Corrugated pipe,Double-walled PE pipe,Corrugated PE pipe: Rothengaran parseh is the biggest manufacturer of double-wall corrugated pipes which are produced and supplied inorder to sewage and industerial urbun sewage , drainage and transfer fluid . corrugated PE pipes have an inner and outer layers , the outer layer is called profile pipe, which had totally been smooth until the fluid could move faster from the inner pipe. corrugated PE pipes can produce with different inner and outer color layers.these colors change during production according to add masterpatch that is usually less than 3% from primary materials.the outer color of these pipes is usually black which has more resistance to UV and don't need to add Anti-UV. The light colors are elected in an inner layer of low-sized pipes , if there's hole or scratch in , it's able to distinguish. the inner color is yellow in our country. One of the physical properties of these kind of pipes is the high flexibility,that tolerate upper external pressure. if compaction around the tube is high after installation and run,the huge part of this pressure will be transfer to soil and the pipe will tolerate less pressure while external pressure is on the concrete tube,totally. so in this conditions concrete tubes should have higher ressistance than double-wall PE pipes. Rothengaran's double-Wall corrugated pipe is designed with out pressure networks and their maximum pressure design is 1/5 . double-wall corrugated pipes, in comparison single-wall pipes has lower weight and more annular ressistance and suitable for sewage and drainage systems. Corrugated pipes or Double-Wall polyethylene pipes include 16 , 31.5 and 64 Kilo Newton pressures and they are produced in 6 and 12 meter branches. PE80 materials or PE100 materials are usually used for corrugated pipe production. Results show that management of surface drainage depend on the best technology. HDPE polyethylene pipes which are made of high density materials are produced to handle wastewater and surface water. HDPE pipe is reliable and affordable and is perfect solution for long-term drainage needs. Double-walled PE pipes are produced just corrugated for 110 to 1000 mm in different annular pressure. Material which used for these pipes is HDPE one . Inner layer is colorful to possible and videography and the external layer is produced and supplied black,for it's stamina against sun radiation tolerance and UV-rays. Double-wall corrugated pipes are produced with coupler and washer in 2 m branches, these kind of pipes are also produced to customer's request in 12m branches . please visit our website: https://www.rothengaran.com or contact by this number : +982632701094