Shandong Modern International Trade Co., Ltd.
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GB Standard Q345B Q345C Q345D steel sheet with low alloy made in China
Product Description
Length 2m,2.44m,3m,6m,8m,12m, or as required.
Q345 is a steel material. It is a low carbon alloy steel (c <0.2%), with good comprehensive properties, good low temperature properties, cold stamping properties, welding properties and machinability. Widely used in bridges, vehicles, ships, buildings, pressure vessels, etc. Q stands for the yield of this material. The latter 345 refers to the yield value of this material, which is about 345 MPa. And as the thickness of the material increases, its yield value decreases.
| Chemical Composition/% | |||||
| Material | C | Si | Mn | P | S |
| Q345 A | ≤0.20 | ≤0.55 | 1.00~1.60 | ≤0.045 | ≤0.045 |
| Q345 B | ≤0.040 | ≤0.040 | |||
| Q345 C | ≤0.035 | ≤0.035 | |||
| Q345 D | 0.18 | ≤0.030 | ≤0.030 | ||
| Q345 E | ≤0.025 | ≤0.025 | |||
| Mechanical Property | ||||
| Material | 抗拉T.S | 屈服 Y.S | 伸长率 EL | 冲击功Akv |
| MPa | MPa | % | J | |
| Q345 A | 470~630 | ≥345 | ≥20 | - |
| Q345 B | 20℃ 34 | |||
| Q345 C | ≥325 | ≥21 | 0℃ 34 | |
| Q345 D | -20℃ 34 | |||
| Q345 E | ≥295 | -40℃ 27 | ||
Using continuous casting slabs or preliminary rolled slabs as raw materials, heated by a step-type heating furnace, high-pressure water dephosphorization enters the rough rolling mill, the rough rolling material is cut through the head, tail, and then into the finishing mill, and computer controlled rolling is implemented. After the final rolling, it is coiled by laminar cooling (computer-controlled cooling rate) and coiler to become a straight hair coil. Straight hair curls tend to have tongue and fishtail shapes, with poor thickness and width accuracy, and often have defects such as wave, hem, and tower.
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Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.
Q: How about the delivery terms?
A: 1. Payment: T/T, Western Union, Paypal, 30% deposit in advance and balance before delivery.
2. Min. Order Quantity: 100KG, or as required.
3. Transportation: By express (DHL,TNT,FedEx),air,sea,and train.
Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products,
Modern always makes a serious inspection for all products and raw materials in strict procedure.
Q: How about your after-sales service?
A: As a professional steel exporter, we offer promote technology support for all problems and questions.
Besides, we accept goods return or replace for quality problem.