Essential Ancillary Materials
New Grooved Couplings: Compliant couplings matched to the pipe diameter and working pressure; preference should be given to certified products that meet national standards.
Rubber Gaskets: EPDM corrosion-resistant gaskets sized for the specific pipe diameter; they must be free of cracks and air bubbles, with elasticity meeting industry standards.
Auxiliary Consumables: Specialized lubricant (soapy water or compatible grease), anti-rust grease, and lint-free cleaning cloths.
Spare Parts: Replacement bolts and nuts of the same specifications, used to replace old fasteners that are rusted or have stripped threads.
