- 01Jiangsu Datang Electric Appliance Manufacturing Co., Ltd.
- 02Duoda Electric Heating Technology (Guangdong) Co., Ltd.
- 03Duoda Electric Heating Technology (Jiangsu) Co., Ltd.
- 04Duoda Electric Heating Technology (Shandong) Co., Ltd.
- 05Duoda Electric Heating Technology (Xuzhou) Co., Ltd.
QUALIFICATION & CAPABILITY
Advanced Equipment Covering
the Full Manufacturing and Inspection Chain
Advanced automatic and semi-automatic processing & testing equipment for electric heating products has been introduced. Covering the full workflow from heating raw materials, material cutting, pipe cleaning, product forming, final inspection, packaging through to delivery, all processing and testing are performed by automatic or semi-automatic facilities to guarantee every delivered product is qualified.
PRODUCTION EQUIPMENT
PRODUCTION EQUIPMENT
430 sets of processing equipment are available, including 23 hydraulic tube forming machines over 40T–1000T and 56 one-step fully automatic tube bending machines, forming three complete production lines for electric heating products.
Tube Shrinking Machine
It is used for reducing and forming electric heating tubes and compacting the insulating filler inside tubes.
Oven
Used for constant-temperature drying, preheating and curing of electric heating elements.
High Temperature Furnace
Used for high-temperature annealing and heat treatment of electric heating tubes and metal components.
Spraying Line
For continuous spraying and curing on workpiece surfaces to enhance coating adhesion.
Electric Heating Tube Heat Treatment Production Line
Integrates heating, conveying and continuous processing.
Hydraulic Tube Forming Equipment
It covers tube forming capacity from 40T to over 1000T.
Electric Heating Product Workshop
Three assembly lines for electric heating products work collaboratively for production.
Large Hydraulic Forming Equipment
23 sets of large hydraulic tube forming equipment form large-scale production capacity.
Wire Threading Machine
Used to thread resistance wires into metal tubes to meet various specifications and loads.
TESTING EQUIPMENT
TESTING EQUIPMENT
The company has jointly built the Jiangsu Datang Workstation in cooperation with the National Center for Quality Inspection and Testing of Infrared and Industrial Electric Heating Products. Its testing system covers the full chain from incoming raw materials and R&D verification to finished product delivery, ensuring stable product performance and operational safety.
Constant Temperature & Humidity Test Chamber
Simulates temperature and humidity conditions to verify product environmental adaptability.
Tensile Testing Machine
Tests mechanical properties of materials and joints.
Rapid Life Test Device for Electric Heating Tubes
For accelerated verification of service life reliability of electric heating tubes.
Spectrometer
Used for quantitative analysis of material composition and coating layers.
Comprehensive Safety Performance Tester
Conducts electrical performance and safety tests for voltages ranging from 110V to 415V.
X-ray Inspection Machine
Non-destructive inspection of internal structure and assembly quality of electric heating tubes.
Salt Spray Test Chamber
Verifies corrosion resistance of products and coatings.