. It is suitable for polytetrafluoroethylene resin for paste extrusion produced by dispersion polymerization. Not suitable for poly containing colorants, fillers

Tetrafluoroethylene resin.

 

(10)HG/T3705-2003 Metal Mesh PTFE Composite Pipe and Fittings. The product classification, requirements and testing of metal mesh PTFE composite pipes and fittings are specified.

 

Inspection methods, inspection rules and signs, packaging, transportation and storage. Suitable for composite pipes and fittings made of steel shell and PTFE lined pipe with metal mesh.

 

product. Its nominal diameter is 25~300mm, the use temperature is -20~250 ℃.

 

 

Figure 1: PTFE tube Source: Dankai

 

(11)HG/T3985-2007 PTFE Bellows Expansion Joint. The terms and definitions, classification and nomenclature, requirements,

 

Test method, test rules, marking, labeling, packaging, transportation and storage. Suitable for PTFE as the flow parts, nominal pressure is not more than 1.6MPa, nominal straight

 

Diameter 25~1000mm, medium for a variety of content of sulfuric acid, hydrochloric acid, hydrofluoric acid, benzene, alkali, aqua regia, organic solvents and reducing agent strong corrosive gases and liquids, working temperature

 

For -50~180 ℃, the expansion joint plays the role of flexible compensation to the pipeline. It is not suitable for expansion joints of molten alkali metal sodium and potassium, chlorine trifluoride and gaseous fluorine medium.

 

(12)JB/T6618-2005 "Technical Conditions for Polytetrafluoroethylene Tape for Metal Winding Pads". The scope, product classification and technical requirements of vinyl fluoride tape for metal winding mats are specified.

 

requirements, inspection methods, inspection rules, marking, packaging, transportation and storage.

 

(13)JB/T6626-1993 Teflon Braided Packing. The model, technical requirements, test methods and inspection rules of PTFE braided packing are specified.

 

capacity. Suitable for PTFE fiber, PTFE split wire, expanded PTFE tape, expanded PTFE graphite tape woven packing.

 

(14)JB/T6627-2008 "carbon (chemical) fiber impregnated PTFE woven packing". Carbon fiber, carbonized fiber type I and carbonized fiber type II impregnated polytetrafluoroethylene are specified.

 

Ethylene braided packing type classification, technical requirements, test methods, inspection rules, etc. Suitable for carbon fiber, carbonized fiber type I and carbonized fiber type II impregnated polytetrafluoroethylene

 

Ene or lube impregnated woven and molded packing.

 

(15)JB/T7898-1999 Filled PTFE Guide Soft Belt. The technical requirements, inspection rules, packaging and marking of the flexible belt filled with PTFE guide rail are specified.

 

and storage, etc. Applicable to the thickness of 0.3~3.2mm, need to reduce friction, anti-wear, anti-climbing metal cutting machine tools, instruments and other mechanical guide soft belt.

 

(16)JB/T7899-1999 "filled PTFE soft belt guide rail technical conditions". The material, design, bonding,

 

Technical requirements for processing and assembly. Soft belt guide for metal cutting machine tools and measuring instruments. The soft belt guide of other machinery should also be used.

 

(17)JB/T8560-1997 "carbon fiber/polytetrafluoroethylene mixed packing". It specifies the type of mixed braided packing of carbonized fiber, polytetrafluoroethylene wire and raw material tape,

 

Technical requirements, test methods, inspection rules, marking, packaging and storage. Suitable for mixing and weaving of carbonized fiber, PTFE wire and raw material tape and impregnating PTFE emulsion

 

Liquid or lubricating oil type sealing packing.

 

(18)JB/T10688-2006 Technical Conditions for PTFE Gaskets. The technical requirements, inspection, marking, packaging and storage of PTFE gaskets are specified. Applicable

on PTFE gasket.

 

(19)JB/T10689-2006 Technical Conditions for Expanded PTFE Sealing Tape. The terms and definitions, requirements and inspection methods of expanded polytetrafluoroethylene sealing tape are specified.

 

law, inspection rules, marking, packaging, transportation and storage. Suitable for expanded PTFE sealing tape. It was implemented on July 01, 2007.

 

(20)JC/T171.2-2008 Coated Glass Fiber Cloth Part 2: Polytetrafluoroethylene Emulsion Coated Glass Fiber Cloth. Teflon emulsion coated glass fiber cloth specified

 

Code, required test methods, inspection rules, packaging, marking, transportation and storage. Suitable for the preparation of glass fiber cloth uncoated with PTFE emulsion.

 

product. Mainly used for building membrane structure materials, non-metallic compensators, anti-sticking conveyor belts, anti-sticking heat-resistant liners, cladding cloth, etc.

 

(21)QB/T3624-1999 "PTFE pipe". Suitable for paste extrusion molding of PTFE pipe, can be used as insulation and transport fluid conduit.

 

(22)QB/T3625-1999 "PTFE sheet". Suitable for molding polytetrafluoroethylene sheet or molding, hydraulic forming blank and then turning.

 

Or rolling processing of the plate.

 

(23)QB/T3627-1999 "PTFE film". PTFE film made by turning the blank suitable for molding and re-oriented film by non-oriented film.

 

The resulting semi-oriented and oriented films were calendered.

 

(24)QB/T4008-2010 Unsintered PTFE Tape for Thread Sealing (Raw Material Tape). The use of polytetrafluoroethylene dispersion resin processing, does not contain any.

 

Product classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of PTFE unsintered tape (raw material tape) for thread sealing of any additives

 

Save. It is suitable for sealing all kinds of threaded joints, especially the raw material belt used in contact with strong oxidant, chemical corrosion and chemical flammable and explosive sealing.

 

(25)QB/T4041-2010 PTFE Bars. It specifies the model specifications, requirements, test methods, inspection rules and marks and packages of PTFE bars.

 

Loading, transportation and storage. It is suitable for processing gaskets, seals and lubricating materials working in various corrosive media, as well as electrical insulation parts used at various frequencies.

 

Filled polytetrafluoroethylene resin (can contain recycled polytetrafluoroethylene resin) by molding, paste extrusion or plunger extrusion process molding rod.

 

(26)SH3402-1996 PTFE-Coated Gaskets for Pipe Flanges. Suitable for petrochemical enterprises working temperature ≤ 150 ℃, nominal pressure ≤ 5.0MPa steel convex

 

Table top pipe flange with PTFE coated gasket.

 

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