ATA Pipes Pipeline ISO HDPE Series

Pressure Ratings are calculated using a 1,25 design coefficient ( C ) for MRS at 20 C as listed in PPI TR4- for PE100 materials. Pressure ratings are based on water application . Temperature, chemical, and Environmental use considerations may require use of additional design coefficients.

This product flyer is intended for reference purposes. It should not be used in place of the advice from a licensed Professional Engineer. Nominal pressure (PN) is based on C = 1,25 and an operating temperature of °20C. Weight is calculated using DN and Minimum wall thickness for use in estimating fluid flow. Actual ID will vary. When designing components to fit the pipe ID, refer to pipe.

dimensions and tolerances in the applicable pipe manufacturing specification. To obtain pressure in psi, multiply bar by 1( 14.5 bar ≈ 14.5 psi)

Jointing Methods of Polyethylene Pipes

Compression fittings

For small bore pipe connections up to size 125MM OD, compression type joints are satisfactory. The installation process started with the cutting of pipe ends square or 90º in relation to its axis. Fit the collar and clinching ring into the pipe and place the rubber O-ring at the tip of the pipe. Then push the body of the fitting until the pipe ends reaches its full stop. Slide the clinching ring and Collar(Nut) until it catches the fitting and tight fully using a belt or chain wrench.

Flange Adaptor

This is another type of conventional mechanical jointing. A PE Flange adaptor (Stubend) is butt welded to the pipe with the loose steel backing flange inserted inside. A standard number of bolts will be fitted to tighten the connection. This type of connection is practical for application which requires easy serviceability in the future.

Butt Fusion Welding

The process starts by cutting the pipe ends straight and square to the axis and cleaned carefully by an electric planer. The pipes and fittings are held tight and pressed against a coated heating plate. As soon as the heating time and the required bead are reached, the heating plate is quickly withdrawn from the weld faces and the connection are pressed together to form a permanent joint.

Electrofusion Welding

This is an easy system for jointing pipes and fittings of PE. A pre-installed resistance wires are embedded in the inside surface of the electrofusion coupling. When the pipes or fittings are inserted in the coupling and the wires are connected to the welding unit, the contact surfaces become warm and consequently melt into each other until it forms a rigid and durable joint. A welding unit is available for this procedure which operates the timing automatically. This makes the whole operation very easy and practical especially in narrow and tight installations.