Calpipe Industries
Calpipe Industries is a leading conduit manufacturer. Calbrite - our stainless steel division - has the industry's broadest and deepest product offering for stainless steel conduit systems. We also offer GRC, EMT, and PVC-coated conduit and fittings. All products comply with industry standards established by Underwriters' Laboratories (UL), ASTM, ANSI, NEMA, and other agencies.
Wheatland Tube Company 
One of the world's leading manufacturers of continuous weld (CW) and electric resistance welded (ERW) pipe. Subsidiary of 128-year-old John Maneely Company, seven facilities manufacture pipe, tubing, fittings per ASTM, ANSI, UL, NEC, Federal Specifications. Wheatland specializes manufacturing the full assortment of rigid metal conduit in compliance with required specifications.
4specs Discussion Forum - Great place to ask questions about specifications, products and technical data. Free - no registration required to read or post (subject to moderation).
See also:
23 0520 - Hangers and Supports
23 0560 - Signs and Duct Identification
26 0551 - Conduit and Flex Conduit
26 0553 - Conductors and Cables
26 0555 - Cable Trays
26 0570 - Wiring Devices
Calpipe Industries
Calpipe Industries is a leading conduit manufacturer. Calbrite - our stainless steel division - has the industry's broadest and deepest product offering for stainless steel conduit systems. We also offer GRC, EMT, and PVC-coated conduit and fittings. All products comply with industry standards established by Underwriters' Laboratories (UL), ASTM, ANSI, NEMA, and other agencies.
Wheatland Tube Company
One of the world's leading manufacturers of continuous weld (CW) and electric resistance welded (ERW) pipe. Subsidiary of 128-year-old John Maneely Company, seven facilities manufacture pipe, tubing, fittings per ASTM, ANSI, UL, NEC, Federal Specifications. Wheatland specializes manufacturing the full assortment of rigid metal conduit in compliance with required specifications.