Specifying butt welding of polyethylene pipe systems. Measurement and numerical simulation article pdf available in journal of pressure vessel technology 1414 april 2019 with 565 reads how we measure reads. The procedure specifications listed below are the results of research. This wps shall be used in conjunction with the general welding standards gws and welding fabrication procedure wfp sections and criteria for joint details, repairs, nde, inspection, etc. As pipe welding is so difficult, welders who excel at this skill tend to earn higher salaries than those employed to use other welding techniques. Weld temperature and machine speed shall be varied according to ambient conditions in order to maintain and demonstrate a consistent acceptable weld. Developing a procedure for welding thermoplastic seawater piping. Butt fusion is the most important and widely used method of connection for hdpe. Pe pipe joining procedures 327 chapter 9 pe pipe joining procedures introduction an integral part of any pipe system is the method used to join the system components.
Weld after backfill is a sequence used to improve overall installation rate for steel pipe. After the pipe has been joined, fill it with water, carefully bleed off any trapped air. Introduction this method statement covers the procedure involved in handling and installation of underground grpfrp piping in trench. Extrusion welding or hot air welding is not recommended for. Intelligent welder series iws are plc based hydraulic hdpe pipe. Butt fusion joining procedure and qualification guide technical. The most common welding method used today is the joining of hdpe pipe and fittings by butt welding method. The distinctive green stripe on the pipe is your assurance of the best in quality and service from a leader in plastic drainage products.
Like many welding and joining methods, the joints created by efw can. Plastic pipe, qualifying joining procedures of the c. The apparatus shall be equipped with gauges to monitor weld temperature. This standard is developed for the benefit of countries without a national standard or technical specification for butt fusion procedures. Welding procedure specification wps may be generated by an authorized person i. Welding hdpe, or highdensity polyethylene, is a normal procedure for joining lengths of pipe together, whether it be for industrial or home use. The metal end is available with a bevel for butt welding, with male or. With the increasing use of polyethylene pe pipes of larger diameters and wall thickness there is a need for this international standard detailing the three most commonly used butt fusion procedures. Each welding procedure specification shall include applicable essential variables. Welding the root pass before beginning to weld the pipe, the procedure should be checked to assure that the correct electrode is being used. Install the pipe according to approved shop drawing. Hdpe pipe hdpe 100 pipes and polyethylene piping systems. Electrofusion welding method statement water management solutions. Lanl engineering standards manual pd342 chapter 17 pressure safety section d20b31.
As pipes are carried in coils on site, pipe must be checked for out of roundness ovality. Canadian regulations when used to join uponor infra polyethylene gas pipe and fittings, uponor infra fusion joining procedures are qualified in accordance with canadian standards association regulations. The installed pipe shall be inspected by the consultant. This superior make hdpe pipe welding machine is fabricated using the finest raw materials. Installation method statement of hdpe piping method. This technical specification sets out the requirements for the fabrication and welding of thermoplastics materials that are or are intended to be corporation assets. Pipes made from materials other than polyethylene can.
One of the benefits of welding hdpe plastics in smaller applications such as you might find in home plumbing systems is that no weld. Hdpe may be joined by mechanical fittings, but may not be buried. Generic butt fsion joining procedure for field joining of. Specifying butt welding of polyethylene pipe systems june 2009. Pop003 references the iso 27 standard plastics pipes and fittings. Extrusion welding or hot air welding is not recommended for pressure applications. Snap this tag download the redlaserbarcode scanner and qr code reader on. Hdpe pipe jointing electrofusion jointing of pe pipes and fittings for pressure applications pop001. Hdpe may also be joined to other materials by means of compression fittings, flanges, or other types of manufactured transition fittings for example fusion by. Plastic pipe welding machine hdpe pipe welding machine. If specified by the engineer, pressure testing may be conducted prior to pipe installation. Useful links for hdpe pipe installers acutech piping. Chapter 9 pe pipe joining procedures plastics pipe institute. Welding procedure specifications submitted for acceptance should cover as a minimum the items specified in appendix d of csa standard w47.
The welding consumable should be selected to correctly match or overmatch the strength of the pipe. Hdpe fusion procedures august, 2010 roth 6 introduction hdpe pipe or fittings are joined to each other by heat fusion. This information can be downloaded to a computer for documentation and. Rerounding clamps for pipe sizes 63180 can be used for correct assembly and alignment of pipe. A method for mechanical property assessment across butt fusion. As a result, the 6g pipe welding certification is one of the most soughtafter certifications in the industry.
Pdf developing a procedure for welding thermoplastic seawater. Accordingly it is not only important that quality pipes and components are used in a piping system, but also the methodology used to join the pipes and other components. The iws performs intelligently during mirroring process which provides. The seam shall be produced by self propelled wedge welding apparatus. A thermoplastic fusion buttjoint welding procedure and inspection procedures were prepared for welding 355 mm od, 27 mm thick. For hdpe pipe welding, the mirror welding machine shall be heated by electricity since electric heating plates can maintain consistent fusion. Welding procedure specifications wps presented by john lucas welding engineer uti corporation. The most common methods of joining polyethylene pipes are the butt fusion welding.
This includes the diameter and the classification of the electrode. The joining method is connect the ends of pipes to be welded by using butt welding. After approval for installation, pipe shall be hydrostatically tested. A method for mechanical property assessment across butt fusion welded polyethylene pipes. A guide primarily for men and women working with hdpe pipe, whether in landfill gas systems, domestic water supply or otherwise. Joining of pe butt fusion and electro fusion welding. Canadian regulations when used to join uponor infra polyethylene gas pipe and fittings, uponor infra fusion joining procedures. Known for its reliable performance and durability, this hdpe pipe welding machine is offered as per the requirements of various industries. Ultrasonic imaging of electrofusion welded polyethylene pipes. Pdf developing a procedure for welding thermoplastic. Corporation process level, the project specific modification should be documented only in the project. Intelligent welder series iws are plc based hydraulic hdpe pipe jointing machine hdpe pipe welding machine butt fusion welding machine which comes with completely well. Welding joining specification thermoplastics ver1 rev5 pdf. Butt fusion welding of hdpe pipes work procedure a pipeline is as good as its weakest point.
Performance pipe fusion procedures are consistent with ppi tr33 generic butt fusion procedures and astm f2620 standard practice for heat fusion joining of polyethylene pipe and fittings. Today, more than ever, ads pipe, fittings and structures are becoming one of the preferred products throughout the stormwater drainage industry. Guidelines for welding thermoplastic materials hot gas hand and hot gas extrusion welding. This document sets out the principal requirements for equipment, jointing procedures, maintenance. Joint coating is applied, usually a shrink sleeve or mortar diaper. Nontoxic plastics are well suited for use in the food industry as packaging material, containers, bottles etc. They have been developed by members or through technical representatives of the.
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