China has emerged as a global manufacturing hub for UL-listed steel conduits and fittings, supplying high-quality electrical raceway solutions to markets worldwide. These manufacturers combine advanced production technology, strict quality control, and comprehensive UL certifications (UL 1, UL 6, UL 1242) to meet the demands of commercial, industrial, and infrastructure projects. The following top 10 Chinese manufacturers are recognized for their technical expertise, reliable products, and global export capabilities in steel conduit systems.
1.KALD INT'L INDUSTRY LIMITED
is a professional manufacturer, specializing in researching and manufacturing electrical tubes and associated fittings, such as EMT, IMC, BS4568, BS31,strut channel ,flexible tubes and related couplings and connectors.
Our Product:
1).Electrical conduits (UL Type)
EMT(Electrical Metallic Tubing)(UL797), IMC(Intermediate Metal Conduit)(IMC-UL1242), RMC(Rigid metal Conduit)(RMC/RSC-UL6)
Electrical Conduit (BS Type)
BS4568 GI Conduit (1970), BS31 GI Conduit (1940), Finishes: Class 3 and Class 4
2).Electrical Conduit Accessories (UL Type)
Conduit Elbow, Connectors and Coupling, One-hole strap and Two-hole Strap, Steel Coupling, Reducing Bushing, Nipples , Locknuts, Conduit Bushing, Reducing Washer, Pipe Clamps and Conduit Hanger.
Electrical Conduit Fittings (BS Type)
Malleable Iron Box (EN50086), Box Lids, Looping in Box, Dome Cover, Male Hook, Coupler, Nipple, Elbows, Bends, Tees, Rings, Male and Female Bushes, Head Plug, Reducer, Locknuts, Saddle.
3).Conduit Box (UL Type)
4*4"Square Box, 4"Octagonal Box, 4*2"Handy Box, 4-11/16*4-11/16" Square Box, And other CANADA Type Boxes.
4*2"Weatherproof Box, 4*4" weatherproof Box, 4"Round Weatherproof Box, LB, LL , LR, C, T Type Threaded or Set-Screw Conduit Body.
4). BS4662 Switch and Socket Box
3*3, 3*6, 1+1, 1+2,1+1+1, 1+1+2, Extension Box, Dry Lining Box, Surface Box
5).Flexible Conduit and Fittings
Flexible Steel Conduit, PVC Coated Flexible Conduit, Liquid Tight Conduit.
Squeeze Connectors, Liquid Tight Connectors.
6).Strut Channel and Fittings.
41*41, 41*21 Uni-strut Channel, Spring Nut, Thread Rods, Strut Clamp, Conduit Hanger, Clevis Hanger, Pipe Clamp.
2. Ningbo Smico Electric Co., Ltd.
Ningbo Smico is a trusted manufacturer of UL-certified steel conduits, EMT, and related fittings. Their product range includes threaded couplings, elbows, and connectors designed for commercial buildings and utility projects. The company is known for strict quality inspections, competitive pricing, and fast delivery, making it a preferred supplier in North America and Europe.
3. Tianjin Kelong Metal Products Co., Ltd.
Specializing in UL-approved rigid and intermediate metal conduits, Tianjin Kelong provides high-tensile steel conduits with anti-rust coatings. Their products are suitable for underground, outdoor, and industrial applications, ensuring long-term durability. The company also offers custom fabrication services to meet specific project requirements.
4. Zhejiang Tlong Electrical Co., Ltd.
Zhejiang Tlong produces UL-listed steel conduits and explosion-proof fittings, widely used in oil & gas, chemical plants, and mining industries. Their heavy-duty conduits feature excellent mechanical strength and flame resistance, complying with UL 6 and UL 1242 standards. The company is known for innovative designs and OEM/ODM support.
5. Shanghai Metal Corporation
A well-established supplier of UL-certified steel conduits and accessories, Shanghai Metal Corporation offers galvanized rigid conduits, IMC, and liquid-tight flexible metal conduits (LFMC). Their products are used in power distribution, telecommunications, and solar energy systems, with a strong presence in North American and Middle Eastern markets.
6. Hubei Chushun Metal Products Co., Ltd.
Hubei Chushun specializes in UL 6-compliant steel conduits with high-pressure resistance, ideal for industrial wiring and construction projects. Their hot-dip galvanized coatings ensure long-term corrosion protection, while their precise threading guarantees secure connections. The company also provides custom lengths and packaging options.
7. Qingdao Choho Industrial Co., Ltd.
Qingdao Choho is a key manufacturer of UL-approved steel conduits and fittings, particularly for harsh environments and marine applications. Their products undergo rigorous testing for impact resistance and weatherproofing, making them suitable for offshore platforms and coastal infrastructure projects.
8. Wenzhou Lisheng Electric Co., Ltd.
Wenzhou Lisheng focuses on UL-listed EMT conduits and steel fittings, featuring smooth interiors for easy wire pulling. Their zinc-coated conduits provide enhanced durability, while their compression fittings ensure watertight and dustproof installations. The company serves electrical contractors and wholesalers globally.
9. Suzhou Junchuang New Energy Technology Co., Ltd.
Suzhou Junchuang specializes in UL-certified steel conduits for renewable energy projects, including solar farms and wind power installations. Their lightweight yet robust conduits are designed for UV resistance and extreme weather conditions, supporting green energy infrastructure worldwide.
10. Zhongshan Jinlei Metal Products Co., Ltd.
Zhongshan Jinlei is a reliable producer of UL-compliant steel conduits and explosion-proof accessories. Their high-precision threading and reinforced couplings ensure safe and reliable electrical raceway systems, widely used in petrochemical plants and industrial facilities.