GRP FRP Pipes Sea Water Pipe Series DN 250

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100 pc
Supply Capability:
10000 pc/month

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Features & Benefits of GRP FRP pipe sea water pipe series

Corrosion-resistant

•Long, effective service-life materials

•No need for linings, coatings, cathodic protection, wraps or other forms of corrosion protection

•Low maintenance costs

•Hydraulic characteristics essentially constant over time

Light weight

(1/4 weight of ductile iron; 1/10 weight of concrete)

•Low transport costs (nestable)

•Eliminates need for expensive pipe handling equipment

Long standard lengths

(6, 12 metres)

Fewer joints reduce installation time

More pipe per transport vehicle means lower delivery costs

Extremely smooth bore

Low friction loss means less pumping energy needed and lower operating costs

Minimum slime build-up can help lower cleaning costs

Precision sealability

With elastomeric rubber rings

Tight, efficient joints designed for bell & spigot to eliminate infiltration and ex-filtration

Ease of joining, reducing installation time

Accommodates small changes in line direction without fittings or differential settlement

Flexible manufacturing

•Custom diameters can be process manufactured to provide maximum flow volumes with ease of installation for rehabilitation

lining projects

High technology pipe design

•Lower wave celerity than other piping materials can mean less cost when designing for surge and water hammer pressures

High technology pipe manufacturing system producing pipe that complies to stringent performance standards (AWWA, ASTM, DIN, EN, etc.)

•High and consistent product quality worldwide which ensures reliable product performance

Control Testing of GRP pipe sea water pipe series

Raw Materials

Raw materials are delivered with vendor certification demonstrating their compliance with Zhongfu Lianzhong quality requirements. In addition, all raw materials are sample tested prior to their use. These tests ensure that the pipe materials comply with the specifications as stated

Physical Properties

The manufactured pipe’s hoop and axial load capacities are verified on a routine basis. In addition, pipe construction and composition are confirmed.

Finished Pipe

All pipes are subjected to the following control checks:

• Visual inspection

• Barcol hardness

• Wall thickness

• Section length

• Diameter

• Hydrostatic leak tightness test to 1.5 rated pressure (only PN6 and above)

On a sampling basis, the following control checks are performed:

Pipe stiffness

Deflection without damage or structural failure

Axial and circumferential tensile load capacity

Thickness and Weight of Standard Pipes based on Internal Pressure of GRP pipe sea water pipe series

1. Internal liner (thickness 1.0 – 2.0 mm)

   In tables bellow thickness include 1.5mm of liner and minimum pipe Stiffness 1250 Pa

2. Mechanical resistant layer in glass filament winding (based on internal pressure)

3. Top coat (0.2 – 0.3mm) . In tables bellow thickness include 0.2mm of top coat


GRP FRP Pipes Sea Water Pipe Series DN 250

UnloadingHandlingTransportation and Storage of GRP pipe sea water pipe series

Unloading and Handling Pipes

Unloading the pipe is the responsibility of the customer. Be sure to maintain control of the pipe during unloading. Guide ropes attached to pipes or packages will enable easy manual control when lifting and handling. Do not drop, impact, or bump the pipe, particularly at pipe ends.

If at any time during handling or installation of the pipe, any damage such as a gouge, crack or facture occurs, the pipe should be repaired before the section is installed.

Transporting Pipes

Strap pipe to the vehicle over the support points using pliable straps or rope. Never use steel cables or chains without adequate padding to protect the pipe from abrasion. Bulges, flat areas or other abrupt changes of curvature are not permitted. Transport of pipes outside of these limitations may result in damage to the pipes.

Site Pipe Storage

It is generally advantageous to store pipe on flat timber to facilitate placement and removal of lifting slings

around the pipe.

When storing pipe directly on the ground, be sure that the area is relatively flat and free of rocks and other

potentially damaging debris. Placing the pipe on mounds of backfill material has been found to be an effective

way of site storing the pipe. All pipes should be chocked to prevent rolling in high winds.



GRP FRP Pipes Sea Water Pipe Series DN 250

GRP FRP Pipes Sea Water Pipe Series DN 250

FAQ of GRP pipe sea water pipe series

Q1: What’s the performance standards?

Lianzhong pipe is designed to meet all of these ASTM , AWWA, BS, DIN standards.

Q2: What’s the qualification testing for the products?

 Lianzhong pipe has been rigorously tested to verify conformance to the ASTM D3262, ASTM D3517, AWWA C950 and DIN 16868 requirements

Q3: How long can I receive my goods?

A: Usually, we will deliver products within 20 days after the contract is signed. Delivery time is negotiable when necessary.




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Q:How to repair and repair the broken hole of GRE glass fiber reinforced plastic pipe?
The service will be restored in 24 hours, and I hope this will help you! Can private letter to contact is not clear!
Q:How can FRP tanks be connected to steel tubes?
FRP pipe and glass fiber reinforced plastic fittings (three passes, elbows, etc.) generally speaking, the best way is on-site bonding, the quality is stable and convenient.
Q:What are the posts of glass fiber reinforced plastic sand pipe and the corresponding occupational hazards and protection?
FRP material has the characteristics of excellent corrosion resistance, no underground water or sewage pipe tube with acidic or alkaline causes no damage to the use of the product, and the product itself, do not need to do any protective measures, steel pipe and concrete pipe does not have the advantage.
Q:How can I replace the valve on the water supply pipe?
Steel flanges, three way pipe fittings and single disk connector is connected, immediately install three branch pipe valve, and will be closed fittings and valves at the bottom with concrete pier support, in order to timely restoration of water supply.
Q:Would like to ask about the plastic lined steel pipe, steel pipe, glass steel skeleton, the advantages and disadvantages of each ceramic pipe, to know a friend told, very grateful!
Plastic lined steel pipe of strong corrosion resistance, heavy quality, need to be made, on-site installation, if the size deviation cannot be installed. The price is more than 5 times more expensive than that of FRP
Q:What are the main materials used for steel pipes?
The grade of the material according to the general use of distinction: 1, clean air conditioning system with wind pipe: galvanized plate, stainless steel (disabled; glass steel, composite dust pollution may be used in the wind pipe with 2), the central air conditioning system: galvanized plate, color steel insulation board; (can use glass steel, the composite wind pipe) in 3, the environmental control system: galvanized steel plate, stainless steel; (can use plastic, glass steel, composite materials) duct 4, industrial ventilation system: steel plate, galvanized plate; (can use plastic, glass steel, composite materials) Note: can be divided into two kinds of organic and inorganic glass steel duct, according to the design specification has disabled organic material fire safety requirements; air duct 5, special occasions: glue cloth hairdryer, mine plastic mine ventilation pipe; (flame retardant and anti-static characteristics of mine safety requirements)
Q:The difference between GRP cable duct and PVC cable pipe
Glass fiber reinforced plastic cable pipe is a kind of pipe made of resin as matrix, with continuous glass fiber and fabric as reinforcing material, and controlled by computer, winding process or pultrusion process.
Q:Why FRP pipes for outdoor waste gas treatment equipment are selected?
Therefore, the outdoor waste gas treatment equipment is usually made of glass fiber reinforced plastic.
Q:What is the compressive strength of all kinds of FRP materials?
Anti fouling and anti moth: unsaturated polyester resin surface clean and smooth, will not be ocean or sewage in the shellfish, fungi and other microorganisms stained, moth, so as to increase roughness, reduce water cross section, increase maintenance costs. FRP pipes are free from these pollution and are clean for a long time. At the same time, because of its smooth inner wall and excellent corrosion resistance, it will not cause scale and microbial growth, effectively guarantee water quality and maintain the stability of water resistance. But the traditional pipe still exist after water resistance increases and the surface fouling phenomenon.
Q:What is the stiffness of FRP pipe?
Ring stiffness refers to a technical index of FRP pipes subjected to external pressure.

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