This standard describes the materials, systems, and application requirements for shop-applied extruded polyolefin coatings for the exterior of steel water pipes.
1.1.1 Extrusion types. This standard describes the following three types of coating-system applications:
Type A, crosshead-die extrusion, consists of an adhesive and an extruded polyolefin sheath. This system is limited to pipe diameters 1/2 in. through 36 in. (13 mm...