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| Home › News > Denso Press Releases | ||||||||||||||||||||||||||||||
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View Denso press release stories featured in UK publications on Denso Products |  |
Click here to view details of our forthcoming Denso exhibitions and events worldwide |  |
Other important news and announcements |
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 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. |
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, a subsidiary of Winn & Coales International Ltd, was 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. Click here for more information on Protal products |
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 its lead in the market place, Winn & Coales 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. |
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. |
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 Tape was chosen to protect two large ammonia tanks (10ft tall x 40ft long) in a public service facility at Bastrop, Texas. It is one of several utilities provided by the Lower Colorado River Authority (LCRA) in Texas, including electricity and water supplies, water and wastewater utilities, flood management and public parks. Protecting the ammonia tanks had been a continual battle due to constant sweating. After a long period of painting the tanks every three to five tears, the LCRA engineers selected the Denso Hi-Tack Tape coating to give long-term corrosion protection. It was supplied by Denso North america Inc - USA, of Houston, Texas, a subsidiary of Winn & Coales International Ltd. 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. Click here fore more information on Denso Hi Tack Tape/Denso Steelcoat 100 System |
SeaShield 2000FD System was specified by consultants Arch Henderson LLP to give additional protection to a number of legs on the new berthing structures constructed by George Leslie Ltd for Western Ferries (Clyde) Ltd at McInroy's point, Gourock and at Hunter's Quay, Dunoon. The scheme is part of an upgrade by Western Ferries to the vessel loading facilities at their terminal sites on the Firth of Clyde. 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. Click here for more information on SeaShield 2000FD System. |
As part of a £7.8m project to install a dehumidication system to protect the main cables from corroding on the Forth Road Bridge, contractors C. Spencer Ltd are applying Denso Tape and Denso Ultraseal AL Tape to protect the hanger cables at the cable bands. The work is not expected to be completed until early next year. 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 aluminum/polyester laminate with grey weatherproof lacquer finnish. Click Here for more information on Denso Ultraseal Tape/Steelcoat 400 System |
A key feature of the Llechwedd Exchange Sidings industrial archaeological site on the A470 Improvement scheme near Blaenau Ffestiniog is a crane that first saw service in the late 1800s loading slate from the nearby quarries on to railway trucks. The site, which is designated as an area of Special Archaeological Importance has been the subject of a design and build scheme, with Giffords being the designer for the original contractors, Alfred McAlpine, who are now part of Carillion Plc. 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 Winn & Coales 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 and 70S were chosen for the complete protection of some 23km of pipeline lengths in a major wrapping contract just completed by Barrier Limited at wallsend, Tyne & Wear. The pipe lengths, ranging in diameter from 50mm to 500mm, are destined for use in the Cheshire brine fields. 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. Winn & Coales' 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. |
In a refurbishment project for Northumberian Waster, Denso Steelcoat 400 System has been chosen to protect a 180m length potable water pipe carried under a major road bridge. The work has been carried out by contractors Corrosion Protection Services Ltd (CPS) of Jarrow, who expect the Steelcoat System to give 30 years protection to the 10 inch diameter pipe. 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. |
Forsyth Ltd of Rothes, Moray, N.E. Scotland, has just completed the fabrication of five vessels which make up a water disposal media filter system destined for oil production in Azerbaijan. In order to give maximum internal corrosion protection the vessels were first shotblasted and then given a spray application of Archco Rigidon 403D vinyl ester flake glass filled coating. The two largest of the five vessels internally coated have a capacity of 268 cu.metres. The work was carried out by Forblast, who are Forsyth's specialist coating subsidiary company. 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. Once installed in Azerbaijan the Produced Water Disposal Media Filter System will allow significant increase in the production of oil. Click here for more information on Archco Rigidon 403D. |
DENSOCLAD PROTECTION IN NORTHWICH BRINEFIELD Murphy Pipelines Ltd (part of the John Murphy Group) are carrying out Phase 3 of a new development project for Ineos Enterprises Ltd at the Holford Brinefield, Northwich, Cheshire. Winn & Coales' Densoclad wrapping Tape system has been chosen to give protection in this corrosive environment to flange joints for air mains and well heads on 1500m of 2 inch pipework. Winn & Coales' 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. Click here for more information on Densoclad Tape |
DENSO PROTECTION FOR WEST WALES BRIDGE Pembrokeshire County Council's Bridge Engineers carry out annual inspections of the thirty-year-old Cleddau Bridge on the A477 from Pembroke to Milford Haven. A key feature of the inspection program and subsequent maintenance work entails application of Winn & Coales' 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. For more information on Denso Paste click here |
DENSO TIE ROD PROTECTION FOR BELFAST AND SAN FRANCISCO The engineering company Macalloy Ltd of Sheffield is one of the largest regular users of Winn & Coales’ Denso Tape in the North of England. An on-going major contract being carried out by the company is the protective wrapping of M76, M90 and M105 tie bars being used in the construction of Terminal 4 at Belfast Harbour by main contractors McCoughlin and Hannan. Piling contractors at Belfast are Pierce Contracting. 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. For more information on Denso Tape click here |
TOKSTRIP SEALANT CHOSEN FOR SCUNTHORPE STORM WATER SYSTEMS North Midland Construction are the main contractors for Severn Trent Water’s replacement combined storm overflow at Lakeside , Scunthorpe . It is part of the Ashby South Grange UID project, designed to improve local river water quality. The storage unit at the overflow is being constructed from Hanson Culverts’ precast concrete box culverts with Winn & Coales (Denso) Ltd’s 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, Winn & Coales 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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DENSOCLAD PROTECTS CORUS NITROGEN GAS PIPELINE
DENSO VOID FILLER HELPS PROTECT LATEST MEDWAY BRIDGE
DENSO PROTAL STANDS UP TO CANADIAN WINTERS
TOKSTRIP SEALANT CHOSEN FOR ALDERLEY EDGE CULVERTS
SPECIALIST SEALANT FOR SERVICE DUCTS AT NEW MIDDLESBOROUGH HOSPITAL
ARCHCO RIGIDON PROTECTION FOR HOSE COUPLINGS
DENSO HI-TACK PROTECTS SWEATING AMMONIA TANKS
SEASHELD PROTECTION ON NEW CLYDE BERTHING STRUCTURES
DENSO ULTRASEAL AIDS FORTH ROAD BRIDGE DEHUMIDIFICATION SYSTEM 
DENSO PROTECTION FOR HISTORIC CRANE
DENSOCLAD 70 CHOSEN FOR 23km PIPE WRAPPING CONTRACT
STEELCOAT CHOSEN FOR NORTHUMBERLAND PIPEBRIDGE
ARCHCO-RIGIDON PROTECTS OIL PRODUCTION WATER FILER SYSTEM