1.Poor corrosion resistance of steel: corrosion, cross-sectional weakening, so that structural damage, steel in high humidity, aggressive media environment, is likely to affect the life, and thus the need for regular maintenance of steel.
2.Ductility and toughness of steel: Steel Works under static loads, steel has good plastic deformation.
3.Steel manufacturing factory, construction assembly: the small site area, short construction period, the lighter components, to facilitate the construction, but also easy to dismantle, reinforcement and expansion.
4.Steel plant has no leakage characteristics: whether the use of welding, riveting or bolting, steel can be done without leakage sealed.
5.Steel has good weldability: welding performance called "good" means after the steel during welding and soldering, can maintain the integrity of the nature of the welding part is not cracking.
6.Close to the homogeneous isotropic steel nozzle body: each piece will have substantially the same mechanical properties, and performance of each direction is roughly the same, the steel structure is divided into fine pieces, are the basis of solid mechanics.
7.Steel housing is light weight high capacity: are lightweight, high strength materials.
8.Good heat resistance of steel, but poor fire performance: strength and plasticity changes are great, to reach 600 ℃, the intensity drops to zero, completely lost carrying capacity, improve the fire resistance rating of steel, concrete or brick used half the structure wrapped up, it can be coated with fireproof coatings, fireproof coating thickness 15mm profile, the fire resistance of steel components up to 1.5h. Experiments show that steel from room temperature to 150 ℃, the performance changed little over 150 ℃ after.
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