This standard specifies the product model, basic dimensions, requirements, inspection rules, marking, packaging, transportation and storage of grooved couplings.
This standard is applicable to the grooved couplings with nominal pressure below 2.5MPa.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, parties coming to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB 191-2000 Packaging - Pictorial Marking for Handling of Goods (neq ISO 780:1997)
GB/T 528-1998 Rubber, Vulcanized or Thermoplastic - Determination of Tensile Stress-Strain Properties (eqv ISO 37:1994)
GB/T 531-1999 Rubber - Determination of Indentation Hardness by Means of Pocket Hardness Meters (idt ISO 7619:1986)
GB/T 699-1999 Quality Carbon Structural Steels
GB/T 1047-1995 Nominal Size for Pipe Components (neq ISO 6708:1980)
GB/T 1048-1990 Nominal Pressure for Pipe Components
GB/T 1348-1988 Spheroidal Graphite Iron Castings
GB/T 1682-1994 Rubber, Vulcanized - Determination of Low-temperature Brittleness (Single Test Piece Method) (eqv ISO 812:1991)
GB/T 1690-1992 Vulcanized Rubber - Resistance to Liquids - Methods of Test (neq ISO 1817:1985)
GB/T 1804-2000 Tolerance and Fitting, Limits of Deviation without Indication of Tolerance Dimensions (eqv ISO 2768-1:1989)
