GB/T 14823.1-1993 Particular specifications for metal conduits for electrical installations
This standard has been referred to and modified adoption of IEC 614-2-1 (1982) Specification for conduits for electrical installations — Part 2: Particular specifications for conduits — Section One — Metal conduits and IEC 423 (1973) Conduits for electrical purposes — Outside diameters of conduits for electrical installations and threads for conduits and fittings and its Aamendment:1978.
1 Subject content and application scope
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of plain rigid metal conduits for electrical installations (hereinafter referred to as conduits).
This standard is applicable to plain rigid metal conduits with a circular cross-section for electrical installations of circuits of 1000V and below to protect conductors or cables.
2 Normative references
GB/T 13381.1 Specification for conduits for electrical installations - General reguirements
GB 2828 Sampling procedures and tables for lot-by-lot inspection by attributes (Apply to inspection of successive lots or batches)
GB 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of stability for productive process)
GB 2102 Acceptance, packing, marking and quality certification of steel pipe
GB 3640 Plain carbon steel pipes for electric wire
GB 10623 Metallic materials - Terms of mechanical test
GB 1801 Tolerances and fits - Dimension to 500mm orifice, shaft tolerance zones and fits
GB 192 General purpose metric screw threads - Basic profile
GB 196 General purpose screw threads - Basic dimensions for diameter from 1 to 600mm
GB 197 General purpose screw threads - Tolerances and fits for diameter from 1 to 355mm
GB 3934 Gauges for general purpose screw threads
3 Terms
steel conduit
a conduit which consists of metal only
4 Classification and marking of conduits
4.1 Classification
4.1.1 Classification by mechanical properties
a. Conduits capable of withstanding very small mechanical stresses (referred to as "very light conduits");
b. Conduits capable of withstanding small mechanical stresses (referred to as "light conduits");
c. Conduits capable of withstanding medium mechanical stress (referred to as "medium conduits");
Contents
1 Subject content and application scope
2 Normative references
4 Classification and marking of conduits
5 Structure and dimensions
6 Technical requirements
7 Test methods
8 Inspection rules
9 Marking, packaging, transportation and storage
Annex A Conduit marking classification codes (Supplement)
Annex B Sampling plan and result evaluation of delivery inspection (Supplement)
Additional explanation:
