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Conduit - The Home Depot
Types of Conduit - Lowe's
同样是管子,pipe、tube、duct、hose、conduit、line的区 …
Types of Conduit - The Home Depot
Conduit at Lowes.com
Differences Between Pipe, Tube, and Conduit | United Rentals
Steel Electrical Metallic Tubing (EMT Conduit) | Wheatland Tube
Amazon.com: Conduit Tube
1/2 in. x 10 ft. Electric Metallic Tube (EMT) Conduit - The Home Depot
Electrical Conduit 101: Basics, Boxes, and Grounding - The Spruce