Conduits and fittings for electrical installation; rigid non-flame propagating insulating conduits and fittings, plain couplers and bends for light pressure strength
电气安装用导管和配件；用于光压力强度的刚性非火焰传播绝缘导管和配件、普通耦合器和弯管

1979-10-01

Conduits and fittings for electrical installation; rigid non-flame propagating insulating conduits and fittings; plain conduits with coupler and bends with coupler for medium and heavy pressure strength
电气安装用导管和配件；刚性非火焰传播绝缘导管和配件；用于中压和高压强度的带耦合器的平导管和带耦合器的弯管

1981-03-01

Non-metallic conduit fittings for electrical installations-Specification for rigid conduits, fittings and boxes of insulating material
电气装置用非金属导管配件

2010-03-31

Selection and Installation Guidelines for Fittings for Use with Non-Flexible Metallic Conduit or Tubing (Rigid Metal Conduit, Intermediate Metal Conduit, and Electrical Metallic Tubing)
非柔性金属导管或管道（刚性金属导管、中间金属导管和电气金属导管）用配件的选择和安装指南

2021-09-01