Characteristics of Q235B galvanized angle steel
Advantages of hot-dip galvanizing process
Low processing cost: The cost of hot-dip galvanizing anti-rust is lower than that of other paint coatings, which can effectively reduce the overall cost.
Durable: It has the characteristics of surface gloss, uniform zinc layer, no leakage, no dripping, strong adhesion and strong corrosion resistance. In suburban environments, the standard hot-dip galvanizing anti-rust thickness can be maintained for more than 50 years without repair; in urban or offshore areas, the standard hot-dip galvanizing anti-rust layer can be maintained for 20 years without repair.
Good reliability: The galvanized layer and the steel are metallurgically combined and become part of the steel surface, so the durability of the coating is more reliable.
Strong toughness of the coating: The galvanized layer forms a special metallurgical structure that can withstand mechanical damage during transportation and use.
Comprehensive protection: Every part of the plated part can be plated with zinc, and it can be fully protected even in recesses, corners and hidden places.
Save time and effort: The galvanizing process is faster than other coating construction methods, and it can avoid the time required for painting on the construction site after installation.
Specifications and characteristics
The delivery length of angle steel is divided into two types: fixed length and multiple length. The fixed length selection range of domestic angle steel is 3-9m, 4-12m, 4-19m, and 6-19m according to the different specifications; the length selection range of Japanese angle steel is 6-15m. The cross-sectional height of unequal angle steel is calculated according to the long side width of the unequal angle steel.
Characteristics of Q355B galvanized angle steel
Material characteristics
Q355B is a low-alloy high-strength steel with a yield strength of ≤355Mpa. Its carbon content is between 0.12% and 0.20%, especially 23 higher in manganese than Q235B.
Performance characteristics
Higher strength: The tensile strength is 470-630MPa, while the tensile strength of Q235B is 375-500MPa. The higher strength makes Q355B galvanized angle steel more advantageous when bearing large loads, and can meet the needs of some projects with high structural strength requirements.
Good low temperature resistance: As a low alloy steel, it usually performs better than Q235B in low temperature resistance, and is suitable for use in cold areas or projects with low temperature environment requirements.
Appearance characteristics
From the color point of view, Q355B steel is visible to the naked eye red, while Q235B is visible to the naked eye blue, which can be used as a simple way to distinguish.
Price characteristics
The price of Q355B is generally higher than that of Q235B by about 300 per ton, which is determined by its performance and material cost.
Common use of the two
Q235B and Q355B galvanized angle steel are both commonly used structural steel materials, mainly used in construction, bridges, ships and other fields. However, due to performance differences, designers will choose which steel to use based on factors such as the strength value of the specific environment during design. Generally speaking, Q355B can replace Q235B, but Q235B cannot replace Q355B234.
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The products are widely used in the construction and infrastructure fields, such as bridges, large buildings, highways, tunnels, airports, docks, etc. Steel is an ideal choice for these structures, capable of withstanding heavy weights and strong winds.
