This standard specifies the terms and definitions, product classification, test methods, inspection rules, marking, packaging, transportation and storage for quick adapters with U pin (hereinafter referred to as "adapter") and accessories for mine.
This standard is applicable to the adapters and accessories used in pipeline system using plain mineral oil and high-water-content hydraulic liquid as operating fluid.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest editions of the document referred to apply.
GB/T 1184-1996 Geometrical Tolerancing—Geometrical Tolerances for Features without Individual Tolerance Indications (eqv ISO 2768-2:1989)
GB/T 1804-1992 General Tolerances—Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications (Eqv ISO 2768-1:1989)
GB/T 2828.1-2003 Sampling Procedures for Inspection by Attribute—Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection (ISO 2859-1:1999, IDT)
GB/T 2829-2002 Sampling Procedures and Tables for Periodic Inspection by Attributes (Apply to Inspection of Process Stability)
MT/T 98 Inspection Specifications of Hose and Hose Kit for Powered Support
3 Terms and Definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
Quick adapter with U pin
A metallic adopter intended for connecting hose assembly or other hydraulic part with U pin to turn on or turn off operating fluid.
