Building Wiring: In building wiring, these three specifications of cables have their own applicable scenarios. The 3G1.5mm² cable is often used for lighting lines in homes or small buildings. Its slender outer diameter is suitable for concealed laying in walls or ceilings through pipes, and can meet the power transmission needs of lighting fixtures. The 3×2.5mm² cable can be used as a socket line to connect sockets in living rooms and bedrooms, supplying power to home appliances such as TVs, refrigerators and washing machines. Its current - carrying capacity can meet the simultaneous use of these home appliances. The 3×25mm² cable can be used for main wiring of buildings, such as lines from the main distribution box to the distribution boxes on each floor, and special lines for large central air conditioners, elevators and other equipment, ensuring the overall power supply of the building. Different models of cables also have targeted applications in building wiring. For example, the R02V model has good resistance to mechanical damage and is suitable for environments that may be slightly squeezed, such as wall embedding.

Industrial Equipment Power Distribution: There are various power equipment in industrial production, and the corresponding cable choices are also different. For small instruments and control equipment, the 3G1.5mm² cable is an ideal choice, which can connect the control circuit of the equipment to ensure the stable transmission of control signals and low - power electricity. The 3×2.5mm² cable can be used for power distribution of small motors, water pumps and other equipment, such as small cooling water pumps and conveyor belt motors in workshops. The 3×25mm² cable is suitable for small and medium - sized industrial motors, large fans and other equipment, and can carry the current when the equipment starts and runs. Some models, such as Arvfv, have certain oil - resistant and wear - resistant properties, and can be used in industrial environments with oil stains and slight friction, ensuring the service life of the cable.

Low - Voltage Power Transmission: In low - voltage power transmission scenarios, such as distribution branches inside factory areas and distribution lines in residential areas, this series of cables performs well. The 3G1.5mm² and 3×2.5mm² can be used for short - distance and low - power power transmission, such as branches from distribution boxes to each household in residential buildings; the 3×25mm² can be used for slightly longer - distance and higher - power transmission, such as main lines from residential area distribution rooms to several buildings. The excellent performance of the XLPE insulation layer makes the cable have low power loss during transmission, and can adapt to different laying environments such as outdoors or underground. Some models, such as Rvfv, have moisture - proof performance and are suitable for laying in humid underground environments.

Materials

Style: All are 3 - core stranded styles. The 3 Core Wires are stranded together, with the insulation layer and sheath wrapped outside, and the overall structure is compact. The cable has a round appearance and a smooth surface. This style is convenient for passing through pipes and trunking during laying, reducing laying resistance. The sheath is usually printed with marks such as model, specification and rated voltage, which is convenient for identification and traceability. The 3G1.5mm² and 3×2.5mm² cables are relatively slender and flexible, making them easy to operate during laying; the 3×25mm² cable is relatively thick but still maintains a certain Flexibility, which can meet the requirements of conventional laying.

Conductor Production: If Copper Conductors are used, first, copper raw materials are smelted and purified to make copper rods, and then the copper rods are drawn into Copper Wires of the required diameter through wire drawing equipment. According to the cable specifications, multiple copper wires are stranded to form a single - core conductor. The single - core conductors of 3G1.5mm², 3×2.5mm² and 3×25mm² are respectively stranded by copper wires of corresponding quantity and diameter. During the stranding process, the stranding pitch and tension are controlled to ensure that the conductor is round and the conductivity is uniform. If aluminum conductors are used, the production process is similar. Aluminum raw materials are processed into aluminum rods, then drawn and stranded.

Insulation Layer Extrusion: Extrusion equipment is used to heat and melt the XLPE material, and evenly extrude and coat it on the surface of the conductor through a mold to form an insulation layer. Strictly control parameters such as extrusion temperature and speed to ensure that the insulation layer has a uniform thickness, a smooth surface, is closely combined with the conductor, and has no defects such as bubbles and impurities. After extrusion, the insulation layer is cross - linked. By heating, the XLPE molecules form a network structure to improve temperature resistance and mechanical strength.

Cabling: 3 single - core conductors covered with insulation layers are cabled. For 3G1.5mm² and 3×2.5mm², appropriate filling materials can be used to make the structure round during cabling; for 3×25mm² cabling, it is necessary to ensure that the core wires are arranged neatly, and appropriate filling materials are used to avoid friction between core wires. After cabling, wrap the binding tape to fix the position of the core wires.

Sheath Extrusion: Select the corresponding sheath material, such as PVC, according to different models. After heating and melting the material, extrude and coat it on the outside of the cabled cable through an extruder to form a sheath. Control the extrusion parameters to ensure that the sheath has a uniform thickness, a flat surface and is attached to the internal structure. After extrusion, it is cooled and solidified to enhance the mechanical properties and protective performance of the sheath.

Finished Product Inspection: The finished cables are subject to strict inspections. The appearance inspection checks whether the surface is smooth, whether there is damage and whether the marks are clear; the size measurement detects the outer diameter, insulation and sheath thickness, etc.; the electrical performance tests such as insulation resistance and voltage withstand test are carried out to ensure that they meet the standards. Only cables that pass the inspection can leave the factory.

Packaging Materials: Select packaging materials according to cable specifications and lengths. For short - length cables of 3G1.5mm² and 3×2.5mm², plastic reels or spools can be used for packaging, which are lightweight and low in cost; for longer - length or 3×25mm² cables, wooden or steel cable reels are used. Wooden cable reels are suitable for short - distance transportation and small batches, while steel cable reels have high strength and are suitable for long - distance and large - batch transportation.

Packaging Methods: Wind the cable neatly on the packaging carrier, and maintain appropriate tension during winding to avoid looseness and distortion. Wrap a moisture - proof film around the outer layer of the cable to prevent moisture. The model, specification, length, manufacturer, production date and other information are clearly marked on the packaging. Protective plates are installed on the edges of wooden and steel cable reels to prevent collision damage during transportation.

Packaging Requirements: The packaging must be firm and reliable, able to withstand external forces during transportation and handling, and prevent the cable from moving and wearing. It has moisture - proof and dust - proof functions and can adapt to different environments. At the same time, it is convenient for hoisting and transportation, and large cable reels are provided with hoisting holes.

Transportation Methods: Trucks are used for short - distance transportation, equipped with fixing devices to fix cable reels or spools to prevent shaking. For long - distance transportation, railways can be chosen, which have good stability and large transportation capacity; long - distance trucks can also be chosen, which have high flexibility.

Transportation Precautions: Check the packaging and fixing before transportation. Avoid severe collision and extrusion during transportation, and it is strictly forbidden to invert. Set warning signs such as "Handle with Care" and "Moisture - proof" on the transport vehicle. Avoid the cable being exposed to the sun, rain and freezing, and take good protective measures in bad weather. Drive smoothly during driving and reduce sudden braking and sharp turns.

Transportation Tracking: Arrange special personnel to track the transportation, keep in touch with the driver or logistics company, and keep abreast of the transportation progress and location. Master the weather and road conditions on the way, and deal with abnormal situations in time to ensure that the cable arrives safely on time.

Delivery Process: After the customer places an order, the sales staff will transmit the order information to the warehouse. The warehouse staff check the cable model, specification and quantity to ensure they are consistent with the order. Conduct an outgoing inspection of the cable to confirm that the packaging is intact and the marks are clear. Arrange transport vehicles and go through the delivery procedures. After loading and fixing, inform the customer of the transport information.

Delivery Time: When there is sufficient inventory, delivery will be made within 1 - 3 working days. In case of customized specifications or insufficient inventory, inform the customer of the production cycle and expected delivery time and keep in touch.

Delivery Notification: After the cable is shipped, notify the customer by SMS, phone call or email, and provide information such as the logistics order number to facilitate the customer to track.

Sample Provision: Provide samples of various specifications for customers, with a length of 1 - 2 meters, which can reflect the actual situation of product materials, structure and appearance, helping customers understand the products.

Sample Cost: Samples are free, and the transportation cost is borne by the customer. Customers can choose to pay on delivery or in advance.

Sample Delivery: Prepare samples and package them simply within 1 - 2 working days after receiving the application. Send them by reliable express and inform the customer of the express waybill number. Attach product description materials to facilitate customers' understanding.

Quality Assurance: Provide a 12 - 24 - month quality guarantee period. If a fault is caused by the product's own quality problems within the guarantee period, free repair or replacement will be provided after identification.

After - sales Service Response: Set up an after - sales hotline and online customer service, so that customers can contact at any time when they encounter problems. After - sales personnel will respond within 24 hours to understand the situation and provide preliminary solutions.

On - site Service: For problems that need on - site handling, send technical personnel to conduct on - site investigation and handling, analyze the cause of the fault and solve it, and restore power supply as soon as possible.

Technical Support: Provide technical support such as selection, laying and maintenance, recommend appropriate specifications and models according to customer needs, and answer technical questions.

Customer Feedback: Establish a feedback mechanism to collect customers' opinions and suggestions on products and services, and improve them in time to enhance satisfaction.