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| Home News > Denso Press Releases | ||||||||||||||||||||||||||||||
Densoclad Protection for Dug Well Pipes
In order to give a long-term protection in the saline corrosive environment Bagnall's have applied Denso Primer D followed by Densoclad 70 Tape to each unit. For extra protection Denso Mastic was then applied into the bottom void area of each dug well unit. Densoclad 70 Medium to heavy-duty tape is designed for anti-corrosion protection of medium and large diameter pipes, welded joints, bends and fittings, and is applied over Denso primer. The extremely tough PVC backing combined with polymer bitumen adhesive ensures complete protection and exceptional resistance to damage by impact, poor backfill or aggressive ground conditions. Click Here for more information on Densoclad Tape Wrapping Systems |
Denso Protal Protects Brine Fields Weld Joints
Contractors Murphy Group have used Denso Protal 7000, brush grade, to protect 36 inch butt weld joints at the Stublach double minimum offtake connection into the National Grid NTS pipeline. A main factor that determined Murphy's Group choice od Denso Protal 7000 was that it enabled them to get a required thickness of 800 microns in one application. Denso Protal liquid coatings give effective anti-corrosion properties by forming a firmly bound corrosion inhibiting film on the metal surface, which is covered with a thick, effective physical barrier against air and moisture and remains permantley flexible. The brush grade can be applied by plural Hydrocat spray if required. |
Archco Rigidon Protects Petroplus Caustic Tank
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Denso Protection for Sellafield Xomox Actuators
The actuator housings are made from aluminium and also have steel drive shafts. Two actuators are mounted together with a mild steel box section support frame. All the parts were shot blasted to remove the old paint coatings. They were then spray coated with Denso Galvprime, followed by a Denso Steelcoat System consisting of two coats of Denso ST-Epoxy followed by two coats of a polyurethane-based top coat of Denso Weathershield. All parts were then rebuilt and witness tested to the satisfaction of Sellafield inspectors. |
SeaShield passes 22 Years Service on Scottish Bridge Piles
In 1989 an early version of Denso SeaShield 200 system was installed on a pile at the Kyle of Tongue Bridge. This comprised of Denso S105 Paste, Denso Marine Piling Tape and an Outer Jacket to give mechanical protection which was attached by bolts. Concrete Repairs found that although the outer layer of the Denso Marine Piling Tape had partially dried out over the 22 years, the inner layer still exhibited good protective properties. Furthermore, the steel on the pile under the tape did not exhibit any signs of corrosion. When compared with the condition of an adjacent pile which did not have the SeaShield 200 protection, there was notably less corrosion on the protected pile. The unprotected pile had significant corrosion, particularly in the area exposed above the high water mark. |
Denso Tape Protection for Bridge Tie Bars This latest 1.4km single carriageway road section will give direct access to the A249 from the Eurolink Estate, and connects two sections of the relief road already built by the developers. Completion is scheduled for the end of this year. Denso Tape is a non-woven synthetic fibre fabric impregnated and coated with an adhesive compound based on petrolatum. |
Denso Flashing Tape for Swift Homes
Swifts can live over twenty years and are faithful to their chosen nest site. However, without human assistance it is forecast that within the next twenty years swifts could be extinct. They have been dependant on buildings, particularly roof spaces, since Roman times - evidence from Europe indicates that access for swifts was included in some medieval buildings. With the increased renovation of pre-war buildings the reduction of roof space has resulted in swift numbers declining by 50 per cent since 1990. Added to this, essential maintenance and modern development of buildings is preventing swifts gaining access to their traditional nest sites. Returning swifts finding access blocked to their traditional nest sites may get injured or killed trying to gain access. They cannot 'hope around' looking for somewhere new as the swift does not have legs to walk with, just feet. Fortunately, a growing number of councils are recognising that swifts need to be considered when plans for renovation and new builds are being drawn up. Thus, nest boxes are being installed in buildings and housing stock in areas of London, Glasgow and Cambridge, among others. Thanks to the Mars in the Community Grants Scheme high quality Zeist nest boxes are being produced by the Vale of Belvoir Barn Owl Trust for a subsidised price (e-mail: dbmakin@tiscali.co.uk ). They are protected from the weather by Denso Flashing Tape, which effectively seals all joints. These craftsman made boxes are constructed from marine ply treated with a wood preservative and contain a concave nesting area. Denso Flashing Tape, which is widely used in both new build and housing renovation, has a polyester/aluminium laminate foil backing, which offers major improvements over conventional flashing tapes. This includes greater puncture resistance (useful where birds beaks are in action), improved tensile strength, elongation and shear strength characteristics, all of which accommodate natural movement in service of the joint surfaces without disbonding or splitting.Click Here for more information on Denso Flashing Tape |
Denso Protects Spaceguard Telescope
With the onset of the winter weather the groundwork for the installation of the dome came to a halt. The Schmidt telescope was given temporary protection from the environment by first wrapping the base and fork sections in Denso Tape, followed by Denso Clear Outerwrap. In early March, the same protection was applied to the optical tube section. Denso Tape is a non-woven synthetic fibre fabric impregnated and coated with an adhesive compound based on petrolatum. Once operational the new telescope will also be available to schools and educational establishments throughout Wales and the West Midlands, as well as to any partners in the DRAX project. The Spaceguard Centre receives no funding from external sources at present and relies on income from visitors. The extra funding required for the project will be sought from national, regional and local government and commercial sponsors.Click Here for more information on Denso Tape |
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Water Pipeline Protection at new Peterhead Quay
As part of the scheme new pipelines, which will carry water to a range of vessels using the new quay, required to protect from the corrosive marine environment. To provide the necessary protection Denso stockist's, Burdens (Aberdeen) supplied R J Mcleod with Denso Paste S105, Denso Tape and due to the harsh environment an outerwrap of Densoclad 50 Tape. Denso Mastic strips were also used to protect the bearings of the water pumps on top of the 14 piles that the new quay deck is sitting on. Apart from the additional anti-corrosion protection, Densoclad 50 Tape's extremely tough PVC backing combined with polymer bitumen adhesive ensures resistance to impact and mechanical abrasion likely to be met with on a working quayside. |
Protal Protection Specified for Gas Manifolds
For protection of the manifolds National Gas specified Denso Protal brush coating. This was applied by J M Shotblasting, also of Chesterfield, following Shotblasting to the SA 2 ½ standard. Two coats of Denso Protal were applied to give a total thickness of 1500 microns with a gramophone finish which will give zero gas leakage when connected to a gas main. J M Shotblasting also ensured that prior to coating all flange ends and bolt holes were cleaned out and protected. Denso Protal coatings provide effective anti-corrosion coatings for metals. They do so by forming a firmly bound corrosion inhibiting film on the metal surface and by covering the surface with a thick, effective physical barrier against air and moisture and which remains permanently flexible. A grade is available which can be applied by plural Hydrocat spray. |
Denso Steelcoat System Protects Rural Aqueduct
The aqueduct spans 45m over a river and carries three 25in dia potable water pipes on the underside. It was built in 1898 and is a listed structure. This meant that part of the contract called for the new Denso coatings to be closely matched to the original colours agreed to by the local authority. The water pipes and the underside of the aqueduct were protected with Denso Steelcoat 100 and 400 Tape Wrap systems. The Denso Steelcoat 400 system applied by ITS (following wire brushing to remove previous coatings) consisted of: Hi-Tack Primer, Denso Profiling Mastic, Hi-Tack Tape, Ultraseal Tape, followed by a final two coats of acrylic topcoat. The steelwork on the main structure was protected using Denso Steelcoat 700 system, which consists of Denso ST Epoxy followed by a top coat of Denso Weathershield. Again, the Denso Weathershield was supplied in the special colours agreed to by the local authority to meet the listed structure regulations. |
Densoclad Protects Corus Nitrogen Gas Pipeline
Contractors for the project were Grimsby Pipework Engineering. Approximately 85% of the new gas line is ground mounted on concrete plinths, 10% is at high level, and 5% is buried. Densoclad Tapes consist of a thick polymer bitumen adhesive laminated to a tough plasticised pvc backing. These cold applied tapes are designed for protecting buried or immersed pipes and fittings, as well as giving long-life protection above ground. |
Denso Void Filler Helps Protect Latest Medway Bridge
Denso Void filler has been used to play its part in the anti-corrosion protection of the prestreesed stay cables that support the bridge, which were installed by specialist sub-contractors Freyssinet. The 96 prestressed cables, with a maximum length of 148m, are pregrouted and Fressinet specified Denso Void Filler to provide long life protection to the end caps. Denso Void Filler is a petrolatum compound which contains additives to displace moisture and inhibit corrosion. It can be injected cold or hot, if required, from a heated tank with its own pumping system specifically designed by our in-house engineering division for this application. Denso Tape was also used on this Medway bridge for protection on the supporting Macalloy bars at the side of the bridge. |
Denso Protal stands up to Canadian winters
The project called for five 36 inch diameter fresh air shafts to be bored vertically from the surface into the tunnel. These shafts will also provide equipment access and pump access for emergency evacuation. Denso North America Inc - Canada, was recentley chosen to supply Protal 7250 and Protal 7125 epoxy based liquid coatings to all the exterior surfaces of the vertical steel pipes, each shaft covering distances of nearly 500ft vertically, linking to the horizontal tunnel beneath, each of the five shafts were spaced approximately 13 feet apart along a specific section of the tunnel. Each pipe section was coated in plant with protal 7250 and shipped to site where it was hoisted by crane and lowered into the shaft. Using a collar arrangement to prevent pipe length from slipping down the shaft, each hoisted pipe section was welded in place and lowered into the ground. The girth weld area was brush coated with Protal 7125 and the entire process was repeated until all the sections were finished. The vertical shaft work was completed in the winter months at sub-zero temperatures, hence the use of Protal 7125 which is specially formulated to cure at temperature down to -20°C. |
TOKSTRIP SEALANT CHOSEN FOR ALDERLEY EDGE CULVERTS
According to its size, each culvert was constructed with the use of 21-23 precast concrete box culvert sections supplied by Hanson Culverts., with the Tokstrip sealant being applied to the joints between each section. Maximum dimensions of the Hanson culvert sections used were: 1800mm H x 2400mm W x 2000mm L. Tokstrip has gained an enviable 50 year track record of use within the construction industry. Under compression it deforms through the joints to provide a flexible, watertight seal. When used in conjunction with Tokstrip Primer, Tokstrip meets the European Standard BS EN 1917 for concrete manholes and inspection chambers. To ensure our lead in the market place, we regularly upgrade the product. Only one grade of Tokstrip is now required for all year round use. It is more user-friendly and easier to handle. The standard Tokstrip primer is now faster drying and a clear primer is available for areas where appearance is important. |
SPECIALIST SEALANT FOR SERVICE DUCTS AT NEW MIDDLESBOROUGH HOSPITAL
Sub-contractors Waterseal of Stokesley, near Middlesborough, are sealing over 140 ducts carrying various services into the new buildings using a specialist sealant, Densoseal 16A. This was supplied to Waterseal by local specialist distributor Northern Construction Chemicals. Densoseal 16A is a non-setting, self supporting mastic which may be applied to wet surfaces and will seal ducts and conduits against the ingress of water and Gas. Densoseal 16A complies with British Telecom Specification M212C. It is suitable for sealing ducts, conduits and service entry pipes or sleeves, to prevent entry of gas or water into buildings. It may also be used for profiling mechanical joints on hot pipes to allow application of tapes. |
ARCHCO RIGIDON PROTECTION FOR HOSE COUPLINGS
To meet some customers special advanced anti-corrosion protection requirements, Dunlop Oil & Marine are now internally coating the hose fittings with Archco Rigidon 403D Vinyl ester flake glass filled coating. The work is carried out by contractors Jack Tighe of Scunthorpe, who shot blast the hose fittings before spray application of Archco Rigidon 403D. Click here for more information on the Archco-Rigidon 400 Series Range |
DENSO HI-TACK PROTECTS SWEATING AMMONIA TANKS
The scope of the work included hand tool cleaning the surface, application of a thin layer of Denso Hi-Tack primer and a double layer of Denso Hi-Tack Tape to the tanks and steel support columns. The total surface area protected was approximately 3, 100 Sq. Ft. |
SEASHELD PROTECTION ON NEW CLYDE BERTHING STRUCTURES
The berthing structures interface the vessels with floating linkspans that move up and down with the tide, thereby facilitating traffic movement on and off the ferries. The construction and assembly of the tubular pile legs resulted in exposed areas within the tidal zone that did not receive adequate protective coating. The SeaShield System was specified by Arch Henderson to overcome this problem. SeaShield 2000FD was installed by Clyde Commercial Diving Ltd, beginning with application of Denso Paste S105, Denso Marine Piling Tape and then the HDPE Jackets which were put into position with stainless steel fixings. Denso Marine piling tape, a cold applied petrolatum-based tape for application under water, is the primary anti-corrosion protection in the SeaShield System with a proven 35- year track record. The Jackets will also give abrasion protection for the Tape system. |
DENSO ULTRASEAL AIDS FORTH ROAD BRIDGE DEHUMIDIFICATION SYSTEM
Dehumidification systems have previously been installed as a preventative measure against moisture forming inside the main cables on a new bridge in Japan and on the new Oresund bridge that connects Sweden and Denmark. In its first use in Britain on the Forth Road Bridge is to dry out the inner surfaces of the wire strands that make up the main cable (this made up of 11,618 separate strands), thus removing one of the requirements for corrosion to take place. The consulting engineers for this innovative project are Faber Maunsell, who expect a long protective life for the system. Denso Ultraseal AL Tape is a cold applied self-adhesive tape with a weather und ultra violet resistant aluminium backing. It was specifically developed for the long term protection of above ground pipework and structural steel. Its composition is a high melting point polymer bitumen adhesive to a 40 micron aluminium/polyester laminate with grey weatherproof lacquer finnish. |
DENSO PROTECTION FOR HISTORIC CRANE
Giffords designed a foundation for the original pillar of the Llechwedd crane to go in its new location. The pillar is the original 500mm diameter casting, which has been protected from corrosion with Denso Paste, followed by Denso Tape, before being sunk 2.5 metres into the ground. Denso Tape is a non-woven synthetic fibre fabric impregnated and coated with an adhesive compound based on Petrolatum. In its former days the crane would load the slate that came down from the quarries on narrow quarry wagons to standard gauge rail wagons. Those going north to Llandudno would go through a one and a half miles tunnel, which was then the longest in Britain. Another rail line would take the slate down to Portmadog.Click here for more information on Denso Petrolatum products |
DENSOCLAD 70 CHOSEN FOR 23km PIPE WRAPPING CONTRACT
The larger diameter pipes were wrapped on a motorised rolling specifically designed for fast throughput using Densoclad 70S with rolls of 225mm wide x 60m long tape. Densoclad 70S was used here because is has a stiffer PVC backing to enable it to withstand the greater tension exerted by the motorised rolling rig. The 50mm diameter pipes were also wrapped on a motorised rig, but Densoclad 70, 100mm wide x 60m long was used here. Barrier Ltd reports that customer delivery targets were not only matched but exceeded for each pipe size. Densoclad 70S heavy-duty tape is designed for corrosion prevention of large diameter pipes, welded joints, bends and fittings. The extremely tough PVC backing combined with polymer bitumen adhesive ensures complete protection and exceptional resistance to damage by impact, poor backfill or aggressive ground conditions. Click here For more information on Densoclad Tapes. |
STEELCOAT CHOSEN FOR NORTHUMBERLAND PIPEBRIDGE
The Denso Steelcoat 400 System applied by CPS (following wire brushing to remove previous coatings) consisted of Hi-Tack Primer, Denso Profiling Mastic, H-Tack Tape, Ultraseal Tape, followed by a final two coats of acrylic topcoat. Click here for more information on Denso Steelcoat 400 System. |
ARCHCO-RIGIDON PROTECTS OIL PRODUCTION WATER FILER SYSTEM
The contact was placed with Forsyth and Forblast by Petreco Ltd of Rugby, who was working directly for Azerbaijan International Operating Companies (AOIC). Member companies of AOIC include BP, Statoil and Exxon Mobil, among others.
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DENSOCLAD PROTECTION IN NORTHWICH BRINEFIELD
Densoclad wrapping Tape system was chosen to give protection in this corrosive environment to flange joints for air mains and well heads on 1500m of 2 inch pipework. Densoclad Tape consists of a thick polymer bitumen adhesive laminated to a tough plasticised PVC backing. These cold applied tapes are designed for protecting buried or immersed pipes and fittings and giving long-life protection. |
DENSO PROTECTION FOR WEST WALES BRIDGE
A key feature of the inspection program and subsequent maintenance work entails application of Denso Paste to the whole of the bridge's 64 Macalloy bar assemblies. Denso Paste was chosen because of its good track record in corrosion prevention of engineering, particularly in marine and semi-marine environments, by presenting a barrier to the ingress of moisture, road salts and atmospheric oxygen. Denso paste is a high melting point petrolatum in aromatic hydrocarbon solvent, supplied in a semi-solid state suitable for brush application or hand application. |
DENSO TIE ROD PROTECTION FOR BELFAST AND SAN FRANCISCO
Following application of the Denso Tape, Macalloy then applies Denso PVC self-adhesive overwrapping tape to give extra anti-corrosion protection and resistance to mechanical abrasion while in transit to site. Macalloy also has an interesting export contract which involves application of Denso Tape to post-tension bars which are going to be used for San Francisco ’s Oakland Bay Bridge . A local Californian contractor will apply the final Denso PVC Tape, which will be supplied by Denso North America Inc from it facility in Houston , Texas . Denso Tape is a non-woven synthetic fibre fabric impregnated and coated with an adhesive compound based on petrolatum. |
TOKSTRIP SEALANT CHOSEN FOR SCUNTHORPE STORM WATER SYSTEMS
The storage unit at the overflow is being constructed from Hanson Culverts’ precast concrete box culverts with Tokstrip being specified by Hanson as the sealant. It is being built by sub-contractors Wilmat (who are also applying the Tokstrip sealant) in the form of an 80m line of twin 2.1m x 2.7m culvert sections and a smaller single 50m section. Tokstrip has gained an enviable 50 year track record of use within the construction industry. Under compression it deforms through the joints to provide a flexible, watertight seal. When used in conjunction with Tokstrip Primer, Tokstrip meets the European Standard BS EN 1917 for concrete manholes and inspection chambers. To ensure its lead in the market place, we regularly upgrade the product. Only one grade of Tokstrip is now required for all year round use. It is more user-friendly and easier to handle. The standard Tokstrip primer is now faster drying and a clear primer is available for areas where appearance is important. |
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