China's municipal pipe shop, in which the sewage pipe and gas pipe are the two largest use of the mall.
Thus country standards in the new standard gb/t13663-2000 made a lot of corrections, rules of service pipe is not the same level of pe100 and pe80 corresponding to different stress strength, the tensile strength and remove old standard function, and increased the crack elongation (greater than 350%), which focuses on the basic of patience.
PE pipe has medium density polyethylene pipe and high density polyethylene pipe. The wall thickness is divided into sdr11 and sdr17.6 series. The former is useful for transporting gaseous gas, natural gas, liquefied petroleum gas, which is important for transporting natural gas. Compared with the steel pipe, the construction process is simple, with a certain flexibility and patience, and more importantly, it is not used as an anticorrosive treatment, which will save a lot of work. Faults is instrument as steel tube, particularly in the construction of with regard to the safe distance of thermal heating and can't naked in the sun in the air, and keen to chemicals, prevent sewage pipeline leak caused damage.
Introduction PE is polyethylene plastic, the most basic plastic, plastic bag, plastic film and so on are PE,hdpe is a crystallinity high, non-polar thermoplastic resin. The surface of the original hdpe is milky white, and it is translucent at a certain level in the thin section of the film. PE possesses excellent characteristics of most days and industrial chemicals.  of the PE pipe welding, PE pipe butt weld, the reliability of the method to supply the highest and the diameter of the range and pressure process: heating of the pipe end, use a thing, called touch under the pressure and temperature define the "mirror image". The end is touched by agile and kept under pressure during the cooling process.
PE (PE) is widely used in the field of water supply and drainage because of its high strength, high temperature resistance, corrosion resistance, non-toxic and abrasion resistance. Since it does not rust, it is the ideal pipe to replace the normal iron to the pipe.