HDPE double-wall corrugated pipe for drainage is made of polyethylene resin as the main raw material, adding appropriate amount of additives, and is extruded, which is suitable for new pipes for outdoor drainage and municipal sewage disposal. It has the advantages of light weight, low drainage resistance, high compressive strength, corrosion resistance and convenient construction. It is an ideal material to replace cast iron pipes and cement concrete pipes.

HDPE structural wall pipe shows more economic and social benefits than cement socket pipe

First, greatly shorten the construction period and reduce the construction difficulty

Because the quality of HDPE double-wall corrugated pipe is much lighter than cement pipe, it is very easy to insert, so the construction difficulty is greatly reduced; and the HDPE double-wall corrugated pipe is as short as 6 meters, and the cement pipe is 2.5 meters, which greatly shortens the construction period. .

Second, HDPE double-wall corrugated pipe is not required for the bottom of the ditch

Since the cement pipe is a steel pipe, in order to ensure the effect of the socket, the bottom of the groove must be leveled, it is better to lay the foundation layer, and the construction personnel are required to have absolute responsibility. HDPE double-wall corrugated pipe is a flexible pipe, which is not required for the bottom of the ditch.

Third, HDPE pipe does not break on the ground sinking or crustal changes

The elongation of HDPE pipe is more than 20 times that of steel pipe, which is six and a half times that of PVC. Its elongation at break is very high and its elongation is very strong. This means that HDPE pipes can produce resistance deformation without breaking when the earth's crust is changed during a sinking or earthquake. This is far superior to steel pipes and also superior to PVC pipes with obvious brittleness. This performance has been proved at home and abroad (the Japanese Hanshin Earthquake did not cause a pipe break; the HDPE pipe was not damaged in the Baoshan earthquake in the Zhinan).

4. The permeability of HDPE pipe is much lower than that of cement pipe, less than 2%, and will not cause secondary pollution to groundwater.

The cement pipe is inelastic. Although it is equipped with a rubber ring, the sealing effect is poor. Especially for the construction workers, due to the heavy weight of the cement pipe, it is not easy to construct. The effect of the socket is lost due to the effect of the socket, so that the permeability of the pipe is improved.

5. HDPE pipe has a long service life of more than 50 years.

The safety of PE pipes has lasted for more than 50 years. This has not only been proved by international standards and New International, but has also been proved by advanced countries. Cement management has a service life of 20 years, but it is a silicate type, which has been corroded by acid and alkali for a long time and its life is greatly reduced. There are examples of cement pipes in the whole country that have to be replaced due to leakage of sewage, the interface is broken, and it has to be replaced within a few years.

6. The inner surface of HDPE pipe is smooth, without positive and negative electric core, no scaling

The cement pipe is easy to scale, and after scaling, the pipe diameter is reduced, which affects the flow rate.

Seven, HDPE is light in weight, easy to transport and install, no loss

Cement pipes are heavy in weight, are inconvenient to transport and install, and are prone to loss during transportation and installation.

8. When the pipeline passes the same flow, slope and buried depth, HDPE can be one or two smaller than the cement pipe.

The inner surface roughness coefficient of HDPE is 0.009, and the inner surface roughness coefficient of cement pipe is 0.014. According to the world-recognized Xie Cai's law, the same flow rate calculation is carried out. HDPE pipe can be two models smaller than cement pipe. In practical application, a small model is recommended. Just fine. For example, a 600-caliber cement pipe can be replaced with a 500-diameter HDPE.

Fiberglass Backing Pad

Flap Disc Backing Pad Specification:

Material: High Purity Fiberglass Cloth with Phenolic Resin

Surface: Black Paper, OEM Label

Type: T27, T28, T29.

Size: 75mm, 85mm, 90mm, 95mm, 107mm, 117mm, 140mm, 220mm

Layers: Normally it ranges from 6-12 layers, or as customers` requirements.

1. Our Flap Disc backing pad uses stamping method, makes our fiberglass backing pad size more accurate and concentricity better

2. The flap disc backing Inspect all products, to maximize the rate of standard product

3. The fiberglass backing pad is thicker, which is beneficial to increase the synchronous consumption of the flap disc

4. The fiberglass backing pad has more micro space to make the resin deeper import, and the Sanding Belt is easier to fit on the fiberglass backing pad

5. This Nylon fiber backing pad use dense glass fiber mesh cloth, the surface of the fiberglass backing pad is more smooth and beautiful than similar products

The Fiberglass backing pad is Suitable for: Abrasive Flap Disc , Clean And Strip Disc , nylon fllap wheels,

The related abrasive products we can supply is Flap Disc Adhesive , Bonded Abrasives , and Buffing And Polishing products, such as Cotton Buffing Wheels and Sanding Sponge , if you have any needs about abrasive tools, please kindly feel free to contact us.

Packaging Details for Fiberglass backing plate:

1. 20-50pcs wrapped with polyethylene film,

2. 250-1000pcs into boxes or cartons

3. 20-40 cartons are packaged on one pallet.

4. Usually about 250 000-350 000pcs per 20" conainer,

about 400 000-650 000pcs per 40" conainer.

about 1 000 000 pcs per railway wagon.

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Zhengzhou Jiading Abrasive Manufacturing Co.,Ltd , https://www.jd-abrasives.com