[Beijing] Q235B material galvanized angle # 4 spot

Commonly known as angle iron angle, perpendicular to each other on both sides of a triangle strip steel. There are equilateral angle and unequal angle of the points. Equilateral angle of the two sides equal width. Its specifications indicated by the side edge width × width × millimeters thick edges. Such as "∠30 × 30 × 3", it means that the edge width of 30 mm, edge thickness of 3 mm edge angle. Models can also be said that the model is a few centimeters wide edge, as ∠3 #. Models do not represent different dimensions of the same model edge thickness, and thus the contract documents and other general angle of edge width, edge thickness to fill full-size, avoid using the model number alone. Hot-rolled edge angle specifications for the 2 # -20 #. Angle may require different structures composed of a variety of different force components, but also for connections between components. Widely used in a variety of building structures and engineering structures such as beams, bridges, transmission towers, material handling equipment, marine, industrial furnace, reaction tower, container frame and warehouses. According to the classification process can be divided into hot and cold galvanized angle galvanized angle. Common market is hot galvanized angle. Cold galvanized angle, according to user needs generally require cold plating process. Press the side edge angle can be divided into galvanized and galvanized unequal angle. HDG is divided blow plating and rack plating. Process galvanized angle: angle pickling → washing → → dip fluxing solvent drying rack preheat → → cooling → passivation → washing → polishing → galvanized completed. Galvanized zinc coating thickness uniformity angle, up 30-50um, reliability, between the zinc coating and the steel is metallurgically bonded to become a part of the steel surface, so hot galvanized angle coating durability is more reliable . 1. Hot galvanized angle, also called hot-dip galvanized or hot dip galvanized angle steel angle iron. Rust is the angle about 500 ℃ after immersion melted zinc solution that angle attached to the surface layer of zinc, which play a preservative purposes, suitable for highly corrosive environments of various acids, bases, etc. mist. Angle steel pickling - washing - dip fluxing solvent - drying preheat - rack - cooling - passive - cleaning - polishing - galvanized completed. Galvanized zinc coating thickness uniformity angle, up 30-50um, reliability, between the zinc coating and the steel is metallurgically bonded to become a part of the steel surface, so hot galvanized angle coating durability is more reliable . Hot galvanized angle is the angle of the raw materials, so classified in the same angle. Cold galvanizing process for protecting metal against corrosion, for use of the zinc coating of filler, in any use of a coating method which is applied to the surface to be protected, the filler is formed zinc coating after drying, the dried coating having a content of zinc (95%). Suitable for repair work (ie work in the repair process, the only place to be protected in the steel surface damage, as long as you can re-fix surface coating). Cold galvanized steel products for a variety of processes and structures of corrosion. Cold galvanizing paint primarily through electrochemical principles to corrosion, it is necessary to ensure full access to zinc and steel, generating electrode potential difference, so the steel surface treatment is very important. Before spraying cold galvanizing, select mechanical descaling (sand blasting, shot blasting, etc.), the steel surface cleanliness achieve ISO 85O1-1 Sa 2.5 grade equivalent GB 8923 Sa 2.5 magnitude. Its text is defined as: "After the steel after mechanical descaling, surface no oil, no rust, scale and other dirt, or only slight traces remain; 95% of the steel surface by steel shot (sand) impact, exposing metallic sheen "For another indicator of the quality of the surface treatment - - roughness, different cold galvanized materials require different roughness. Zinc plus (Zinga) construction description, requires an average roughness Ra = 12.5, i.e. roughness Rz = 55 ~ 75 micrometers. In the "strong zinc" and "Luo Balu" construction specification, the requirements of slightly lower roughness, Rz = 40 ~ 60 m. If the cold galvanizing film alone, as the anti-corrosion coating, the surface roughness can be controlled a little smaller, to ensure that cold galvanized coating thickness; and when cold galvanizing as the underlying anti-corrosion coatings, the total matching coat When the thickness is larger than 180 microns, to ensure that the entire coating adhesion, the steel should be greater than the surface roughness Rz of 60 microns. Sales a phone: 022- 86888143 13512866685 QQ: 164514592 022- 86888145 18222701211 QQ: 364845589 Sales two telephone: 022-85558880 13516194188 QQ: 1161693618 022-60763168 15022448665 QQ: 2575623009 Tianjin Katherine Chi Steel billing Information Company Name: Tianjin trillion Chi Steel Trade Co. Tax ID: 120110064015519 Address: Dongli District, Tianjin Road 1002 North Bank and account: Industrial and Commercial Bank of China Dafeng Road Branch 0302016909300196910