Product properties | Internal Control Standards | ||
±10turns | Copper spikes | None | – |
Crack | Total less than 3cm | – | |
Peel off | Total less than 3cm | – | |
Copper powder(mg) | ≤5mg | ≤15mg | |
Turns until torsion(turns) | Without any bell-shapes or cracks | ≥25 | |
Oxygen content(ppm) | 200-250 | ≤400 | |
Number of flaws detected | (L) | ≤1 | – |
(M) | ≤3 | – | |
(S) | ≤30 | – | |
Number of iron detected | (L) | 0 | – |
(M) | 0 | – | |
(S) | 0 | – | |
Elongation(%) | ≥40 | ≥40 | |
Diameter | 8.0±0.2mm | 8.0±0.4mm | |
Resistance | ≤0.01704 | ≤0.01707 | |
Oxide layers | <600 | – | |
Appearance |
Smooth surface, no burr, no impurities , or other flaws |
Smooth surface, no burr, no impurities or other flaws |
|
Production condition | Blocks in the furnace | none | – |
Cold copper | none | – | |
Stabilitu of copper water temperature | ±5℃ | – | |
Stability of ingot temperature | ±5℃ | – | |
Casting condition | Without significant fluctuations in the level | – | |
Others | Normal and Stable | – |
Our factory and Inventory
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FAQ
Q1: How can I get samples?
A1:Before we receive the first order, please bear the cost of samples and express delivery.
Q2: How to deliver?
A2: We have a perfect logistics service system.
Q3: Does the product support sample/custom service?
A3: We provide sample service and customized service when the purchase reaches the specified quantity.
Q4: Is there any discount?
A4: Yes, we will issue coupons or discounts every month according to the situation. If you are interested, we will give you a channel to get coupons when placing an order.
Q5: How to choose the brands and types of metal materials?
A5: On most product details pages, we will describe the different uses of different brands of materials in tabular form. If you have other problems, We can discuss it further.
Q6: Not sure what kind of metal material is needed?
A6: Please tell us about the use of materials, and we will give you reference suggestions according to different material characteristics.
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