Tubing is made using the Engel method. The Engel method is a hot cross-linking process, meaning the actual cross-linking takes place during the extrusion process when the base polyethylene is above its crystal melting temperature. The Engel method provides more precise control over the deg, consistency and uniformity of cross-linking. This means the tubing is evenly cross-linked, with no weak links within its molecular chains.
ComfortPro Systems Non-Barrier Pipe, Series: 94000, 1-1/4 in Nominal, PEX A, 1-3/8 in Outside Dia, 300 ft Length, 0.153 in Wall Thickness, SDR-9, 87 psi Working, 203 deg F, Engel Process, Polyethylene, Natural, Import