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HDPE pipe fusion. Heat fusion (sometimes called heat welding, butt welding or simply fusion) is a welding process used to join two different pieces of a thermoplastic. This process involves heating both pieces simultaneously and pressing them together. The two pieces then cool together and form a permanent bond.
It is most commonly used to join polyethylene (PE) and polypropylene (PP) pipes. Electrofusion welding is the most common welding technique for joining PE pipes. [1] Because of the consistency of the electrofusion welding process in creating strong joints, it is commonly employed for the construction and repair of gas-carrying pipelines. [2]
The built in heater coils then melt the inside of the fitting and the outside of the pipe wall, which weld together producing a very strong homogeneous joint. The assembly is then left to cool for a specified time. [1] Electrofusion welding is beneficial because it does not require the operator to use dangerous or sophisticated equipment. After ...
This is a list of welding processes, separated into their respective categories. The associated N reference numbers (second column) are specified in ISO 4063 (in the European Union published as EN ISO 4063 ). [ 1 ]
In older installations, the threaded brass pipe was similarly used and was considered superior to steel for drinking water because it was more resistant to corrosion and shed much fewer residues into the flowing water. Assembling threaded pipe is labor-intensive, and requires skill and planning to allow lengths of pipe to be screwed together in ...
Wrap the pipe with a hot towel: Soak it in hot water and wrap it around the frozen section. Apply a salt solution : Mix salt with warm water and apply it to the frozen area. Salt lowers the ...
A close nipple can only be unscrewed by gripping one threaded end with a pipe wrench which will damage the threads and necessitate replacing the nipple, or by using a specialty tool known as a nipple wrench (or known as an internal pipe wrench) which grips the inside of the pipe, leaving the threads undamaged. When the ends are of two different ...
Stay updated on the ever-changing atmospheric conditions with our comprehensive Weather category. From local forecasts to global climate patterns, we bring you the latest insights and accurate ...