1 Scope
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)
GB/T 2100-1980 Stainless Acid-resistant Steel Castings - Specifications
GB/T 2828-1987 Sampling Procedures and Tables for Lot-by-lot Inspection by Attributes (Apply to Inspection of Successive Lots or Batches)
GB/T 3091-1993 Galvanized Welded Steel Pipe for Low Pressure Service (neq ISO 65:1981)
GB/T 3092-1993 Welded Steel Pipe for Low Pressure Service
GB/T 3098.1-2000 Mechanical Properties of Fasteners - Bolts, Screws and Studs (idt ISO 898-1:1999)
GB/T 3098.2-2000 Mechanical Properties of Fasteners - Nuts - Coarse Thread (idt ISO 898-2:1992)
GB/T 3512-1983 Rubber Vulcanized - Accelerated Ageing or Heat-resistance Test - Air-oven Method
GB/T 6177.1-2000 Hexagon Nuts with Flange (eqv ISO 4161:1999)
GB/T 7307-1987 Pipe Threads Where Pressure-tight Joints Are not Made on the Threads (eqv ISO 228-1:1982)
GB/T 8163-1999 Seamless Steel Tubes for Liquid Service (neq ISO 559:1991)
GB/T 8259-1987 Specification for Flexible Coupling of Housing
GB/T 8262-1987 Bolts, Round Head with Oval Neck
GB/T 11352-1989 Carbon Steel Castings for General Engineering (neq ISO 3755:1975)
GB/T 13793-1992 Longitudinal Electric Resistance Welded Steel Tubes
GB/T 14976-1994 Stainless Steel Seamless Pipes for Fluid Transport
GB/T 17219-1998 Standard for Safety Evaluation of Equipment and Protective Materials in Drinking Water System
HG/T 3091-1997 Rubber Material for Joint Rings Used in Water Supply and Drainage Pipelines
3 Product Model and Basic Dimension
3.1 Model
Foreword I
1 Scope
2 Normative References
3 Product Model and Basic Dimension
4 Requirements
5 Inspection Rules
6 Marking, Packaging, Transportation and Storage
