GRP FRP pipes sea water pipe series DN 40

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100 pc
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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 40

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 40

GRP FRP pipes sea water pipe series DN 40

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: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:Are FRP pipes still developing?
Although high-end composites have all sorts of benefits, glass tubes can replace traditional plumbing materials, at least far away.
Q:The difference between FRP process tubes and GRP tubes
Process tubes are mostly pure glass steel, not sand, and sand pipe, of course, is added sand.
Q:How to install FRP pipe correctly
Field bonding process is usually provided by glass fiber reinforced plastic manufacturers, if there is no way, I can provide some experience for reference, there is little information, experience only.
Q:How to open a DN300 port on the DN600 GRP pipe and install the DN300 gate?!
Do not know the road of glass steel flange have, if any to buy different materials of cast iron flanges or PVCU flange on the same material, the three way behind the pipeline branch, so that the material market has purchased (ABS buy buy in the small town is not easy), the construction is convenient. If it is a glass steel pipe, pipe end cannot change, can only be used to bond the glass steel material, the pipe bonded on the flange is an arc for a plane is bonded with a cast iron pipe flange suggestions. Because the FRP material and most of the plastic are not bonded.
Q:What is the standard of flange coefficient for FRP ducts?
That quota said: glass steel duct, pipe fittings, flange and reinforcing frame are in accordance with the finished preparation, only the wind pipe and the valve flange connection, before the implementation of the equipment support within the 20kg section, multiplied by the coefficient 1.4. Glass fiber reinforced plastic wind pipe is finished product: when it is made, there are moulds. According to the design of the drawing, the mould is made. The flange and the air duct are one! Remove the mold and install the hole on the flange! In general negotiations with the manufacturers directly n yuan / square meter (production, installation), whether it involves the number of flanges, such as included, there is no need to re count, direct calculation of the inner diameter of the air duct is the expansion area!
Q:Mending method for glass fiber reinforced plastic pipe
The method for mending and mending the glass fiber reinforced plastic pipe is hand paste, and the repairing steps are as follows:The stones must be taken away so that the pipes are restored to their original shape.Into the pipe, grinding first and lining the lining. If you can't get into the pipe, polish it from the outside, polish it to the lining, and then make a new lining.Reinforce the structure with a cloth.
Q:What are the main points for the installation of FRP ducts?
Organic pipe basically no sales, mainly too expensive, rather than bad, and now most of them are inorganic pipe, or white iron pipe, there is a kind of polyurethane, but rarely used
Q:What are the specifications of glass fibre reinforced plastic cable pipes? What are they?
FRP cable pipe is a new type of composite material, it mainly resin as adhesive, glass fiber as reinforcing agent, quartz sand as the supplementary material, formed by microcomputer control winding machine manufacturing, it has the strength of resistance to high pressure, weight, easy installation, safe and reliable, strong performance of insulation, corrosion can be anti corrosive the items, the anti parameter Water Leakage ability, but also has the advantages of long service life, can reach more than 50 years, because the FRP cable protection pipe set has various advantages of the industry, the performance has exceeded the same industry plastic pipe performance, it becomes popular industry engineering personnel.
Q:Is the installation of FRP pipes required qualification?
Generally speaking, the glass steel pipe manufacturers will be installed for shipyard workers training, but if the shipyard did not ask, the training goal is to allow workers to master the skills to install, but they do not grant workers qualification certificate, but some shipyard will require workers engaged in installation with the installation qualification, so manufacturers will end in training workers to master confirmation the installation skills of workers, awarded the class approved qualification certificate. I don't know. Are you clear about that?.

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