GRP Pipes - Plastic Pipes
Captrad has a wide range of GRP Pipes and associated fittings
The main market for GRP Pipes, (fibreglass reinforced polyester) is in the public and industry, as follows:
- Sewerage systems and sewage treatment (urban and industrial)
- Distribution of drinking water (public and industrial)
- Supply cooling water systems
- Industrial processes
- Transport and desalinated seawater
- Transporting petroleum products
- Gas transportation pipes
- Transportation of various chemical solutions with temperatures up to 100 C.
GRP Pipes are Corrosion resistant and chemical mechanical (especially acids), making Captrads GRP pipes an ideal solution for wastewater disposal systems and drainage and other fluids difficult. This is combined with high mechanical resistance created by reinforcing glass fibre polyester resin.
High corrosion resistance combined with quick and easy installation (underground, surface, even underwater), makes Captrads GRP Pipes an excellent choice for most areas of use.
GRP filament wound pipe can be supplied in diameters from 250mm to 1200m in lengths up to 12m. The pipes can be supplied with plain or built-up ends to take a range of proprietary joint systems. All the pipe sizes can be supplied to BS, EN, and ASTM standards for pressure rating and pipe stiffness and in orthophthalic, isophthalic polyester, or vinyl ester resin depending on the chemical or corrosive service conditions.
The pipe manufacturing process is in two stages, both fully computer-controlled. First, an inner layer of the pipe (chemical barrier) with thicknesses of between 0.3 and 5.0 mm is laid onto the rotating mandrel and cured to the gel stage. The detailed construction and thickness of the barrier layer depend on the nature of fluid flowing through the pipe and pipeline operating conditions (free flow, turbulent suspension content, and so on).
Then the filament wound structural layers are applied. Fibreglass rovings impregnated by passing through a resin bath are wound at a controlled helical angle onto the rotating mandrel. The winding is bidirectional. Applying successive layers at the set angle continues until the designed thickness is achieved. The winding angles are chosen to provide suitable resistance to applied stresses in the two principal directions (axial and circumferential).
For pipes installed above ground, a special external layer is applied to ensure protection from UV, weathering, and external corrosive agents.
GRP filament would pipe offer a number of advantages over steel and concrete pipes including:
- Corrosion-resistant Resistant to attack by most chemicals (with correctly selected resin)
- Does not rust
- No need for cathodic protection
- Smoothbore reduced pumping costs
- Low maintenance costs
- Lightweight frac14; the weight of steel, 1/10 weight of concrete Can be made and handled in long lengths (up to 12m)
- Reduced transport costs
- Easy to install, less heavy lifting equipment required
- Fewer joints - faster to install and fewer leakage issues at joints
GRP Pipe Sizes
Pipe pressure ratings and stiffness
Pipes can be made to one of several pressure ratings up to 32 bar. Internal pressure imposes both hoop and longitudinal force on the pipe wall so the filament winding pattern and wall thickness are adjusted to carry these forces.
Pipes can also be subject to negative pressure and, in buried pipes, from ground pressure.
The BS EN standards give recommended pipe wall stiffness ratings for different service conditions.
All the pipe diameters listed above are available in any combination of pressure ratings PN1, 6, 10 & 16 with stiffness factors SN2500, 5,000 and 10,000.
Selected pipe diameters can be supplied in pressure ratings PN 20, 25 and 32
Pipes can be supplied either plain ended to take a proprietary joint such as Viking Johnson or with a double ring sleeve coupler, (Reka type joint)
Laminated flanged ends can be built into the pipes and fitted with either steel or GRP flange rings.
All these joints carry the same pressure rating as the pipe itself.
A comprehensive range of fittings can be supplied to match the pipes for both pressure and stiffness ratings.
The fitting is made from sections of pipe cut and laminated together. Bends of different radii and swept angles, reducers, Tee&rsquo's, and Y’s can all be manufactured to suit customers' requirements. The joint detail of the fittings matches those of the pipe.
The high impact performance of CAPTRAD PETG allows the use of thinner-gauge sheet than with some other common materials, resulting in lower material costs. It is very easy to fabricate and vacuum form which makes it ideal for a whole range of applications.
CAPTRAD Polycarbonate is virtually unbreakable and with its excellent optical and weathering properties, its the material of choice for safety glazing.
Fiberglass panels can be used for many applications from Schools, Offices to Mobile Homes. Our fibreglass panels are easy to work with and can adapt to any given environment.
GRP Cabinets - Roadside Cabinets
GRP Roadside Cabinets are IP55 rated as standard and can be produced to IP65 depending on customer requirements. Our single door GRP Roadside Cabinets offer quality small housing at an affordable prices.
As GRP Enclosure specialists, we are able to adapt to any customers requirements when it comes to GRP Enclosures. Our GRP Enclosures are designed and built to meet any requirement.
GRP Fencing offers excellent non conductive properties and can be used in standard areas as an alternative to metal or case sensitive areas were metal is unacceptable. GRP Palisade fencing produced in various heights, widths and colours.
GRP Flat Sheets
GRP Flat Sheets can be used in a wide range of applications from the Construction Industry, infill panels, balcony cladding, school cladding to fascia panels. We can produce our GRP Panels to virtually any colour.
GRP Grating - Moulded Grating
GRP Moulded Grating and fibreglass moulded grating provide an efficient and cost effective solution for all flooring, walkways and decking areas requiring long term performance.
Our GRP handrails have been developed to meet certain Building Regulation requirements as well as offering a unique, extremely strong GRP Handrail system. Our GRP Handrails are available on next day delivery.
GRP Handrails - Key Clamp
GRP Key Clamp Hand Rail Systems are designed and tested according to the relevant standards. GRP Modular Handrails are designed to satisfy all in terms of performance and the reduction of installation and costs. GRP Key Clamps are available for next day delivery.
GRP Moulded Products
Captrad produce a wide variety of GRP moulded products from one offs to production line products. We can produce vehicle parts to cladding systems. GRP mouldings are a versatile product to work with.
GRP Non Slip Sheets
Our GRP anti-slip products are suitable for a multitude of applications from offshore oil rigs, underground installations to slip resistant walkways and ramps. GRP Non slip products can be GRP Stair Treads, GRP Stair Nosings, GRP Sheets.
GRP Panels & Composite Panels can be used for many applications from Schools, Offices to Mobile Homes. Our GRP Panels are easy to work with and can adapt to any given environment.
Captrad can offer a comprehensive range of GRP Planters and GRP Plant Pots including several different styles with numerous sizes to choose from.
GRP Profiles - Box Section
GRP Box sections are suitable for any structural project. Available in various sizes, lengths, colours and resins depending upon the application.
GRP Profiles - Channel
GRP Channels are suitable for any structural project. GRP Channels are available in various sizes, lengths, colours and resins depending upon the application. All our fiberglass channels are made from glass reinforced isophthalic polyester resin with a polyester surface veil.
GRP Profiles - I Beams
GRP I-Beams are suitable for any structural projects. GRP I-Beams are available in various sizes, lengths, colours and resins depending upon the application. GRP I beams are produced to EN23 specification.
GRP Sheets can be used in a wide range of applications from the Construction Industry, infill panels, balcony cladding, school cladding to fascia panels. We can produce our GRP Panels to virtually any colour.
GRP Stair Treads
GRP Stair Treads produced in various colours and held in stock, provide a full covering for the whole stair and landing area, offer extreme slip resistance due to the carbon grit which is chemically bonded to the top surface. Call 01695 280510 today.
GRP STAIRS can be produced bespoke to customer designs and meet all the British Standard regulations. GRP Stairs are very adaptable and can be installed quickly and cost effectively.
GRP Uni Strut
GRP Uni-Strut Type Profiles can be used in a variety of applications available in 3m & 6m lengths and in various resin systems. We can also supply the half strut.
Captrads GRP Fencing offers excellent non conductive properties and can be used in standard areas as an alternative to metal or case sensitive areas were metal is unacceptable.
Stair Tread Covers
Stair Tread Covers provide a full covering for the whole stair and landing area, offer extreme slip resistance due to the carbon grit which is chemically bonded to the top surface.
WPC cladding and decking products can enhance any working environment. Our Wood-Plastic Composite (WPC) hard wood decking material is manufactured from a combination of plastic, natural fibers and special additives.
What Our Customers Say
Here at Captrad we are very proud of the service we provide and stand by every GRP product we provide.
Don't believe us? here are some kind words from our clients.
Captrad’s product knowledge and customer service are second to none.
We have been working with Captrad Ltd for over 16 years and they have provided an excellent service throughout this time.
Due to the stock levels, Captrad Composites hold we are able to have next day deliveries.
We have been dealing with Captrad for over 10 years and found their products to be of an exceptional standard.
Their next day service allowed us to facilitate our customers’ needs.
Captrad helped supply the correct products efficiently, on time and at the right price.
Communications with Captrad are excellent and allowed us to schedule our onsite work with ease.