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Help CenterAs-Forged DT4 Pure Iron Round Bars With Mill Test Report (GB/T 701 Surface)
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Shanxi Jurun Technology Co., Ltd., located in the heart of China's steel industry in Taiyuan, specializes in manufacturing premium DT4 Pure Iron Round Bars. Our as-forged products combine exceptional magnetic properties with mechanical integrity, making them ideal for precision electromagnetic applications. Each bar comes with a verifiable Mill Test Report, ensuring traceability and compliance with GB/T 701 surface standards.
DT4 Pure Iron stands out for its minimal impurities (≤0.025% carbon content), delivering:
- High magnetic permeability (μmax up to 150,000)
- Low coercivity (≤32 A/m)
- Reduced hysteresis losses (≤1.5 J/kg)
Technical Specifications:
| Diameter Range | Φ10mm - Φ300mm |
| Length | 1000-6000mm (±10mm) |
| Density | 7.87 g/cm³ |
| Resistivity | 0.1 μΩ·m |
The forging process enhances material homogeneity and directional properties critical for:
- Transformer cores
- Relay components
- MRI shielding
- Precision sensors
Our manufacturing control ensures:
- Surface roughness Ra ≤ 3.2μm
- Straightness tolerance: 1mm/m
- Chemical composition certified per MTR
As a Taiyuan-based manufacturer, we leverage regional metallurgical expertise to guarantee material authenticity. The included Mill Test Report provides traceability through:
- Heat number verification
- Third-party testing availability
- Full chemical analysis records
FAQ Section:
Q: What is the minimum order quantity?
A: Standard MOQ is 5 metric tons, with smaller quantities available for sample requests.
Q: Can you provide custom diameters outside the standard range?
A: Yes, we offer custom extrusion tooling for diameters from Φ8mm to Φ350mm.
Q: How does DT4 compare to ARMCO iron?
A: DT4 offers comparable magnetic properties with typically lower eddy current losses due to controlled carbon content.
Q: What packaging options are available?
A: Standard export packaging includes waterproof wrapping on wooden crates with corner protection.
Q: Is the GB/T 701 certification recognized internationally?
A: While GB/T is a Chinese national standard, equivalent international certifications can be provided upon request.
Q: What is the lead time for 20-ton orders?
A: Standard lead time is 25-30 days from order confirmation.
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