This standard specifies the terms and definitions, classification and labeling, materials, requirements, test methods, inspection rules and markings, packaging, transportation and storage of clamped copper pipe fittings (hereinafter referred to as pipe fittings). This standard is applicable to nominal pressure PN not greater than 1.6 MPa, nominal size DN not greater than 100 mm, used to transport domestic water (cold water, hot water), drinking water, compressed air and other non-corrosive media, the medium temperature is not greater than 110 ℃ Copper pipes use clamped copper pipe fittings.
GB/T 21873-2008 Rubber seals.Joint rings for water supply,drainage and sewerage pipelines.Specification for materials
GB/T 27572-2011 Rubber seals.Joint rings for pipelines for hot-water supply up to 110 ℃.Specification for the materials
GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)
GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads Part 1:Parallel internal and taper external threads
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads Part 2:Taper internal and external threads
YS/T 649-2007 Extruded rod and bar of copper and copper alloys