An advanced manufacturing technology in Europe to create a reliable production process of constant Seoul heating pipe industry with professional skills in the field horizontal pipe industry, the mature European technology introduction and application, so that the quality of constant Seoul warm the pipe reaches the Spanish AENOR, German SKZ, France CSTB, Britain and Poland PZH WRASS quality certification standards. Second, strict quality control and incoming inspection of raw materials, merged into an effective quality control? Hang Seoul warm with a full pipe testing equipment, and in line with European standards laboratory. Each volume of pipe, both online testing, to achieve a 100% inspection, never let unqualified products out of the factory. (1) On-line production, the inner tube filled with 6 kg of sustained pressure test; (2) the production end of the sample is applied to 40 kg of continued internal hydrostatic pressure test on the device; (3) the production line imported equipment dynamic monitoring of weld quality . ? And constant Seoul heating pipe industry has improved the incoming inspection mechanism, always shut the unqualified raw materials to ensure the constant Seoul warm plastic pipe materials reliability, for quality control from the source. Third, the constant double cross-linking Seoul warm plastic composite pipe butt weld advantage of the structure layer: PEXb-AL-PEXb, inner and outer layers of PEX-b are imported materials, is all the pipes in the best performance. 1. The temperature is reinforced plastic composite pipe, inner and outer layers are used in Germany silon company silane crosslinked polyethylene (PEX-b), a stable heat resistance and mechanical strength, and has a uniform degree of crosslinking. This kinds of imported composite materials made of plastic pipe, plastic layers alternating hot and cold water use, the shrinkage factor is almost zero, effectively avoid the leakage of water due to thermal expansion and contraction between the resulting problems and copper fittings. 2. Europe advanced butt welding technology to ensure superb stability of product quality. Hang Seoul warm XPAP butt welding aluminum plastic composite pipe intermediate layer than lap welding of thick plastic composite pipe, using automatic laser butt welding technology, and ultrasonic flaw detection, to ensure 100% complete welding welding real, not Weld or weld phenomenon, the use of an aluminum layer between the inner and outer layer PEX-b high-temperature adhesive bonding, once extrusion molding. General domestic pipeline, low prices, the degree of crosslinking is uneven, alternating hot and cold shrink process seriously. Can cause joint leakage. Of particular concern is the uneven degree of crosslinking can also cause internal stresses caused by uneven curved parts The inner plastic cracking, so there is a potential to warm the engineering quality problems. 3, constant Seoul warm double cross-linked plastic composite pipe Features: A, high temperature resistance, corrosion resistance, impact resistance, resistance to cracking; B, strong plastic deformation, can be bent without rebound; C, light weight, easy handling easy storage; D, good electromagnetic shielding, flame, thermal insulation properties; E, smooth wall, not impede water flow, no scaling; F, the service life of more than 50 years, the life of the building may be the same; G, each volume 200M, length can be produced according to customer demand. Fourth, the extensive use of constant Seoul warm XPAP plastic composite pipe is not only the best for the water to warm heating pipes, also radiator heating systems using the best octopus connecting pipe, low temperature and high temperature performance also makes constant Seoul Warm double-cross-linked plastic composite pipe become solar domestic hot water pipes and pipe the best option. Hang Seoul warm plastic composite pipe combines the advantages of metal pipes and plastic pipes, while striking out their shortcomings. Reasonable structure, excellent physical and chemical properties, high technology content, economical, clean and extremely convenient health, installation and construction, and lower total cost.