General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 28707-2012
Scope
This standard specifies the type, parameters, requirements, test methods, inspection rules, signs, packaging and storage of disc spring hangers. This standard is applicable to the constant force disc spring support hanger and the variable force disc spring support hanger with the load axis and the center line of the rooting structure at the same center, and it is also applicable to the disc spring shock absorber.
GB/T 28707-2012 Referenced Document
GB/T 13384 General specifications for packing of mechanical and electrical product
GB/T 13452.2 Paints and varnishes.Determination of film thickness
GB/T 13912-2002 Metallic coatings--Hot dip galvanized coatings on fabricated iron and steel articles--Specifications and test methods
GB/T 14093.4-2009 Environmental technical requirements of machinery products for the industrial corrosion environments
GB/T 14436 General principles of industrial product guarantee documents
GB/T 17116.1 Pipe supports and hangers—Part 1:Technical specification*, 2018-03-15 Update
GB/T 17116.3 Pipe supports and hangers—Part 3:Middle connection attachments and building structure attachments*, 2018-03-15 Update
GB/T 197 General purpose metric screw threads—Tolerances*, 2018-03-15 Update
GB/T 2828.1-2003 Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection
GB/T 321 Preferred numbers-Series of preferred numbers
GB/T 8923-1988 Rust grades and preparation grades of steel surfaces before application of paints and related products
GB/T 8923.3 Preparation of steel substrates before application of paints and related products.Visual assessment of surface cleanliness.Part 3:Preparation grades of welds,edges and other areas with surface imperfections
GB/T 9286 Paints and varnishes—Cross-cut test*, 2021-08-20 Update
GB/T 9969 General principles for preparation of instructions for use of industrial products