PTFE lined pipe, pipe fittings, all current pipelineanticorrosion pipeline in the corrosion resistant pipe. In addition to melt
Alkali metal fluoride, chlorine and three fluoride into almostany kind, can resist acid, alkali, any salt concentration,
Corrosion oxidation agent, organic solvents and othercorrosive chemical medium, can be in -193 ℃ - +250 ℃
Under normal operation, and maintain the long-term agingperformance. Housing is a seamless steel pipe, weldedflange end (or live
Tao Falan) Nene PTFE lined pipe.
☆ ☆ PTFE production process of PTFE pipe fittings
The first class: PTFE liner pipe and tube fittings --commonly known as the pine pipe, pipe fittings
Thin film PTFE bar turning into the process, windingsintering. Suitable for conveying pipeline pressure, positive pressure (such as waste disposal pipes), should not be used for pipeline load (such as pump inlet, outlet and adrop or sudden cooling can produce negative pressurepipeline).
Operating temperature: -40-180 º C
The use of pressure: 1.6MPa
Second categories: PTFE locking liner pipe and tube fittings -- commonly known as inner liner, fitting tightlywrapped around the wire
Manufacturing process: first the plurality of layers of PTFEthin film winding in the mold, then the steel wires (Ø 0.5-1mm) spirally wound on the PTFE film, after the wirewinding outside several layers of PTFE thin, finally placed in the furnace winding forming. PTFE lined pipe, this process of making a smooth inner wall, outer wall of thesteel volume and elastic force, forming a helical line ripple.It will be lined steel pipe, and in the PTFE liner pipe, and full of the filling resin in PTFE liner pipe outer wall and the gap between the steel tube (discharge the residual air). The filled resin and steel pipes are tightly bonded together. At the same time, it can be tightly wrapped on the outer wall ofPTFE tube spiral. Filled resin after curing, forms a spiral corrugated meshed with the lining wall corrugation. This structure, with similar to the nuts and bolts. On one hand it can make PTFE lining of thermal expansion and contractioncan be limited and effective compensation; on the other hand, the wire stiffness significantly improve PTFE liningtolerance of negative pressure.
Operating temperature: -50-180 º C
Working pressure: 0.5-1.6MPa
Third categories: PTFE enhanced lined pipe
At present, domestic push (squeeze) maximum pressure PTFE pipe diameter 200mm, diameter of only 200mm iswrapped around the wire PTFE liner pipe dream. In order to solve the DN25-500mm liner pipe and pipe fittings positive,negative pressure problem, we adopt the following lining process in PTFE: loose liner tube, setting out the PTFE according to a certain distance of the metal support ring (Ø6-16mm), made of corrugated wall, a fixed supporting ring;on the other hand, the PTFE lining of thermal expansion and contraction are better compensation, the tube has good resistance to positive, negative pressure capacity.
Operating temperature: -100-180 º C
The use of pressure: -0.09-1.6MPa
Fourth categories: PTFE push (squeeze) pressure pipelocking liner -- commonly known as push (push) pressurelined pipe
Manufacturing process: first, use imported PTFE powder,push (squeeze) pressed into the pipe, and then it will beforced to pull into a seamless steel pipe (tube diameterslightly larger than the pipe diameter 1.5-2mm), forming a seamless lining. In order to eliminate the pressure, it will beplaced in the furnace, heating to 180 º C constant temperature treatment, so as to adapt to the use in 180 º C below the temperature. At the same time, push (squeeze) the axial tensile strength of pressure pipe is obviously better than winding. Positive, negative pressure resistance of the pipeline has the ideal.
Operating temperature: -100-180 º C
Pressure: -0.09-1.6MPa
The pipe fittings are made of fluorine plastic (PFA, PVDF,FEP and PTFE) as material, the molded lining thickness, 3-4.5mm, has excellent resistance to positive, negative pressure capacity.
Operating temperature: -100-180 º C (PFA)
-100-160 º C (FEP)
-100-120 º C (PVDF)
The use of pressure: -0.09-1.6MPa
The company through long-term research, the F4 pipe lining for continuous improvement, in the F4 lining windingprocess, the stainless steel wire is introduced into the F4thin layer, is firmly in control of the overall F4 lining free expansion, the expansion and contraction reduced toconsistent with the steel body shell, and eliminates the influence of cold flow properties. Strengthen the steel liner,the F4 pipe lining service life have been greatly improved,solve the customer use due to temperature changes,different material thermal expansion coefficient difference caused by heat expansion of lining F4. At the same time,my company pioneered the FEP and PTFE composite lining of anti negative pressure pipeline in the same industry, F4lining and steel by F46 post transition bonded on the inner wall of steel pipe, completely solve the problem of the original F4 liner pipe anti pressure ability is poor, and a leading position in the world. It is below 250 °, any strong corrosive chemical medium and the cold and hot in the use of long-term stability.
