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What is the fire-resistant time of steel column under steel structure?
- The steel structure is generally 450 to 650 degrees Celsius in temperature will lose the bearing capacity, big deformation, resulting in steel column and beam bending, the results caused by excessive deformation can't continue to use, generally without steel structure fireproof limit protection for 15 minutes. The length of time is also related to the speed of heat absorption of the component.s
How to distinguish between steel structure materials and structures, steel types and specifications?
- Carbon structural steelAccording to the current national standard "carbon structural steel" (GB700) regulations, numerical grade carbon steel structural yield point represented by the letters Q, yield point (N/mm2), the quality grade of symbols and symbol deoxidization method four parts according to the order.Carbon structural steels are divided into five kinds: Q195, Q215, Q235, Q255 and Q275. The greater the yield strength, the greater the carbon content, strength and hardness of the carbon structure, the lower the plasticity. Among them, Q235 in use, processing and welding performance is better, is one of the steel commonly used in steel structure.Quality grade is divided into A, B, C, D four, from A to D that quality from low to high. Different quality grades of steel require different chemical composition and mechanical properties. A no impact on regulations, only in the cold test only when the carbon, silicon and manganese content can not as delivery conditions; the B level, C level and D level were required to ensure 20 C and 0 C, 20 C Charpy V notch impact energy is not less than 27J (longitudinal), were required to provide assurance of conformity of bending test, as well as carbon, manganese, silicon, sulfur and phosphorus content of warranty. When all steels are delivered, the supplier shall provide the quality assurance of mechanical properties such as yield point, ultimate strength and elongation.s
What is an assembled steel structure?
- An assembly structure: a structure that assembles components in a special workshop and assembles the components at the construction site.Therefore, in accordance with this concept, the steel structure is assembly type, all components are processed in the factory, transported to the construction site for liftings
What kind of steel is used in steel structure?
- In general, Q235 is the most commonly used plant, followed by Q345., Q490 and other high strength steel, but not commonly used.I do steel structure design, often use Q235, and Q345.s
What does nonstandard steel structure mean?
- Non standard equipment is non standard equipment, non-standard equipment is compared with standard equipment (GB, HG, JB and so on national or industry standards) in terms of not in accordance with the unified national industry standards and specifications for manufacturing equipment, but according to their own need to use their own design and manufacture of the equipment. Equipment whose appearance or performance is not in the catalogue of national equipment products.s
The longitudinal force of a steel column supported by a steel column
- Steel structure engineering is mainly made of steel, and it is one of the main types of building structures. The characteristics of the steel is of high strength, light weight, good integral rigidity, deformation ability, it is used in the construction of large span and super high and super heavy buildings especially suitable; homogeneous and isotropic material, an ideal elastic body, the most consistent with the basic assumption of the general engineering mechanics;s
What is the difference between single Bangang structure and composite plate of steel structure
- Single board is a single color steel plate, composite board in accordance with a variety of insulation materials, rock wool, glass fiber, foam materials, composite board insulation, sound insulation effect is good, the price gap is great,s
What are the types of steel structures
- Steel structure is a structure made of steel material, and is one of the main types of building structures. The structure is mainly composed of steel beams and steel plates, such as steel beams, steel columns, steel trusses and so on. Each component or component is usually connected with welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in large factories, stadiums, super high-rise and other fields.s
The Application of Aluminium Panel
- Aluminium veneer is the application of an external coating or other treatment to the aluminium product to improve its resistance to certain conditions, such as weather or to enhanc...
Brief Introduction of Aluminium Coil
- Aluminium coil is rolled after casting in a machine, pulled or bent in the process for metal products.Aluminium coil is widely used in electronics, packaging, construction and mach...
Automotive Aluminum Plates Technology and Equipment
- Automotive aluminum production core technology is in a continuous annealing heat treatment and surface treatment, furnace, hot rolling mill, coiling machine, cold rolling mill and ...
What are the Uses for a Microfibre Cleaning Pad?
- Almost limitless, use it anywhere and everywhere you would use a cotton cloth.Apart from the general cleaning in the kitchen use it on windows, it leaves no steaks.... great...refr...
Thickness of Aluminium Foil
- Aluminium foil is produced by rolling, the same process as for sheet aluminium but to a thinner tolerance. Because aluminium is a soft, ductile metal with silver-white shine and is...