Steel Ribbed Polyethylene Pipe (SRPP) Machinery Line

Short Description:

The composite pipe has been widely used in many fields. Continuous Steel Ribbed Polyethylene Pipe (SRPP) has specific advantages of corrosion resistance, anti-settling, long service life, convenien...


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The composite pipe has been widely used in many fields. Continuous Steel Ribbed Polyethylene Pipe (SRPP) has specific advantages of corrosion resistance, anti-settling, long service life, convenient transportation and construction installation with lower costs.

By Comparing with traditional steel wired reinforce pipe, this brand new technology supported by US national standards, with nearly 30 to 40 years of experience in the United States. Under Analysis and verification of the quality & service life for this kind of pipe. the pipe service life can be reached 80 years.

The diameter of the pipe is from 600 mm (24 inch) up to 3000 mm (118 inch). The specific advantage is the h​igh stiffness with lower cost. The ring stiffness reached SN8 to SN12.5 , which is higher than other typical type of pipes. This pipe meets ASTM A978/A978M,  Italian standard, Chinese national standard etc.

Besides the enhanced performance, the another primary advantage is that the new pipe can save material cost obviously. In general it will be thinking as a great improvement if any technique innovation could reduce the material consumption in 10%.

However, the SRPP pipe has saved the plastic consumption nearly in 50% by comparing with other plastic sewage pipes in same diameter and ring stiffness. It is an exciting value for production cost reducing.

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Since it uses polyethylene raw material is not high, similar with the steel wired  pipe, Saving at least 30-50% more by comparing with Carat Pipe. Faster production speed under lower costs, higher automation degree that makes the employment cost lower.

Lower Manufacturing Cost

The equipment can be pulled to the site for production if meet required environment condition, which reducing the pipe transportation cost. There is no need to change the mold to manufacture any diameters between 600mm – 3000mm. Compared with the double wall bellows, steel wired reinforced pipes and Carat pipes, the production efficiencies are well considered since there’s no need to temporally pause the machine in order to change the mold.

Lower Equipment Cost

SRPP has convenience production procedure, one equipment can produce 600mm+ Pipe caliber. If modified to one equipment with three sets of devices that can produce any specification pipes between 600mm – 3000mm caliber.

Lower Transportation Cost

All equipment can be assembled in a flatbed truck, which means SRPP can be produced on the truck. It saves a lot of costs for large-caliber pipe transportation.

More Reliable

Steel Ribbed PE pipes are perfectly combining mechanical and chemical system to ensure composite integrity by using high tightness of the cover layer,better weathering and impact resistance, strong corrosion-resistance polymeric membranes to ensure safety and be ready for long-term operation.

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Advantage of SRPP pipe

The most economic solution for large size sewage/drainage pipe system

Material cost saving up to 50% compared to double wall corrugated pipe

Reinforced by high strength steel band, high stiffness SN8 to SN16 by ISO 9969

Diameter range: DN 600 – DN3000 mm

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Firstly, the galvanized steel sheet un-coiled through the coating equipment, where the outer surface of the steel sheet coil is compounded with a 0.25mm thickness protective polymer film, which is a coating film with high corrosion resistance, strength and wear resistance. The inner surface of the steel band compounded with a 0.25 mm thickness adhesive layer film. Then, the steel band coiled with the polymer is sent to the pipe forming machine to be processed into a pipe, and then, lined with polyethylene. The lining material is extruded into the ribs and onto the inner pipe wall to form a 1.65mm thickness sheet. The extruded polyethylene and the adhesive layer film chemically bond to form a 1.91 mm thickness inner liner.

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Finished Product

Finished Product

 Unit:mm

Serial #

DN/ID

SN

Steel Band Thickness/tmin

 Minimum Coating Thickness/e2,min

1

600

>SN12.5

1.6

1.9

2

800

>SN12.5

1.6

1.9

3

900

>SN12.5

1.6

1.9

4

1000

>SN12.5

1.6

1.9

5

1200

>SN12.5

1.6

1.9

6

1400

>SN12.5

2.0

1.9

7

1500

>SN12.5

2.0

1.9

8

1700

>SN12.5

2.8

1.9

9

1800

>SN10

2.8

1.9

10

2000

>SN10

2.8

1.9

11

2200

>SN10

2.8

1.9

12

2300

>SN10

2.8

1.9

13

2400

>SN10

2.8

1.9

14

2600

>SN10

2.8

1.9

15

2800

>SN 10

2.8

1.9

16

3000

>SN 8

2.8

1.9

Product comparison

  SRPP Carat Pipe Steel reinforced Pipe Double Wall Corrugated Pipe
Corrosion resistance +++ ++++ + ++++
Ring Stiffness +++ + ++++ +
Productivity ++++ + ++ ++
Equipment investment + ++++ +++ +++
1713677339_19464-1

Next generation to highly specialize machinery


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