Hardware connecting pipe fittings can be seen everywhere in our lives and need to be used everywhere, especially on some large and small machines, many of which are related parts made of hardware, as well as some small hardware products. It has a single purpose as well as an auxiliary purpose, such as hardware tools, hardware parts, daily hardware, construction hardware and security products, etc., let's understand the classification of hardware pipe fittings.

1. Mechanical hardware: fasteners, rolling bearings, belts and chains, lubricating parts, keys and splines, keys and splines, welding equipment, lifting equipment, etc.;

2. Building hardware: building profiles and structural parts, building doors and windows and their hardware accessories, nails and nets, plumbing equipment, fire fighting equipment and automatic fire alarm devices, etc.;

3. Electrical hardware: general-purpose wires and cables, buttons and switches, relay contactors, electromagnetic starters and electromagnets, fuses, circuit breakers and leakage protectors, control transformers and signal lights, AC motors, electrical instruments, etc.;

4. Hardware tools: hand tools, civil engineering tools, plumbing tools, decorative engineering hand tools, electrical tools, cutting tools, measuring tools, power tools, pneumatic tools, gardening tools, etc.;

5. Hardware materials: steel materials, non-ferrous metal materials, non-metal materials, steel, etc.;

6. Hardware machinery equipment: machine tools, pumps, valves, food machinery, instrumentation processing, packaging material manufacturing;

7. Hardware products: alloys, metal processing materials, ordinary steel materials, stainless steel materials, metal wires, ropes, metal nets, scrap metals;

8. General accessories: fasteners, bearings, springs, seals, rigging, gears, molds, abrasive tools;

9. Hand tools: daily tools, grinding, hydraulic, lifting, measuring, saw, hammer, screwdriver, wrench, electric, manual;

10. Construction hardware: pneumatics, doors and windows, pipe fittings, kitchens, lamps, sanitary ware, locks, construction, building materials, coatings;

11. Electronic and electrician: low-voltage electrical appliances, instrumentation, chargers, motors, connectors, anti-static, cables, insulating materials, electronic materials.