Explosion-proof switch, as the name suggests, is able to be used in the harsh and dangerous explosion environment. Examples include the coal mining industry, paint or ink manufacturers, wood processing plants, cement plants, shipping and sewerage. Need to use explosion-proof switch.
At present, the explosion-proof switch on the market a lot of brands and types, but in the real sense, with excellent explosion-proof performance, safe and reliable quality explosion-proof switch, the market is still relatively small. Among them, the British Bulgin brand is ideal. Bulgin's explosion-proof switch, based on the design of dangerous explosion-proof professional environment, in line with ROHS certification, through specialized testing, suitable for a variety of harsh environments.
Factory explosion-proof electrical explosion-proof control switch which
Such products market demand is also relatively large, so there are more manufacturers, including lighting switches, switches (combination switch), limit switches, cable switches and other small explosion-proof products. Explosion-proof grade of these products up to â…¡ CT6 level, the shell of the explosion-proof shell is usually made of cast aluminum alloy die-casting composite structure, there are a few manufacturers use other materials shell. Such products are characterized by small size, internal components of a single - low technical content, simple structure, easy to make.
Explosion-proof electrical equipment switch and controller of the special technical requirements
DC contact switch, not allowed to make oil immersion structure.
Class I exchange contact switch, only when the rated voltage is higher than 1140V, the poles isolated from each other and contains no more than 5L per pole oil was allowed to make the oil immersion structure.
Class â… electromagnetic switch isolating switch, breaking capacity below JK3 load, to be electrically or mechanically interlocked with the contactor; â…¡ may also set a warning plate instead.
Class â… switch, if there is no short circuit, leakage protection, the protection device action mechanism must be manually reset the form. The resetting device must have special fasteners or may be located inside a protective enclosure. If the controller handle is detachable, be sure to remove it when it is in the stop position.
Class â… oil circuit breaker breaking capacity, should be the actual maximum breaking capacity of 50%.
Due to the harsh working environment of the ship, the hull shell is subject to chemical corrosion of seawater, electrochemical corrosion and corrosion of marine organisms and microorganisms; the hull is subjected to large wind and wave impacts and alternating loads; the shape of the ship is complicated by processing methods, etc. Steel for hull structure is strictly required. First of all, good toughness is the most critical requirement. In addition, high strength, good corrosion resistance, weldability, forming properties and surface quality are required.
Shipbuilding Steels Our hot rolled shipbuilding steel is produced in accordance with the relevant Classification Society, examples of which include Lloyds Register and Det Norske Veritas.
Our steel products include steel shipbuilding plate, fabricated steel sections and floor plate for decking. We can also supply bulb flats for plate stiffening, structural steel angles and inverted angles.
Our plates are supplied under the ASTM/ASME specification (ASTM A131 / ASME SA 131) which is the standard specification for Structural Steel for Ships. We offer higher strength shipbuilding steels as standard .High strength steels offer significant cost advantages by reducing the weight of the structure in comparison to the steel used.
The plates are suitable for use in the construction of container ships and large cargo freighters as well as commercial shipping lines such as luxury cruise ships and ferries. Supply options include heavy plates, surface treated plates and pre-fabricated sections. In most cases, the steel can also be supplied as hot rolled coils or cut into lengths (sheets).
These high yield materials are commonly used in the construction of hulls and superstructures for large shipping vessels. The grades are exclusively for shipbuilding use as set out in the standard.
Ship Building Steel Plate,Shipbuilding Steel Plate,Marine Steel Plate,Shipbuilding Plate
Shandong Guanzhou Iron and Steel Group Co., Ltd. , https://www.guanzhouiron.com