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PCB entry sheets
GBS Printed Circuit Board (PCB) entry sheets are manufactured with state-of-the-art equipment which matches international standards.
Tight thickness tolerance, flatness, dimensional accuracy and grease-free surface and hardness optimal for burr-free drilling required in the manufacture of PCB are ensured.
Continuous upgrades and process improvement enable us to keep pace with the demands of its ever-growing clientele.
Dimensions | ||
Parameter | Range | Tolerance |
Thickness (mm) | 0.15 — 0.28 | +/-0.01 |
Width (mm) | 1250 max | +/-1 |
Length (mm) | 2000 max | +/-1 |
Diagonal difference (mm) | - | 2 |
Mechanical properties | ||||
Alloy (AA) | Temper | UTS (mpa) | %E(min) (50mm gauge length) | |
Min | Max | |||
3105 | H18 | 190 | - | 1 |
8011 | H18 | 175 | - | 1 |
1050 | H18 | 125 | - | 1 |
No oil stain on sheet surface |
Chemical composition | |||
Alloy (%) | AA 3105 | AA 8011 | AA 1050 |
Fe | 0.70 | 0.60 — 1.00 | 0.25 — 0.35 |
Si | 0.60 | 0.50 — 0.90 | 0.12 |
Mg | 0.20 — 0.80 | 0.05 | 0.02 |
Mn | 0.30 — 0.80 | 0.20 | 0.03 |
Cu | 0.30 | 0.10 | 0.02 |
Zn | 0.25 | 0.10 | - |
Ti | 0.10 | 0.08 | 0.015 |
Cr | 0.10 | 0.05 | - |
Each (Others) | 0.05 | 0.05 | 0.03 |
Total (Others) | 0.15 | 0.15 | - |
Al | Remainder | Remainder | Remainder3. |
3. Applicable standards
4. Packing
The PCB entry sheets are wrapped with HDPE, hardboard on top and bottom of the stack, hoop iron along the length of the sheets and is placed on wooden skids with runners and finally put in wooden boxes. Silica gel packets for moisture protection are used.
Quality standard:
Excellent adhesion.
Flexible and easy to use.
Superior stability during extreme fluctuations in temperature
Resists water vapor, smoke transmission and other HVAC duct contaminants
Long time static shear.
Our service
1. We have the most convenient transport and prompt delivery.
2. We offer competitive price with best service .
3. We have high technical production line with top quality products.
4. We have win high reputation based on best quality products.