Goods & Services

Steel, unwrought or semi-wrought; iron, unwrought or semi-wrought; iron or steel scraps; iron wire; alloyed iron; steel for tins; steel forgings; steel in sheet, rod, bar or billet form; steel in the form of sheets, plates, foils and reels; steel pipes; steel rails; steel rods; steel sheets; steel wire; tie plates; alloys of common metal; angle irons of metal; armour-plating of metal; balls of steel; blooms [metallurgy]; carbon steels; cast iron pipes; cast steel; clad steel plates and sheets; cold-finished steel bars; galvanized steel sheets; hollow steel bars; hoop iron; hoop steel; titanium iron; tubes of stainless steel; low copper carbon-steel scraps; metal billets; plated steels; rolled and peeled or ground tubes of steel; rolled steels; stainless steel pipes; stainless steels; steel alloys; steel alloys unwrought or semi-wrought; tungsten iron; vinyl coated steel plates; zinc-coated steel sheets; cast iron; armor-plating of metal; steel plates and sheets; steel strip; cast iron, unwrought or semi-wrought; steel tubes; iron strip; bright steel bars; drawn and polished metal bars; peeled metal bars; hot-rolled steel bars; anti-friction metal; metals and metal alloys; ingots of common metal; common metals, unwrought or semi-wrought; common metals and their alloys; tubes of metal; metal tubes for industrial use; metal pipes and tubes; metal pipes and fittings therefor; pipe tubes of metal; pipes of metal; castings, foils, powder, and rolled, drawn or extruded semi-finished articles of nickel or its alloys.

Abstract

Disclosed is a steel frame structure having an earthquake-resistant intermediate moment joint part, the structure comprising: columns for supporting a building; beams joined to the columns by joint parts in a direction traversing the columns; a first plastic hinge part at which the moment-of-inertia capacity of the beam is reduced in the direction of being apart from the joint part of the beam; and a second plastic hinge part at which the moment-of-inertia capacity of the beam is reduced in the direction of being apart from the first plastic hinge part at the joint part. Therefore, even if the intermediate moment structure is implemented, the depth of the beam can be further increased such that application to a building which requires a long span is enabled and the total amount of steel frames reduced.

IPC Classes  ?

• E04H 9/02 - Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
• E04B 1/24 - Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal

Abstract

The present invention relates to a plating composition, a method for manufacturing a plated steel material by using the same, and the plated steel material coated with the plating composition, the composition containing, based on the total weight of the plating composition, 35-55 wt% of Zn, 0.3-2 wt% of Mg, 0.5-3 wt% of Si, and the remainder being Al, wherein the plating composition satisfies mathematical formula 1, 0.9≤Al(wt%)/Zn(wt%)≤1.8 and mathematical formula 2, Si(wt%)

IPC Classes  ?

• C23C 2/12 - Aluminium or alloys based thereon
• C23C 2/06 - Zinc or cadmium or alloys based thereon
• C23C 2/18 - Removing excess of molten coatings from elongated material
• C23C 2/26 - After-treatment

Abstract

The present invention relates to a plating composition, a preparation method for plating steel using the same, and a plated steel coated with the plating composition. The plating composition comprises 30-50 wt% Zn, 2-10 wt% Mg, 0.5-8 wt% Si, and Al which comprises the remainder of a total weight of the plating composition, and satisfies the following formulas: Mg2Si[wt%] < 0.125 × Al[wt%] + Mg2Si[wt%], 1 ≤ Al[wt%] / Zn[wt%] ≤ 1.5, and Si[wt%] < Al[wt%] × 0.03 + Mg[wt%] × 0.7. The present invention controls an internal structure of a plating layer and the size and shape of an intermetallic compound, thereby enabling preparation of the plated steel (Al-Zn-based alloy-plated steel) having excellent corrosion resistance and processability.

IPC Classes  ?

• C23C 2/12 - Aluminium or alloys based thereon
• C23C 2/26 - After-treatment

Abstract

The present invention relates to a solution composition for chemical treatment of trivalent chromium used in a manufacturing process of an electrolytic tinplate steel, a preparation method thereof, and a method for chemical treatment of the electrolytic tinplate steel using the same.

IPC Classes  ?

• C25D 3/06 - ElectroplatingBaths therefor from solutions of chromium from solutions of trivalent chromium
• C25D 3/30 - ElectroplatingBaths therefor from solutions of tin

Abstract

The present invention relates to a method for manufacturing a steel plate that is hot-dip galvanized on side thereof. A galvanization inhibitor includes silicon polyester epoxy resin, butylated melamine resin, black iron oxide pigment, mica, and silica, and a method for manufacturing a steel plate that is hot-dip galvanized on side thereof using a galvanization inhibitor includes coating the galvanization inhibitor on one side of a steel plate, and immersing the steel plate in a hot-dip bath to perform a galvanization process. Since a galvanization inhibitor, the adhesion of which is excellently inhibited and which may be easily removed, is used, the manufacture of a steel plate that is hot-dip galvanized on side thereof is facilitated. Thus, the present invention is advantageous in that manufacturing costs are reduced and a one side hot-dip galvanized steel plate may be easily manufactured.

IPC Classes  ?

• C23C 2/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
• C23C 2/06 - Zinc or cadmium or alloys based thereon
• C23C 2/30 - Fluxes or coverings on molten baths

Abstract

The present invention relates to a plated and coated laminated steel sheet, wherein a plating layer is formed on one side thereof, and a coating layer, including a paint containing a plating-inhibiting component for preventing the formation of another plating layer, is formed on the other side thereof. The plated and coated laminated steel sheet of the present invention is advantageous in that the process for coating same may be shortened, it may be used as a steel plate having various characteristics according to the material that is plated or coated, and it may even be used as a steel plate that is hot-dip galvanized on one side thereof due to the easy removal of the coating layer.

IPC Classes  ?

• C23C 2/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
• C23C 2/30 - Fluxes or coverings on molten baths
• C23C 2/06 - Zinc or cadmium or alloys based thereon
• B32B 15/09 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyesters

Abstract

The present invention relates to a plating composition, a method of manufacturing plated steel material using said composition, and a plated steel material coated with a plating composition. The plating composition of the present invention includes 30-50 wt% of Zn, 2-10 wt% of Mg, 2-8 wt% of Si, and 32.00-65.97 wt% of Al, and an Mg2Si-phase is formed in a plating layer when plating a steel material. The method of manufacturing a plated steel material comprises the steps of: heating the plating composition to form a 550-650˚C molten plating bath; and immersing a steel material in the plating bath to coat the surface thereof with the plating composition, and then cooling the coated steel material at a cooling rate of 5-30˚C/sec to room temperature. According to the present invention, plating is performed using an Al-Zn-based alloy plating composition that includes Zn, Mg, Si, and a balance of Al, and controlling the internal microstructure of the plating layer and the size and shape of intermetallic compounds by controlling the ratio of ingredients, in order to manufacture a plated steel material (an Al-Zn-based alloy plated steel material) with good corrosion resistance, manufacturability, and plated surface properties.

IPC Classes  ?

• C25D 3/44 - Aluminium
• C23C 2/12 - Aluminium or alloys based thereon

Abstract

Disclosed are a hot-dip aluminum alloy plating composition and a method of manufacturing hot-dip aluminum alloy-plated steel using the same. The hot-dip aluminum alloy plating composition includes 5~15 wt% of Si, 3-12 wt% of Mg, and 0.005-0.5 wt% of Sr, with the balance of Al, and forms an Mg2Si phase in a plating layer when the surface of steel is plated therewith. The hot-dip aluminum alloy plating composition further includes Sr, in addition to Si and Mg, so that the [Mg2Si] phase in the aluminum alloy plating layer becomes fine, the shape thereof is changed, and the plating structure becomes uniform, resulting in hot-dip aluminum alloy-plated steel having superior processability, corrosion resistance of a shear surface, and surface gloss.

IPC Classes  ?

• C23C 2/12 - Aluminium or alloys based thereon

Abstract

The present invention relates to a method of manufacturing a colored-steel sheet by using a magnetic force. The method includes performing alkaline degreasing in order to remove foreign substances on a base plate 10 used in a general continuous coating process, performing chromate coating, and forming a chromium coating layer 20; coating a lower paint on the chromium coating layer 20 and forming a lower coating layer 30; and coating an upper paint, which includes iron materials to be attracted by magnetic forces, on the lower coating layer 30, forming patterns on the upper paint by applying magnetic forces to the upper paint, and forming an upper coating layer by heating and drying the upper paint at 210 to 250 °C. It is possible to easily form three- dimensional and various patterns as compared to the method of manufacturing a colored-steel sheet in the related art.

IPC Classes  ?

• C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and