Heat-Shrinkable Cross-Linked Polyolefin Coatings for Steel Water Pipe and Fittings
|Publication Date:||24 January 2015|
This standard describes the material, application, and field-procedure requirements for protective exterior coatings consisting of heat-shrinkable cross-linked polyolefin coatings. ANSI/AWWA C216 also describes the application of protective exterior coatings to special sections, connections, and fittings to be used in underground and underwater steel water pipelines.
Heat-shrinkable cross-linked polyolefin coatings may be field or shop applied as provided in this standard. This standard describes only heat-shrinkable coatings that consist of a cross-linked polyolefin backing that has been coated with an adhesive. These coatings are referred to as heat-shrinkable coatings throughout the remainder of this standard.
Conditions not discussed in this standard. This standard does not discuss the additional materials and procedures that may be required for severe conditions, such as those encountered during construction of some underwater lines, casing pipe, river crossings, and lines in exceptionally rocky areas. Also, applications such as extensive shop or field coating of steel pipe can exist that indicate a possible modification to the standard material may need to be considered. Under these conditions, the manufacturer should be consulted for specific recommendations for use of heat-shrinkable coatings in these specialized applications.
Maximum temperature. AWWA pipe coating standards are intended to apply to potable water service. The maximum service temperature of this coating system is based on the maximum service temperature of potable water. The purchaser shall consult the heat-shrinkable coating manufacturer for conditions and limitations.
The purpose of this standard is to provide the minimum requirements for heat-shrinkable coatings, including material, application, inspection, testing, marking, and packaging.