In daily life, we often see pvc drainage pipes, which are necessary materials for decoration and have many specifications, which will be more troublesome for people who don't understand. In fact, buying pvc drainage pipes is not a simple purchase, but also know how to buy pvc drainage pipes with good quality and low price. Here, we must first understand the specifications of pvc sewer fittings. Then I know what the purchasing skills are. Let's talk about it in the following small series.

Specification for PVC sewage pipe fittings

Details of pvc drainage pipe specifications The length of pvc drainage pipe is generally 4 meters or 6 meters. If you need other lengths, you can negotiate with the manufacturer for customization. The nominal outside diameter of pvc drainage pipes is strictly regulated, and it is implemented according to the national standard GB/T5836. 1-2006. The nominal external diameters of pvc drainage pipes are 32mm, 40mm, 50mm, 75mm, 90mm,110mm,125mm,160mm,180mm, 200mm, 250mm and so on.

The specifications of pvc drainage pipes must meet the standards, and their performance indicators must also meet the requirements. The appearance of the drainage pipe requires the inner and outer walls to be flat and smooth, without bubbles, cracks, depressions, traces, etc. , uniform color distribution; The tensile yield strength is greater than 40MPa and the softening temperature is above 80 degrees Celsius. The drop hammer impact test result is less than 10%.

There are strict regulations on the wall thickness of pvc drainage pipes. The specific requirements of the outer diameter and wall thickness shall conform to the GB/T5836. 1-2006 standard, the longitudinal shrinkage shall be less than 5%, and the deviation of the same section shall not exceed 14%.

Specifications and models

Pvc water supply pipes: De20, De25, De32, De40, De50, De63, De75, De 1 10.

Pvc drainage pipes: De50, De75, De 100, De 125, De 150, De200.

Pvc conduits: Ф16, Ф 20, Ф 25, Ф 32, Ф 40, Ф 50, Ф 75, Ф100.

Slot width (mm)

Pvc water supply pipes: 20, 25, 32, 40, 50, 63, 75, 90, 1 10,160,200.

Pvc drainage pipes: 40,50,75,90, 1 10,160,200,250,315,400,500.

Pvc threading pipe: 16, 20, 25, 30, 40, 50, 75, 90, 1 10.

Selection skills of pvc drainage pipe fittings

1. First, select the products that implement the national standard. Consumers should pay attention to whether the national standard is marked on the pipe when purchasing it. If enterprise standards are implemented, they should pay attention.

2, pay attention to observe the appearance of the pipe, the pipe should be smooth, flat, no bubbles, discoloration and other defects, uniform color, no impurities, uniform wall thickness.

3. Pay attention to the pressure grade of the water supply pipe and choose the pressure grade that meets the actual use requirements. Generally speaking, hot water pipes should be made of S series pipes below 2.5, that is, the wall thickness of pipes with an outer diameter of 20 should be above 3.4mm, and that of pipes with an outer diameter of 25 should be above 4.2 mm.

4, the pipeline should have enough stiffness, especially the drain pipe, and the pipeline cannot be deformed by hand pressure.

5. In terms of raw materials, we should choose manufacturers with stable supply and stable quality. Dengquan Plastic Industry will supply pvc-u to the drainage pipe for a long time based on the principle of "product = quality".

abstract

In fact, pvc sewer pipe fittings are the most widely used, and the material is PVC resin. The price is not very expensive, but there are many occasions for use, so we must choose the specifications according to the occasions when buying. If you don't know, you can consult the store, but now most stores will give a perfunctory answer, so the best way is to consult the designer or learn online. I hope this article can help everyone.