As one of the basic materials that are basically used in the decoration process, the brand selection of threading pipe is very critical, because the brand not only determines the quality of the product to a certain extent, but also determines the quality of the product from a certain level. Speaking of which, there is a great connection between the brand, the price of the product and the subsequent use effect. For first-time purchasers or inexperienced friends, it is a good suggestion to start from the brand aspect, so the following examples are about the products on the market. A trustworthy brand of threading pipes.

1. Top ten brands of PVC conduits

1. Lesso (Chinese famous brand, Chinese well-known trademark, national inspection-free product, top ten brands of wire conduits)

2. Zhongcai? (Chinese Famous Brand, China Well-known Trademark, National Inspection-Exemption Product, Top Ten Wire and Tube Brands)

3. Weixing? (Chinese Famous Brand, China Well-known Trademark, National Inspection-Exemption Product, Top Ten Wire tube brand)

4. Jinniujiao? (Chinese famous brand, national inspection-free product, top ten wire tube brands)

5. Baidie? (National inspection-free product, top ten wire tube brand) Pipe brand, Shanghai Baidie Pipe Technology Co., Ltd.)

6. Rifeng? (Chinese famous brand, Chinese well-known trademark, national inspection-free product, top ten wire and tube brands)

7. Hongyan (Zhejiang Famous Brand, China Well-known Trademark, Top Ten Electrical Conduit Brands, Hangzhou)

8. Jinde? (Chinese Famous Brand, China Well-known Trademark, National Inspection-Free Product, Top Ten Electrical Conduit Brands)

9. Piersa (Top Ten Electrical Conduit Brands, Well-known Brand, Shanghai Piersa Pipe Industry Co., Ltd.)

10. Aikang-Poly (Shanghai Famous Brand, Top Ten Electrical Conduit Brands) , Shanghai Aikang New Building Materials Co., Ltd.)

2. PVC threading pipe selection method

1. Flame retardant test. Use an open flame to burn the PVC pipe 3 times continuously, 25 seconds each time, with an interval of 5 seconds. The pipe will self-extinguish after it is removed from the fire source.

2. Bending and flattening test. A bending spring is inserted into the pipe to bend the pipe to 90 degrees. The bending radius is 3 times the pipe diameter and the appearance is smooth.

3. Impact test. Use a round head to tap without cracks (can be used for on-site inspection).

3. Precautions for the operation of wire pipes:

When laying wires through pipes, the total cross-sectional area of ??the wires cannot exceed 40% of the inner diameter of the wire pipe.

When designing wire laying, wires and signal wires cannot be run through the same conduit to avoid mutual interference.

IV. How to use PVC wiring pipes correctly in different situations

1. For wiring pipes concealed in walls, buried underground without combustion, and rural buildings Wire conduits used for ordinary residential home decoration must use PVC conduits that meet the standards of the Ministry of Construction JG3050-199[1]?8 "Insulated Electrical Casings and Accessories for Buildings" and have certain flame retardant properties and meet the physical and mechanical performance requirements. .According to details and local conditions.

2. For places with high fire risk, such as ceilings and floors in public gathering places such as hotels, restaurants, shopping malls (large supermarkets), libraries, singing and dancing entertainment venues, etc. When protecting the lines inside the ceiling and floor, because there are many combustible and flammable materials in the ceiling and floor, flame-retardant PVC wiring pipes with higher combustion performance levels should be selected [2]?.

3. It is mandatory to use flame-retardant PVC threading pipes that meet the industry standards of the Ministry of Public Security for fire protection distribution lines and automatic fire alarm system electrical lines.

4. For the renovation of exposed electrical lines and interior decoration of ancient buildings with cultural relics If it is necessary to use exposed wiring (hidden in the ceiling or floor) during the secondary decoration of houses and the renovation of old or old buildings, flame-retardant PVC wiring pipes with a combustion performance of B1 or above must be used.

Go through the above From the example in the article, we can know that although there are many brands of threading pipes on the market, and the corresponding sizes, specifications, and prices are also different, only by choosing a reasonable brand and considering their own needs can we protect consumers. maximum benefit and be able to achieve satisfactory results in the later stage.

In addition, for those who are interested in purchasing but have no experience, the editor recommends that you refer to the above knowledge to formulate appropriate plans and choices.

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