Hiền
0917762008- SALES@CATVANLOI.COM-Ống luồn dây điện CATVANLOI, ống luồn dây điện chuẩn
Mỹ EMT steel conduit (Electrical
Metallic Tubing), ống luồn dây điện IMC conduit/ RSC conduit (Intermediate Metal Conduit- Rigid steel conduit),
ống luồn dây điện chuẩn Nhật JISC8305 Loại E & C & G (White
steel conduit), ống thép tráng kẽm luồn dây điện chuẩn Anh
Quốc BS4568-BS31(Galvanized steel conduit)
Ống ruột gà lõi thép có bọc nhựa phi 20/D20-Water-proof Flexible Metallic Conduit (W.PFMC); Ống ruột gà lõi thép không bọc nhựa- Flexible Metallic Conduit (FMC); Ống ruột gà lõi thép luồn dây điện có bọc nhựa dày- Liquidtight Flexible Metal
Conduit (LFMC); Phụ kiện nối ống ruột gà lõi thép luồn dây điện-Flexible Conduit Connectors, Squeeze traight flexible
connectors, Combination Flexible and IMC / EMT connectors.
Ống
ruột gà
lõi thép luồn dây điện CVL-Ong ruot ga boc nhua phi
20/D20- Waterproof/Liquid tight Flexible Metallic Conduit
Steel CityR
Conduit Fittings provide
long-lasting service in commercial,industrial and residential construction. Our
fittings are manufactured within strict tolerances to maintain consistent performance.
Installers can be assured that every fitting with the Steel CityR name will
work
every time. So when you select Steel CityR Conduit
Fittings, that means fewer headaches and call-backs. Steel CityR products
symbolize the highest quality standards in manufacturing and innovative design,
with one of the most complete offerings available. Contact a T&B
distributor nearest you to select the right Steel CityR product
for your requirements.
The installation of Rigid Steel Conduit (RSC) is covered by Article 344 of the National Electrical Code® (NEC®). This article is entitled "Rigid Metal Conduit (RMC) and includes all requirements for all rigid metal conduits, including steel, stainless steel, aluminum, and red brass. Information on this STI website covers only rigid steel conduit. You will often see the following acronyms used: RSC (Rigid Steel Conduit), ERSC (Electrical Rigid Steel Conduit), or GRC (Galvanized Rigid Conduit) in place of RMC (Rigid Metal Conduit) in order to differentiate the type of metal used in the product.
Rigid steel conduit (RSC) is a listed threaded metal raceway of circular cross section with a coupling which can be either a standard straight tapped conduit coupling or the integral type. Threads on the uncoupled end are covered by industry color-coded thread protectors which protect the threads, keep them clean and sharp, and aid in trade size recognition. Rigid metal conduit is available in trade sizes 1/2 through 6. Thread protectors for trade sizes 1, 2, 3, 4, 5, and 6 are color-coded blue, trade sizes 1/2, 1 1/2, 2 1/2, 3 1/2 are black, and trade sizes 3/4 and 1-1/4 are red. The nominal finished length of RMC with couplings is 10 feet. Twenty foot lengths are available in some trade sizes.
There are different processes used to provide corrosion protection to rigid steel conduit. Rigid steel conduit can have a primary coating of zinc, a combination of zinc and organic coatings, or a nonmetallic coating (such as PVC). Supplementary coatings can be applied to all three where additional corrosion protection is needed.
Rigid steel conduit is the heaviest-weight and thickest wall conduit. Where galvanized by the hot-dip process, it has a coating of zinc on both the inside and outside. Electro-galvanized rigid conduit has a coating of zinc on the exterior only, with approved corrosion resistant organic coatings on the interior. Rigid conduit with "alternate corrosion protection coatings" generally has organic coatings on both the exterior and the interior surfaces. Galvanized rigid metal conduit (GRC) is non-combustible and can be used indoors, outdoors, underground, concealed or exposed. Rigid steel conduit with coatings that are not zinc-based may have temperature limitations which will be noted on the manufacturer's product label and may not be listed for use in environmental air spaces; consult manufacturers’ listings and markings.
Intermediate Metal Conduit — (IMC STEEL CONDUIT)
The product was developed in the 1970s. Intermediate Metal Conduit
(IMC) is a lighter-weight, thinner wall alternative to rigid steel conduit.
Covered under Article 342 in the NEC®, IMC is a listed threaded steel raceway
of circular cross section with a coupling which can be either a standard
straight-tapped conduit coupling or the integral type. Threads on the uncoupled
end are covered by industry color-coded thread protectors which protect the
threads, keep them clean and sharp, and aid in trade size recognition. IMC is
available in trade sizes 1/2 through 4. Thread protectors for trade sizes 1, 2,
3, 4, are color-coded orange; trade sizes 1/2, 1 1/2, 2 1/2, 3 1/2 are yellow;
and trade sizes 3/4 and 1 1/4 are green. The nominal finished length of IMC with
coupling is 10 feet.
IMC has a reduced wall thickness, when compared to RSC, and
weighs about one-third less than RSC. The outside has a galvanized coating for
corrosion protection and the inside has an approved organic corrosion-resistant
coating. IMC is interchangeable with galvanized rigid steel conduit. Both have
threads with a 3/4-inch per foot taper, use the same couplings and fittings;
have the same support requirements; and are permitted to be used in the same
locations.
Electrical Metallic Tubing — (EMT STEEL CONDUIT)Electrical Metallic Tubing (EMT), also commonly called thin-wall, is a listed steel raceway of circular cross section which is unthreaded, and nominally 10 feet long. Twenty foot lengths are also available. Covered by Article 358 of the NEC®, EMT is available in trade sizes 1/2 through 4. The outside is galvanized for corrosion protection and the inside has an approved corrosion resistant organic coating. EMT is installed by use of set-screw or compression-type couplings and connectors. It is permitted to have an integral coupling which is comprised of an expanded, "belled" shape of tube on one end with set screws. EMT with integral couplings is available in trade sizes 2 through 4.
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