The size of lamp harp usually includes two aspects of height and width. Height is usually measured from the bottom to the top of the socket. Width refers to the lateral distance of the lamp harp.

In general, the height of the lamp harp should be at least half the height of the lampshade, with the top of the lampshade aligned with the top of the lamp socket. Usually the height of the lamp harp is given in the range of 6-12 inches, and the width is determined according to the specific lampshade and lamp holder design.

It should be noted that the size of the lamp harp should match the lamp socket used to ensure that it can firmly hold the lampshade and provide sufficient support and stability. When purchasing a lamp harp, it is best to confirm the size and type of the lamp holder first, and then choose the appropriate lamp harp.

Metal light strings are usually made of metal materials such as iron, aluminum, copper, etc., which can provide sufficient strength and durability, and can also be coated or plated as needed to increase corrosion resistance or change color. Some metal lanterns are also designed with intricate textures or decorations to provide a more intuitive appearance.

In terms of color, metal lamp harps usually use basic colors such as silver, gold, and black to match the lamp holder and lampshade.

In addition, there are some specially designed metal lamp harps, such as graffiti-style black metal lamp harps, or colored metal lamp harps based on different theme colors, which can be selected according to personal preferences and decoration needs.

In short, to choose a suitable metal light piano, you need to consider the matching of its color and material, as well as the coordination with the theme of the entire room decoration.

To determine whether a lamp harp is compatible with a lampholder, the following factors need to be considered:

1. Lamp holder type: The lamp holder types usually include E12, E14, E26 and E27, among which E26/E27 is the most common. Therefore, looking at the lamp holder type can determine the size of the lamp harp that needs to be equipped.

2. Size of the lamp holder: To determine the size of the lamp holder, it is necessary to measure the diameter and length of the lamp holder. Measure the diameter at the base of the light socket, usually 3/8" or 1/2". Measure the length at the top of the lamp base so that the lamp harp will be placed at the correct height (usually between 8" and 12").

3. Weight limit: To determine the weight of the lampshade that the lamp harp needs to support, it is usually necessary to refer to the weight limit of the lamp holder. Generally speaking, the weight limit of the lamp holder should be twice the upper limit of the weight supported by the lamp harp.

4.Pull chain type: Choose the appropriate lamp harp according to the different pull chain types of the lamp holder. There are usually two types of rotating type and sliding type. The rotating type needs to insert the lamp harp into the lamp holder and rotate it, and the sliding type needs to insert the lamp harp into the zipper socket and fix it.

In summary, to ensure that the lamp harp is compatible with the lamp holder, it is necessary to determine the lamp holder type, size, weight limit and zipper type to ensure that the lamp harp can be inserted firmly and support the lamp shade.

Determining the quality and durability of a lamp harp requires consideration of the following:

1. Material: lamp harp can be made of different materials such as metal, plastic and wood. Metal lamp harps are generally longer lasting and less prone to rust and rot. Plastic lamp harps are usually lighter and less expensive. The lamp harp made of wood is more distinctive in appearance.

2. Thickness: The thickness of the lamp harp directly affects its durability. If the lamp harp is too thin, it is easy to bend or break. Therefore, choosing a thicker lamp harp can ensure the durability of the product.

3. Workmanship: The workmanship of lamp harp also determines its quality and durability. Good workmanship can make the lamp harp stronger and firmer. Therefore, it is recommended to choose a lamp harp with fine workmanship and reliable quality.

4. Manufacturer's brand: Choose a lamp harp produced by a brand with a good reputation and reputation to get better quality assurance.

To sum up, to identify the quality and durability of lamp harp, it can be judged by factors such as material, thickness, process, and brand. Choosing lamp harp with thicker, fine workmanship and reputable brand can increase the service life and stability of the product.

Lamp harp generally needs to pass the following international quality management certification:

1. ISO 9001 certification: This is the most influential quality management system certification in the world. Its purpose is to ensure that products and services meet the needs and expectations of customers and make continuous improvements.

2. RoHS certification: This is the European Union's requirements for the restriction of the use of hazardous substances in electrical and electronic products, and certification to ensure that the product does not contain banned substances.

3. CE certification: This is the safety standard of the European market, which involves all aspects of product design, manufacturing, packaging and use, to ensure that the product is safe and reliable.

4. UL certification: This is a safety standard for the North American market. It covers electrical, gas, and mechanical safety aspects of the product to ensure that the product meets North American safety standards.

The above certifications are the most common international quality management certifications. When purchasing lamp harp, you can check whether the product has these certifications. These certifications can guarantee product quality and safety, and are reliable symbols for consumers when purchasing goods.

When testing lamp harp samples, you can refer to the following aspects:

1. Appearance inspection: Check whether the surface of the lamp harp has obvious deformation, defect or blemish, such as oxidation, scratches, etc. At the same time, it is also necessary to check whether the surface is flat and whether there is any looseness or deformation.

2. Functional test: Test whether the lamp harp can be normally connected to the lamp and can support the lampshade. If necessary, test with a lamp to see if the lamp harp can bear the weight of the lampshade and is stable.

3. Material testing: check whether the materials used in the lamp harp meet the national and regional safety standards and quality requirements.

4. Durability test: Carry out the durability test of lamp harp to test its service life and fatigue resistance. Testing can be done with test equipment or by mock testing.

5. Quality control: You can refer to the manufacturer's quality control standards, such as ISO 9001, etc., as well as the manufacturer's quality inspection report. At the same time, the quality guarantee of the product can be determined according to the quality guarantee period of the product.

To sum up, when performing lamp harp sample testing, it is necessary to conduct tests in terms of appearance inspection, functional testing, material testing, durability testing, quality control, etc., to ensure that the product quality meets the requirements.

In the production process, the CNC machining process is generally adopted, and the metal materials are processed by cutting, bending, stamping, drilling and other processing operations through the automatic control system. These operations can effectively improve production efficiency and product quality.

The main process steps of metal lamp harp production are as follows:

1. Material selection: According to customer needs, select metal materials that meet the requirements to ensure product performance and appearance.

2. Design: Design according to user needs or product standards, including various size parameters, hole effects and surface treatment requirements.

3. Cutting: Use a cutting machine to cut the metal plate to determine the qualified lamp harp size and shape.

4. Bending: Use a bending machine to bend the metal plate, and bend the metal plate into the desired shape to achieve various functions.

5. Stamping: Use a stamping machine to mold the metal mold into the required holes to realize the functions of the lamp harp, such as supporting the lampshade and carrying the lamp holder.

6. Surface treatment: Surface treatment of lamp harp by roughening, electroplating, painting, etc., to protect and beautify the product.

7. Quality inspection: Carry out quality inspection for each sample to check whether the product meets customer needs and strict inspection standards.

To sum up, in the production process of metal lamp harp, a variety of advanced technologies and strict quality inspection and control are required to ensure product quality and the realization of customer needs.

The material of the metal lamp harp generally includes metal materials such as aluminum alloy, stainless steel and copper.

1. Aluminum alloy: Aluminum alloy is light, strong and corrosion-resistant, which is more suitable for making lighting accessories. In addition, aluminum alloy also has good thermal conductivity, which can quickly and effectively dissipate lamp heat to protect lamps and electrical components.

2. Stainless steel: Stainless steel metal is very corrosion-resistant, has high strength and long life, and is also very easy to clean and maintain. Stainless steel lamp harp is suitable for high-end lamps, with high-grade texture and appearance.

3. Copper: Copper metal is soft and easy to process into various shapes. Moreover, copper metal also has good electrical and thermal conductivity, which can protect lamps more effectively and prolong their service life. In addition, the color and texture of copper are very beautiful, and it is more suitable for making various European or classical style lamps.

Generally speaking, the material selection of metal lamp harp is different according to the style, style, use occasion, demand, etc. of the lamp. Each material has its own advantages and disadvantages, and it is necessary to choose the appropriate material to manufacture lamp harp according to the actual situation.