Description Polyethylene screws are produced in sizes from 1/2 or 20 mm to 5 or 125 mm. Of course, all polyethylene screw connections are produced and supplied in the same size range. Polyethylene screw three-way, like all three-way, has the use of splitting or dividing the fluid in one direction in two different directions. It is easy to use. It is easily sealed. Polyethylene welded joints are used in sizes higher than "5 or 125 mm". This pipe and fittings are mostly used in irrigation. It also uses other grades to transfer drinking water and gas. For more information, call 09339765265 Call 09123261608.