GRP FRP pipes sea water pipe series DN 50

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Lianyungang
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100 pc
Supply Capability:
10000 pc/month

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Features & Benefits of GRP FRP pipes 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 50

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 50

GRP FRP pipes sea water pipe series DN 50

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:What is the thickness of all types of FRP pipes?
DN200, DN150, DN100, DN80 pipe, polyurethane foam pad, 50mm thick shell, glass steel, thickness 3mm.
Q:FRP duct material plan is how to mention?
Multi plan square, but also according to the combination of site and construction drawings, to see how much
Q:The outer thermal protection layer of the pipeline is made of GFRP. Which guy knows the construction method?
Usually with aluminum or iron sheet, with glass or steel, or the first time, I'm afraid the toughness is not enough.
Q:What kind of material are the flanges and valves on the GRP pipe?
The flange on the GRP pipe is fiberglass, and the flanges and pipes are one. The valve is welded with carbon steel
Q:Winding method of glass fibre reinforced plastic pipeline anticorrosive glass fiber cloth
1) FRP reinforcement, length of rectangular duct is greater than 900mm, and the pipe length is more than 1250mm, should be strengthened. The reinforcement shall be made of bulk material (fiber reinforced plastic) and reinforced plate at the maximum stress, so as to increase the modulus of the section and increase the overall strength of the tube. FRP reinforcement can also be in the wind pipe production is completed, the treated metal or other corrosion resistant material for reinforcement, reinforcement and FRP as a whole, and with the same pipeline body cementitious material sealing gap2) hobas pipe surface thickness of the slurry to flatten the glass fiber mesh cloth texture is appropriate (see:). No dense air holes and grout leaks are allowed on the wall of the pipe to avoid the stress concentration under the bending tensile stress (positive air pressure) and the bending compressive stress (negative wind pressure).3) FRP pipe and flange corner should transition arc, transition radius to wall thickness of 0.8 ~ 1.2 times, improve the bearing capacity and the cantilever flange to avoid stress concentration. Fiberglass mesh shall be extended to the duct at the flange of the duct.
Q:What are the construction methods of glass fiber reinforced plastic paint anticorrosive pipes?
Epoxy coal tar pitch is a kind of anti-corrosion form with high cost performance. The engineering test shows that the epoxy coal asphalt is used as cathodic protection.
Q:What are FRP pipes?
The pipe wall structure reasonable and advanced, can give full play to the role of material, to meet the premise of use strength, improve the rigidity, ensure the stability and reliability of the product.
Q:FRP acceptance standard
Perform hydrostatic test. In order to comprehensively check the installation quality of pipes, the pressure test shall be carried out according to the test methods stipulated in the code for construction and acceptance of water supply and drainage pipe works, and the allowable seepage water quantity shall be carried out according to the standards of the steel pipe.
Q:What is fiberglass communication tube?
Fiberglass communication tubes are different from electric protective tubes. Glass fiber reinforced plastic communication tube is a composite structure, the inner layer of glass fiber burr cleaning, and brushing a thicker layer of resin, or lined with a layer of PVC.
Q:What is the structure and function of glass fiber reinforced plastic lining?
The structure is made up of colloid + glass cloth. The construction process is like this:1, carbon steel inner wall grinding acute angle, rust removal2, brushing glue3, cloth affixed4, brushing glue5, cloth affixed

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