Q335B Angle Steel Plate

Q345B Angle Steel is hot rolled low-alloy high-strength angle iron manufactured under GB/T 1591-2018 and GB/T 706 standards. Its chemical formula is optimized with Mn microalloying to boost load capacity compared to ordinary Q235 angle steel. Two mainstream types: equal leg angle steel and unequal leg angle steel. It undergoes 20℃ Charpy impact inspection (Grade B), stable mechanical performance under normal temperature dynamic loads, widely used as connecting supports, stiffeners and load-bearing frames in construction, bridge, marine, power and mining industries.

Contact now

1. High strength: The yield strength of Q345B steel is 345MPa, the tensile strength is between 470-630MPa, and the mechanical properties such as wear resistance, tensile resistance and distortion strength are good.

2. Strong corrosion resistance: Q345B steel has excellent corrosion resistance and can be used in a wide range of chemical and Marine environments.

3. Good weldability: Q345B steel has good plasticity and weldability, and can be processed and trimmed by various welding methods.

4. Low cost: The price of Q345B steel is relatively low, and it can replace many high-strength steel grades, so it has a wide range of application prospects in various application scenarios.

5. Excellent comprehensive performance: Q345B steel has excellent comprehensive performance and strong bearing capacity, and can also improve its strength and toughness after heat treatment, control rolling and other processes.

• Hot Rolled Black Surface (standard stock, indoor dry structures)
• Hot-dip Galvanized (coastal, humid outdoor anti-corrosion)
• Anti-rust oil coating for short-term storage

1. Quality problems: Some inferior Q345B steel may have defects such as inclusions, bubbles, cracks, etc., which affect the mechanical properties and service life of steel.

2. Improper design or construction: If the design or construction of Q345B steel is improper, it may lead to problems such as reduced carrying capacity, structural instability, and even lead to safety accidents.

3. Uneven force: If the steel is subjected to uneven force, it may lead to deformation or rupture and other problems.

4. Corrosion problems: Long-term use of Q345B steel is susceptible to natural environment, natural oxidation and external force, resulting in surface corrosion, aging and fatigue fracture and other problems, reduce the service life.

5. Welding problems: For welding Q345B steel, the welding temperature must be controlled and the appropriate welding materials must be selected, otherwise there may be problems such as welding looseness and cracks.

why choose us?

 

Large Spot Inventory: Thousands of tons standard Q345B equal/unequal angle steel in stock for quick shipment.

Flexible Custom Processing: Punching, fixed cutting, galvanization one-stop service as customer drawings.

Professional Structural Technical Team: Provide size selection guidance based on load and service environment.

Global Export Packaging: Steel strip bundling + wooden pallet export packing to avoid transit scratch & deformation.

Get the quotation within 24 hours

one-stop solution

professional team

high quality

our Partners

We trusted by

 

 

 

 

 

 

User Evaluation

We purchased 100×10 Q345B equal angle steel for factory steel frame trusses. High yield strength reduces steel usage, stable welding performance without crack issues.

Mr. Zhao

Shandong Steel Structure Engineering Co., Ltd.

We adopted hot-dip galvanized Q345B unequal angle for coastal wharf guardrails. No rust after one year of salt spray exposure, complete test certificates for project acceptance.

Ms. Lee

Busan Port Construction Company South Korea

We use 70×7 Q345B angle steel for mining equipment brackets. Good impact resistance under mine vibration, stable batch dimensional consistency.

Mr. Ivan

Kuzbass Mining Equipment Factory Russia

FAQ

 

 

01.What's the difference between Q345B and Q235 angle steel?

Q34B is low-alloy high-strength grade with 345MPa yield strength, for heavy-load bridge/tower/mine structures; Q235 ordinary carbon steel only for light indoor frames with lower bearing demand.

02.What types of industries use angle steel plates?

Angle steel plates are commonly used in a wide range of industries, including construction, manufacturing, transportation, and energy. They are particularly useful in the construction of buildings, bridges, and other infrastructure projects, as well as in the production of heavy machinery and equipment.

03.How should I store and handle angle steel plates?

Angle steel plates should be stored in a dry, well-ventilated area to prevent corrosion and rust. They should be handled carefully to avoid damage or bending, and should be stacked flat to prevent warping. When transporting angle steel plates, they should be securely fastened to prevent sliding or shifting during transport.

04.What are the different types of angle steel plates?

There are several different types of angle steel plates, including equal angle steel plates, unequal angle steel plates, hot-rolled angle steel plates, cold-rolled angle steel plates, galvanized angle steel plates, and stainless steel angle steel plates. The type of angle steel plate used will depend on the specific needs of the project.

Hot Tags: q335b angle steel plate, China q335b angle steel plate suppliers