| BLUESCOPE STEEL LIMITED Patent applications |
| Patent application number | Title | Published |
|---|
| 20120088115 | CORROSION PROTECTION WITH AL / ZN-BASED COATINGS - Red rust staining of Al/Zn coated steel strip in “acid rain” or “polluted” environments can be minimised by forming the coating as an Al—Zn—Si—Mg alloy coating with an OT:SDAS ratio greater than a value of 0.5:1, where OT is the overlay thickness on a surface of the strip and SDAS is the measure of the secondary dendrite arm spacing for the Al-rich alpha phase dendrites in the coating. Red rust staining in “acid rain” or “polluted” environments and corrosion at cut edges in marine environments can be minimised in Al—Zn—Si—Mg alloy coatings on steel strip by selection of the composition (principally Mg and Si) and solidification control (principally by cooling rate) and forming Mg | 04-12-2012 |
| 20110308184 | FIXING SYSTEM AND METHOD - A method of fixing overlaying components together, comprising the step of piercing nails having a profiled shank through the components to fix those components together. Structures including metal sheet are also disclosed which utilize this fixing technique. The structures include composite wall panels used in tilt up wall panel construction. | 12-22-2011 |
| 20110268984 | METHOD OF CONTROLLING SURFACE DEFECTS IN METAL-COATED STRIP - A method of controlling “rough coating” and “pinhole-uncoated” surface defects on a steel strip coated with a aluminum-zinc-silicon alloy. The alloy has 50-60% wt Al, 37-46% wt Zn and 1.2-2.3% wt Si. The method includes heat treating the steel strip in a heat treatment furnace and thereafter hot-dip coating the strip in a molten bath and thereby forming a coating of the alloy on the steel strip. The method is characterized by controlling the concentration of (i) strontium or (ii) calcium or (iii) strontium and calcium in the molten bath to be at least 2 ppm. | 11-03-2011 |
| 20110168728 | INTERNAL TIE FOR A FLUID STORAGE TANK - A fluid storage tank having opposite upper and lower ends, a tank wall extending between the ends, and an internal tie assembly to assist the tank wall to resist hydrostatic pressure induced by fluid in the tank, the internal tie assembly comprising an elongate tie having spaced apart couplings, and a plurality of retaining formations fixed to, or integrally formed on, an inner surface of the tank wall, wherein the couplings of said tie are arranged to be received in respective ones of said retaining formations to connect said tie to said tank wall so that said tie is able to resist outward deformation of said tank wall. | 07-14-2011 |
| 20110154768 | COMPOSITE PANEL, CONNECTOR AND RELATED METHOD - A composite panel comprising a layer of hardened settable material, at least one element bonded to and/or embedded in the settable material, and one or more connectors fixed to the at least one element, the or each connector comprises a coupling portion that is disposed at a surface of the panel and arranged to form one part of a load bearing coupling, wherein loading induced at the coupling is arranged to be transferred through the connector to the element. | 06-30-2011 |
| 20110154766 | PANEL ASSEMBLY, COMPOSITE PANEL AND COMPONENTS FOR USE IN SAME - A profiled panel ( | 06-30-2011 |
| 20110154747 | PANEL CONSTRUCTION - A panel comprising one or more decking members is arranged such that a settable material can be supported thereon to form a composite panel. The panel further comprises one or more elongate strengthening elements, each element being arranged to connect to the one or more decking members in a manner such that the one or more elements increase panel strength. | 06-30-2011 |
| 20110052936 | METAL-COATED STEEL STRIP - An Al—Zn—Si—Mg alloy coated strip that has Mg | 03-03-2011 |
| 20110027613 | METAL-COATED STEEL STRIP - An Al—Zn—Si—Mg alloy coated strip that has Mg | 02-03-2011 |
| 20110011834 | LINEPIPE STEEL - A method of producing coil plate on a hot strip mill is disclosed. The method includes coiling hot rolled coil plate strip at a temperature that is selected (a) to minimize precipitation of Cr/Mo carbides or (b) so that any Cr/Mo carbides that form are sufficiently fine that they go into solution in any subsequent heat treatment of coil plate made from the strip. | 01-20-2011 |
| 20100316805 | METAL-COATED STEEL STRIP - A coating of an Al—Zn—Si—Mg alloy on a steel strip that is applied by a hot dip process and is subsequently heat treated to improve the ductility of the coating. | 12-16-2010 |
| 20100310803 | COMPOSITE PRODUCTS AND METHODS OF MAKING SAME - A method of forming a polymeric component on a body is disclosed which includes the steps of casting a fluid polymeric material onto the body whilst providing support for the body. The method has particular application to casting components on metal pipes and the like. | 12-09-2010 |
| 20100266866 | METHOD OF METAL COATING AND COATING PRODUCED THEREBY - A method for coating a metal substrate, such as a steel strip, is disclosed. The method comprises vapour or electro-depositing an alloy control material, as described herein, onto the substrate and passing the substrate through a bath of molten coating material and forming a coating of the coating material onto the deposited alloy control material. | 10-21-2010 |
| 20100258974 | MOULDING PROCESS AND APPARATUS - A mould for casting a component onto a body comprising first and second mould parts arranged to be disposed on respective ones of the opposite sides of the body. At least one of the parts defines at least a portion of a mould cavity that is in communication with the body to allow for casting of the component on to the body. The mould has particular application to direct casting of polymeric couplings on to pipe ends. | 10-14-2010 |
| 20100147845 | FITTINGS FOR WATER STORAGE TANK - Fittings for a water storage tank are disclosed. The fittings comprise an inlet sub-system ( | 06-17-2010 |
| 20100047608 | CLADDING SHEET - A cladding sheet that is adapted to engage one or more than one concealed clip that is connected to an underlying structure is disclosed. The cladding sheet includes at least one lengthwise extending pan ( | 02-25-2010 |
| 20100021760 | METAL-COATED STEEL STRIP - A steel strip having a coating of an aluminium-zinc-silicon alloy on at least one surface of the strip is disclosed. The strip is characterised in that the aluminium-zinc-silicon alloy contains less than 1.2 wt. % silicon and also contains magnesium. A method of forming a coating of an aluminium-zinc-silicon alloy on a steel strip is also disclosed. The method includes moving steel strip upwardly through a coating pot containing a bath of an aluminium-zinc-silicon alloy and having an opening in a bottom wall of the pot and forming a coating of the alloy on the strip. The method is characterized by minimizing residence time of steel strip in contact with the aluminium-zinc-silicon alloy bath in the pot. | 01-28-2010 |
| 20090269611 | METAL-COATED STEEL STRIP - A steel strip having a coating of a metal alloy on at least one surface of the strip is disclosed. The metal alloy contains aluminium, zinc, silicon, and magnesium as the major elements. The metal alloy also contains strontium and/or calcium and unavoidable impurities and optionally other elements that are present as deliberate alloying elements. The concentration of magnesium is at least 1 wt. % and the concentration of (i) strontium or (ii) calcium or (iii) strontium and calcium is greater than 50 ppm. | 10-29-2009 |
| 20090199934 | TREATING AL/ZN-BASED ALLOY COATED PRODUCTS - A method of treating an Al/Zn-based alloy coated product that includes an Al/Zn-based alloy coating on a substrate is disclosed. The method includes the steps of rapid intense heating of the alloy coating for a very short duration, and rapid cooling of the alloy coating, and forming a modified crystalline microstructure of the alloy coating. | 08-13-2009 |
| 20090114655 | WATER STORAGE TANK - A water storage tank is disclosed. The tank comprises an outer shell ( | 05-07-2009 |
| 20090104069 | LINEPIPE STEEL - A method of producing coil plate on a hot strip mill is disclosed. The method includes coiling hot rolled coil plate strip at a temperature that is selected (a) to minimise precipitation of Cr/Mo carbides or (b) so that any Cr/Mo carbides that form are sufficiently fine that they go into solution in any subsequent heat treatment of coil plate made from the strip. | 04-23-2009 |
| 20090100776 | FORMWORK - An elongate formwork element for use in the construction of a concrete floor is disclosed. The formwork element includes a base wall ( | 04-23-2009 |
| 20090049778 | WALL CONSTRUCTION - A tilt-up wall panel for use in the construction of a building is disclosed. The panel includes a composite slab that includes (a) a profiled decking sheet and (b) concrete cast on the profiled decking sheet. | 02-26-2009 |
| 20090011277 | METAL-COATED STEEL STRIP - A steel strip having a metal coating on at least one surface of the strip is disclosed. The strip is characterised in that the coating includes aluminium-zinc-silicon alloy that contains magnesium and the coating has small size spangles. | 01-08-2009 |
| 20080295902 | WATER RETENTION/DETENTION SYSTEM - An underground water retention or detention system for collecting stormwater, rainwater, sewerage, effluent or other waters, and controlled release of the water is disclosed. Typically, the tanks are formed from a plastics or polymeric material such as high density polyethylene. The pipes may be polymer coated corrugated steel pipes. Tanks suitable for use in the water retention and detention systems are also described together with connection fittings for connection of pipes to the tanks. Generally, the connection fittings are adapted to provide structural support to perimeter walls of the tanks about respective openings formed in the tank for the connection of the pipes. | 12-04-2008 |
