• GRP FRP pipes sea water pipe series DN 50 System 1
  • GRP FRP pipes sea water pipe series DN 50 System 2
  • GRP FRP pipes sea water pipe series DN 50 System 3
GRP FRP pipes sea water pipe series DN 50

GRP FRP pipes sea water pipe series DN 50

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Loading Port:
Lianyungang
Payment Terms:
TT OR LC
Min Order Qty:
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.




Q: What kind of material does glass steel ship honeycomb board use?
Analysis of glass steel tube and glass steel tube cellular communication used in communication network construction, is currently used PVC bellows and PVC honeycomb tube, pipe and pipe crossing is the use of plastic pipe or galvanized steel pipe.
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: Why FRP pipe corrosion?
No material was selected. If there is corrosive requirements, it is necessary to use corrosion-resistant materials to make glass fiber reinforced plastic pipe.
Q: The difference between GRP cable duct and PVC cable pipe
PVC cable pipe refers to various kinds of rigid PVC pipes made of PVC resin as main raw material and various stabilizers.
Q: What can be done to solve the leakage of FRP pipe?
The method of mending is hand paste. The stones must be taken away so that the pipes are restored to their original shape. If you can get into the pipe, polish it first and repair the lining.
Q: What is the difference between glass tube, sand pipe and glass tube?
If the thickness of the pipe can meet the requirements of pressure, but can not meet the stiffness requirement, will choose to increase the thickness of sand to meet the stiffness (of course can not directly increase the sand thickness to meet the requirement of stiffness, but the cost is too high). Sand sandwiched glass fiber reinforced plastic pipes only have more than one sand sandwiched with glass fiber reinforced plastic pipes, and sand layer can be understood to replace glass fiber with quartz sand. The sand pipe with the same thickness is compared with the glass fiber reinforced plastic pipe, but the sand holding pipe is cheap, but the strength is poor; and the glass steel pipe is opposite.
Q: How is FRP ventilation pipe made?
It should be noted that the flange and the duct shall be a whole and shall be at right angles to the axis of the wind pipe. The flanges of the air duct and its pipe end shall be formed together during the coating process. Glass fibre reinforced plastic pipe flanges shall conform to the provisions of table 5-21.
Q: What kind of diamond saw blade for cut glass steel pipe?
Glass fiber reinforced plastic pipe is also called glass fiber winding sand pipe (RPM pipe). Mainly to the glass fiber and its products as reinforcing material, polymer composition of unsaturated polyester resin, epoxy resin as basic material, quartz sand and calcium carbonate and other inorganic non-metallic particles as filler materials as the main raw material. The standard effective length of the tube is 6m and 12M, and the production methods include fixed length winding process, centrifugal casting process and continuous winding process of three kinds. Classification can be carried out according to the product process method, pressure grade PN and stiffness grade SN.
Q: What are the posts of glass fiber reinforced plastic sand pipe and the corresponding occupational hazards and protection?
Glass reinforced plastic underground sand pipe has long service life without operation and maintenance, which is the biggest advantage of this product. Since pipe jacking is an underground concealed project, its service life is undoubtedly the very important consideration of decision-makers. The service life of glass fiber reinforced plastic sand pipe jacking is more than 50 years, which is incomparable to the products such as steel pipe, concrete pipe and so on.
Q: How long is the service life of glass fiber reinforced plastic pipes?
The glass fiber reinforced concrete grille is made of three kinds of polypropylene, polyvinyl chloride and ethylene propylene copolymer. The FRP grille is only half the size of the glass, saving transportation, unloading, mounting, and supporting the cost of the frame.

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