Thetalk of the town, HDPE pipe is well-known as a flexible plastic pipemade of thermoplastic high-density polyethylene widelyused for low-temperature fluid and gas transfer. The product has been not only a long and distinguished service history for the industrial field, but alsoto every business sector since HDPE pipe is the usage to utility systemseverywhere. In the year 1953, KarlZiegler and Erhard Holzkamp discovered high-density polyethene (HDPE).
HDPE pipes were revolved from traditional pipes, such as, GRP and PVC pipes, to their extensive uses for carrying potable water, irrigation system, hazardous wastes, slurry, firewater, stormwater, etc.The strong molecular bond of HDPE pipe materials used for high-pressure pipelines is beneficial to all stakeholders interms of positive economic, social, and environmental impacts. Due to its low weight and high corrosion resistance,the HDPE pipe industry is growing tremendously. HDPE pipes can worksatisfactorily in a wide temperature range of -40C0 to +80C0. However,the use of HDPE Pipes is not suggested when the fluid temperature exceeds 500 C.
Thecharacteristics of HDPE pipes are made by theby-product of petroleum. HDPE compound, according to Thailand’s standard TIS2016-2011, compliesto 2 main suppliers, including IRPC and SCG. Manufacturers must consciouslybeware of the raisin’s price fluctuation amid an economic crisis and otheruncontrollable factors. For example, Ukraine-Russia war pushed fuel’s pricingto extremely high cost of burden for business operators all over the world.Therefore, this led to the price war, higher competition, and fewer profits. Thebest way to handle these infuriating situations is plan in prior to thecircumstance by reading through daily news and keeping in touch with insiders(suppliers).
Usually, 3-5% carbon blackis added to HDPE to make it UV resistant, which turns HDPE pipes into black incolor. Other color variants are available but usually not used frequently. Commonly found colors areblack with blue striped HDPE for water supply and black with orange stripedHDPE for conduit supply. Various additives are addedto produce the final HDPE pipe and components. HDPE pipe lengths are made byheating the HDPE resin. It is then extruded through a die, which determines thediameter of the pipelinefrom the size range of OD20mm. – 1200mm.
The Pipe wall thickness isdetermined by a combination of the die size, speed of the screw, and the speedof the haul-off tractor. Thethickness also indicates the Pressure Nominal (PN) of the level of pressure’sresistant from PN6-PN25. Moreover, HDPE pipes are grouped into PE80 and PE100.The differentiation of PE80 is a thicker pipe’s wall, meanwhile, PE100 hashigher demands for underground application due to its high density,flexibility, smooth inner surface, which leads to higher water flow rate’sefficiency. The numbers following PEindicate the minimum required strength in Bar at amazing durability of 200 C for 50 years life spancorresponding to aglobal standard of ISO-4427 and a domestic (HDPE PipeThailand) standard of TIS982-2013.The rated working pressure of HDPE pipes is determined at 200 C.
Mostimportantly, PE pipe is a role model for an environmentally friendly productthat raised interests for a rapidly growing Green Economy business around theworld. Indeed, HDPE pipe’s factories in Thailand have been more and moreestablished with an increasing competition because the simplicity of staringthe business. More than 20 brands occurred at every direction in Thailand,however, only few lifelong brands were renowned, such as SR, TAP, TGG, andWIIK. The brand “SR” or SR PE Group Company has been one of the brands thatdistributed HDPE pipes domestically and internationally. The company is alsolisted as innovative products for storm drainage pipe “PROPIPE” granted byNational Innovation of Agency (NIA). It was originated from thermoplasticpolyethylene pipe on the inner and outer surface, added with a specialfunctions of fortified V-shape galvanized steel reinforced in the middle layer.The purpose of expanding products to a more advanced technology and a moreefficient drainage pipe for usage are the company’s vision to solve flooding,drought, and deluge.
Qualityassurance system by all manufacturers is mandatory, especially among publicsectors. Following tests include pressure, oxidation, tensile, elongationtests, and so on. Easy transportation due to low-weight PE pipes, indeed,supports a rollable pipe’s length of 50 and 100 meters. Standard lengths variedfrom 6, 12, to 15 meters long. Due to its flexible shapes, HDPE pipe is verysimple to use on slope. Joining methods, on the other hand, is leak-free due tothe pipe’s seamless nature and easy installations by welding, mechanicalfittings (electrofusion welding and butt-fusion), socket fusion, andcompression fittings (locked by hands).