• GRP FRP Pipes Sea Water Pipe Series DN 400 System 1
  • GRP FRP Pipes Sea Water Pipe Series DN 400 System 2
  • GRP FRP Pipes Sea Water Pipe Series DN 400 System 3
GRP FRP Pipes Sea Water Pipe Series DN 400

GRP FRP Pipes Sea Water Pipe Series DN 400

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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 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 400

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 400

GRP FRP Pipes Sea Water Pipe Series DN 400

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:The role of glass fiber reinforced plastic cooling towers
Thermal power plants usually have cooling towers. Water heating, high pressure gas generated by promoting the steam turbine power generation, and the remaining gas cooling.
Q:Excuse me, what standard does the glass fiber that check mechanical and electrical use accord with GB?
FRP insulated pipe is a kind of light, high strength and corrosion resistant nonmetal pipe.
Q:Underground garage inorganic glass fiber reinforced plastic wind pipe water out of the way?
Condensate water leaking from the interface of the pipe flange: when the pipe carries the airflow, it condenses the water molecules in the air and is concentrated at the lower part of the pipe due to speed, compression and other reasons. When the flange facing the gap is encountered at the low point, it will leak out of the pipe.
Q:How to repair and repair the broken hole of GRE glass fiber reinforced plastic pipe?
Place an iron or glass piece of steel on a broken hole like a bicycle tire, then use three oil, two cloth, or five oil three cloth;
Q:Glass fiber reinforced plastic GRE pipe broken hole how to repair and repair?
Don't let the powder go. It is autumn, the temperature is low, so to put more than summer curing agent, as to the exact proportion, I just guess should be: curing agent, accelerator, resin; 1:1.5:8 with glass fiber wrapped around the pipe, coated on the glass fiber cloth to make glass steel with good quickly, let the glass steel the glass fiber cloth fully soaked, waiting for the full glass steel after curing, and then repeated several layers. It will be strong.
Q:What are the construction methods of glass fiber reinforced plastic paint anticorrosive pipes?
Oil and gas pipelines used for twenty years, basically no corrosion phenomenon. As part of a group of coal tar epoxy primer and topcoat are based on epoxy resin and coal tar as the main film-forming material, add a variety of anti rust paint, insulating filler, toughening agent, leveling agent, diluent, anti settling agents and other materials, the B component is modified amine curing agent or curing agent the main material, adding fillers. When the product is sold, the A and B parts are supplied together, and the mixture is mixed in proportion during construction.
Q:Are there any differences between FRP pipes and FRP pipes?
Air duct is a pipe system used for air transportation and distribution. There are two kinds of composite air duct and inorganic air duct. The duct can be classified according to the shape and material of the section. Duct made of stainless steel duct, in the bite mouth, rivet joint, flange, four corners and other cracks painted with sealant (such as neutral glass glue). Surface dust and grease shall be removed before applying sealant. According to the section shape, the wind pipe can be divided into circular duct, rectangular duct, a variety of flat air pipe, wherein the circular duct resistance minimum maximum height, making complex. Therefore, the application of rectangular wind tube based. According to the material, the air duct can be divided into metal wind pipe, composite air pipe and macromolecule air pipe.
Q:What kind of material does glass steel ship honeycomb board use?
Glass reinforced plastic ships are made of glass fiber reinforced plastic honeycomb panels, and glass fiber reinforced plastic honeycomb panels are composite products developed in combination with aviation industry composite honeycomb panels technology.
Q:Glass fiber reinforced plastic pipe to withstand 1.0MPa pressure, pipe wall to do how much thickness?
This depends on the size of the pipe diameter, the greater the diameter, the thicker the wall.
Q:What is the stiffness of FRP pipe?
The ring stiffness is the comprehensive parameter of the tube's resistance to external pressure. Obviously, the choice of ring stiffness is one of the keys to ensure the safe operation of plastic underground drainage pipe under the external compressive load. If the ring stiffness of the tube is too small, the tube may undergo excessive deformation or buckling failure. On the other hand, if the ring stiffness is chosen too high, the excessive cross section moment of inertia must be used, which will result in too much material and too high cost.

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