1: the advantage is light, not easy to break.
2: the disadvantage is not able to withstand too high temperature, by the high temperature easily decomposed deformation.
3: choose plastic cups to choose polypropylene cups, Double Wall Plastic Mug it is best to choose a transparent material, so there will not contain other too many additives and pigments, Double Wall Plastic Mug there will be no heavy metals and other harmful ingredients.
4: plastic cup toxic This argument is not very comprehensive, we do not agree with the plastic, plastic brought us a major change in life, Double Wall Plastic Mug there are too many products are plastic material, the correct understanding of plastic, not talk about color change.
Plastic bellows was first developed in the 1950s, Double Wall Plastic Mug in the last 20 years has been rapid development. Has been the application of plastic bellows, according to the production of plastic corrugated pipe used by the material can be divided into "HDPE bellows", "UPVC bellows", "PP bellows" and so on, of which PVC plastic corrugated pipe current production Big.
Plastic bellows in the structural design using a special "ring groove" type of cross-section form, this pipe design novel, reasonable structure, breaking the ordinary pipe "plate" traditional structure, so that the pipe has enough resistance and impact Strength, but also has good flexibility. Double Wall Plastic Mug According to the structure of plastic bellows, bellows can be divided into single-wall corrugated pipe and double-walled bellows. Single-walled plastic bellows is the plastic pipe inside and outside the walls are corrugated pipe, with high rigidity, can be bent, infinite package. Double-wall corrugated pipe refers to the inner wall is smooth and the outer wall has a ripple (corrugated shape can be right angle, trapezoidal, sinusoidal, etc.) plastic tube, Double Wall Plastic Mug it is by the simultaneous extrusion of the outer wall and a smooth inner wall of a sintering extrusion The In addition to its ordinary plastic with all the good corrosion resistance, high insulation, Double Wall Plastic Mug smooth inner wall, the flow resistance is small, due to the use of a special hollow ring stiffness and good strength and toughness. In the same strength, stiffness requirements, the use of double-walled corrugated tube than ordinary plastic pipe to save materials 30% -50%, technical and economic better, and easy transportation and installation, Double Wall Plastic Mug reducing the labor intensity of construction workers, but also reduced the The total investment of the project, but the curvature is small. Double Wall Plastic Mug Application of bellows: single-wall corrugated pipe can be widely used in golf courses, sports ground and other light load, etc. drainage, permeable; interior decoration wire casing; Double Wall Plastic Mug car wire casing; prestressed anchor cable casing; The Double wall corrugated pipe can be widely used in highways, Double Wall Plastic Mug slopes, golf courses and other heavy load conditions, drainage, flooding; municipal sewage; communications, power supply cable casing and other occasions.
Double-wall plastic cups and plastic inspection wells between the socket-type connection need to meet our seals. The interface of the rubber seal shall comply with the following:
1) before the interface, Double Wall Plastic Mug you should first check whether the rubber ring is intact, confirm the rubber ring placement and the socket should be inserted into the depth of the socket.
2) Before the interface, Double Wall Plastic Mug clean the inner wall of the socket and apply the lubricant (preferred silicone oil) to the inner wall of the socket and the rubber ring on the socket and then align the center axis of the socket section.
3) The interface method shall be carried out in accordance with the following procedure: DN400mm and below, the first person with a cotton yarn rope to hang the pipe is installed in the socket, Double Wall Plastic Mug another person with a long pry bar into the base, Double Wall Plastic Mug and against the end of the tube center Of the transverse baffle, and then forced the tube slowly into the pipe to be installed in the pipe to the predetermined location; DN400mm above the pipe can be pulled with two lever hoist in place.
4) When the interface is closed, Double Wall Plastic Mug the lever hoist on both sides of the pipe joint should be pulled at the same time so that the rubber seal is correctly seated and not twisted and does not fall off.