Construction

Tongda strictly follows building cable standards, including the National Electrical Code® (NEC), UL safety certification, Mexico's ANCE standards, and the International Electrotechnical Commission IEC standards. All products are tested by third-party laboratories to ensure the safety and long-term stability of wiring in residential, commercial complexes, industrial plants and other scenarios.

Detailed explanation of the six types of building cables

1. Single-core cable

Adopts a single copper conductor structure, with a galvanized steel mesh shield and double-layer PVC sheath wrapped on the outer layer, and can withstand 10kV high-voltage test. Designed for high-risk environments such as computer equipment and industrial cooking utensils, it is easy to maintain and has strong anti-interference.

2. Non-metallic sheathed cable

Built-in 2-3 thermoplastic insulated cores and grounding copper wires, and a paper isolation layer prevents sheath adhesion. Complies with BS 6004 residential electrical standards, and a continuous operating temperature of 105°C ensures the safety of home circuits.

3. Armored cable

Kevlar fiber reinforcement layer and ribbed steel pipe form double protection, effectively resisting mechanical damage during underground construction and erosion by corrosive media in chemical plants, extending the service life of the pipeline by more than 30%.

4. Instrument cable

Tinned copper conductor and double-layer shielding structure ensure accurate transmission of DCS/PLC signals, and IP66 protection level and oil-resistant sheath adapt to harsh industrial environments such as power plants and refineries.

5. Low-voltage cable

Supports 50-1000V AC and 75-1500V DC transmission, flexible selection of aluminum/copper conductors, widely used in low-voltage control systems such as intelligent security, fire alarm, and building automation.

6. Communication cable

Provides three transmission media: coaxial, optical fiber, and twisted pair. The STP shielding structure effectively suppresses electromagnetic interference and meets the high-speed data communication needs of data centers and commercial buildings.

Service Commitment

Certification guarantee: UL File E123456 technical documents are provided for North American projects, CPR Class B2/D-s1 fireproof labels are pre-applied to the EU market, and NOM-019-SCFI certification marks are standard for Mexican exports.

Efficient delivery: Regular orders are packed at Ningbo/Qingdao Port within 20 days, and 50,000 meters of emergency inventory is prioritized to ensure time-sensitive projects such as hospitals and data centers.