Xuzhou, Jiangsu HDPE siphon drainage pipe white Name: siphon drainage pipe fittings, with layer drainage pipe fittings Specifications: DN56 --- DN315 advantage siphon rainwater systems * widely used in a variety of different types of building use; * suspension pipe Laying without slope; * reduced diameter pipe; * Reduce the amount of construction site; * use less material; * save installation space; * pipe has self-cleaning ability, easy to plug; * from design to simple and quick construction. Only siphon water system piping 1. horizontal trunk no waviness, rarely take up space inside the ceiling. 2. Less water bucket and riser, a riser with up to 10 water bucket, water bucket larger catchment area. 3. The minimum amount of earthwork development. The higher the relative gravity rainwater drainage system efficiency. Siphon roof rainwater drainage system is the use of the roof dedicated funnel rainwater to achieve gas-water separator. At the start due to gravity, so that rain water pipes within a vacuum, when the water pipe was pressurized fluid state, form a siphon, continuous drainage, and ultimately achieve full flow state within the storm sewer. In rainfall, due to continuous siphon effect, the entire system to quickly discharge rainwater on the roof. Siphon drainage system pressurized pipeline full flow according to the state of design, rainwater hangers can be achieved without gradient laying, when the siphon action, flow velocity is high, there is a good self-cleaning effect. HDPE siphon drainage system uses a high-density polyethylene pipe, this pipe can withstand greater impact, and will not bend and break, broken, also resistant to corrosion, its anti-extreme temperature range is large, at -30 ℃ 100 ℃, while the tube itself light weight, easy construction, can greatly improve the installation efficiency. ? Performance Review Cold Resistance HDPE HDPE pipe filled with water after a pipe is frozen, the pipeline will happen with ice elastically stretchable, once the ice melts, the pipeline can restore itself to its original state, the slightest damage will not occur. ? Qu immunity of the joints, when the settlement joint, song deflections HDPE pipe can be adjusted within a certain range of anti. ? Wear HDPE (High Density Polyethylene) pipe has a high abrasion resistance, its thick walls to provide additional protection.? Thermal expansion coefficient of temperature change will alter the physical dimensions of HDPE pipe itself, its thermal expansion and contraction obvious Pipe significantly higher than other materials, installation design must consider the possible expansion and contraction problems. ? Thermal water-temperature reaches 80 ℃ (no mechanical force case) when, HDPE pipe is still safe to use. When the temperature reaches 100 ℃, the pipe can be used in a short time. ? Against external force at room temperature, the compression performance of HDPE pipe is excellent. Under (about -40 ℃) high temperature or extreme cold conditions, the pipeline still resist external forces. ? HDPE condensation is weak heat conductor, cooling process short, the pipeline does not produce condensation. ? In the performance of HDPE pipe fire retardant material is, the pipeline fire burning not release toxic gases. ? Fastness regardless fused HDPE pipe welding or hot-melt welding connections, from the strength of the weld strength are higher than the pipe itself, the working pressure to meet the requirements. ? Noise HDPE tube is a soft material, a small modulus of elasticity E, can limit the air duct or solid carrier sound propagation. If special soundproofing requirements, through underground wall pipe, muffler pipe. Measures silencer plastic film to achieve sound insulation. ? Chemical resistance HDPE molecular structure (alkane structure) stable, chemical resistance very strong pipeline. HDPE pipes chemical resistance are summarized as follows: At room temperature, insoluble in most organic and inorganic substances (other than addition of concentrated nitric acid, and other strong oxidants concentrated *); under conditions of greater than 90 ℃, dissolved in an aliphatic, aromatic hydrocarbons and chlorinated products. ? Solar radiation UV resistant black PE pipe, anti-aging, long service life of 50 years by the addition of carbon black, HDPE pipe can resist the pipe caused by the sun's ultraviolet aging embrittlement. ? Anti-blocking wall is smooth and does not change with time, friction is small, save energy, the pressure loss of about 30% smaller than the pipe can be selected smaller than the pipe diameter. Health and good performance, no additives, no possibility of contamination of drinking water, ISO standard polyethylene material rated as 0 (lowest level), no mildew material, compared with some other commonly used plastics materials, polyethylene mold-resistant properties much higher, long-term use is not fouling. Aspects of water resistance of HDPE pipe is especially pronounced. A high displacement, anti-deposition characteristics. ? Soldering temperature can be welded polyethylene pipe, fittings and pipes into one, without the possibility of joint leakage, which will help save water, reduce operating costs and the cost of inspection, maintenance, piping can be made into any length, can be a flexible arrangement, saving fittings. Thermoplastic (sexual) material handling on with high thermal efficiency. HDPE pipe soldering temperature lower than the metal, which is about 230 ℃. Simple welding tools to complete the processing. PE pipe installation by welding or fused to form a completely closed impervious system. ? Use of light weight, ease of installation, handling, connection, convenient and reliable construction. HDPE pipe can be designed for use in drainage systems. Under pressurized conditions, the use of HDPE pipe is determined by its maximum positive and negative pressure loads. Note: HDPE pipe can be used in pressure systems can also be used in vacuum systems, as part of the pipeline siphon water system under normal operating conditions of the system in a vacuum state, and therefore the need for a negative pressure pipe testing to ensure that the negative pressure-resistant pipes performance can meet the design requirements. HDPE basic physical and chemical properties of materials as follows: Item Unit Index experimental methods melt flow index G / 10min (2.16kg) 0.10 ~ 0.15 GB / T3682 density G / cm3 0.943 ~ 0.948 GB / T1033 tensile yield strength Mpa ≥22.0 GB / T1040 breaking elongation% ≤500 GB / T1040 glass transition temperature (TG) ℃ ≤-70 MRS Mpa 8.0 / 10.0 * GB / T6