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GB Q620D Q690 Steel Beam
Products Description
Q620D is a quenched and tempered steel used for high-strength structures. The grade of the steel is determined by the first letter of the Chinese Pinyin representing the yield strength, and the minimum yield strength value and quality grade symbols (C, D, E, F) are arranged in order. Example: Q620D. - The first letter of the Chinese Pinyin for the character "Qu" in the yield strength of steel; 620- The numerical value of the specified small yield strength, in MPa; D-quality level symbol.
Q690 belongs to high-strength welded structural steel. Among them, Q represents the yield strength, and 690 represents the yield strength value. The steel plate with different grades after Q690 represents the impact temperature of Q690. The impact of D-grade steel plate is -20 ° C. The impact of E-grade steel plate is -40 ° C. The impact of C-grade steel plate is 0 ° C.Q690D steel has high yield strength and tensile strength, and is widely used in coal mining machinery and engineering machinery.
Product Parameters
|
Product Name |
GB Q620D Q690 Steel Beam |
|
Length |
1000-18000mm or as required |
|
Width |
1500-5500mm or as required |
|
Thickness |
2-300mm or as required |
|
Standard |
AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc. |
|
Technique |
Hot rolled High strength, high yield point |
|
Surface Treatment |
Clean, blasting and painting according to customer requirement |
|
Thickness tolerance |
±0.1mm |
|
Material |
Q235 Q345 Q345R Q620D Q690 Q890 Q960 En10025 SS400 A36 AH36 S235 S235J0 S235J2,etc |
|
Application |
It is mainly used to make structural parts such as car girder, beam, transmission shaft and car chassis parts, which can reduce the weight of the parts. |
Chemical composition comparison:
| S | P | Cr | Mo | Ni | Cu | |
| Q620D | ≤0.035 | ≤0.035 | 0.80～1.10 | 0.15～0.25 | ≤0.30 | ≤0.30 |
| Q690 | ≤0.020 | ≤0.025 | ≤1.00 | ≤0.30 | ≤0.80 | ≤0.80 |
Introduction To GNEE Group Company
With rich and professional experience in steel product marketing, GNEE Group has become a reliable bridge between overseas customers and domestic steel mills. We are committed to strict quality control and thoughtful customer service, adhering to quality first and fast delivery. Our experienced employees can communicate with you at any time to ensure complete customer satisfaction.
We sincerely welcome friends from all over the world to visit our company. We look forward to establishing business relationships and personal friendships with you. If you have steel needs, you can also contact us, and we will patiently answer your questions!
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