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47 lines
2.2 KiB
Plaintext
47 lines
2.2 KiB
Plaintext
---
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title: Hot-Rolled Hot-Dip Galvanized Steel Strip
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desc: Has good mechanical processing performance and corrosion resistance, suitable for construction, granaries and other covering parts and structural parts that require formability and corrosion resistance.
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models:
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- GB/T2518, EN10346: DD(X)51D+Z, DD(X)52D+Z, S220GD+Z, S250GD+Z, S280GD+Z, S320GD+Z, S350GD+Z
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- JIS G 3302: SGHC, SGH340, SGH400, SGH440, SGH490
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place: Jiaxiang Kelunpu Heavy Industry Co., Ltd.
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publishedTime: 2025-10-21
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images:
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- http://kelunpuzhonggong.com/upload/20251021161717.jpg
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detail:
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spec:
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- 'Thickness: 1.8~4.0mm'
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- 'Width: 1000~1540mm'
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- 'Equal-Thickness Coating: Z60-Z275'
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packaging: Regular spangle
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slug: '4'
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---
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## Mechanical Properties
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| Purpose | Grade | Yields strength/Re/MPa | Tensile strength/Rm/MPa | Elongation/A80/% |
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| :--- | :--- | :--- | :--- | :--- |
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| **Commercial** | DDQ(X)51D·Z | — | 270-500 | ≥22 |
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| **Drawing** | DDQ(X)52D·Z | 140-300 | 270-420 | ≥26 |
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| **Structure** | S220GD·Z | ≥220 | ≥300 | ≥20 |
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| **Structure** | S250GD·Z | ≥250 | ≥330 | ≥19 |
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| **Structure** | S280GD·Z | ≥280 | ≥360 | ≥18 |
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| **Structure** | S320GD·Z | ≥320 | ≥390 | ≥17 |
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| **Structure** | S350GD·Z | ≥350 | ≥420 | ≥16 |
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---
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> When there is no obvious yield, use Rp0.2; otherwise, use Rel for low carbon steel and ReH for structural steel.
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## Usage
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| Purpose | Grade | Yields strength/Re/MPa | Tensile strength/Rm/MPa | Elongation/A80/% | 180° bending test (transverse) ≤3.0mm | 180° bending test (transverse) ≥3.0mm |
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| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
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| **Commercial** | DDQ(X)51D·Z | — | 270-500 | ≥22 | 1a | 2a |
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| **Drawing** | DDQ(X)52D·Z | 140-300 | 270-420 | ≥26 | 1a | 2a |
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| **Structure** | S220GD·Z | ≥220 | ≥300 | ≥20 | 2a | 3a |
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| **Structure** | S250GD·Z | ≥250 | ≥330 | ≥19 | 3a | 3a |
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| **Structure** | S280GD·Z | ≥280 | ≥360 | ≥18 | — | — |
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| **Structure** | S320GD·Z | ≥320 | ≥390 | ≥17 | — | — |
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| **Structure** | S350GD·Z | ≥350 | ≥420 | ≥16 | 1a | 2a |
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> When there is no obvious yield, use Rp0.2; otherwise, use Rel for low carbon steel and ReH for structural steel.
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> Surface treatment: Oiling, passivation, oiling + passivation
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