| PVC pipe vacuum calibration tank | ||||
| Model | Pipe Diameter(mm) | Vacuum Pump(kw) | Water Pump(kw) | Lenth(mm) |
| GF 32*4 | 16-32 | 4.0*1 | 1.5*1 | 4500 |
| GF 63*2 | 16-63 | 4.0*2 | 4.0*2 | 5000 |
| GF 160 | 50-160 | 5.5*1 | 4.0*2 | 6000 |
| GF 250 | 63-250 | 5.5*1 | 5.5*2 | 6000 |
| GF 400 | 160-450 | 5.5*2 | 5.5*2 | 6000 |
| GF 630 | 315*630 | 7.5*2 | 7.5*2 | 9000 |
HDPE pipe vacuum calibration tank | ||||
| Model | Pipe Diameter(mm) | Vacuum Pump(kw) | Water Pump(mm) | Length(mm) |
| PE63 | 16-32 | 2.2 | 3.3 | 6000 |
| PE125 | 32-125 | 4 | 5.5 | 6000 |
| PE250 | 63-250 | 4 | 5.5 | 6000 |
| PE450 | 110-450 | 4*2 | 5.5*2 | 6000 |
| PE500 | 160-500 | 4*2 | 5.5*2 | 6000 |
| PE630 | 250-630 | 4*2 | 5.5*2 | 6000 |
| PE800 | 315-800 | 5.5*3 | 7.5*3 | 3000+6000 |
| PE1200 | 630-1200 | 4*6 | 7.5*6 | 3000+6000 |
Vacuum System: Equipped with a high-efficiency vacuum pump (oil-sealed rotary vane type) offering -0.06 to -0.09MPa adjustable pressure. The vacuum pressure is controlled via a proportional valve, ensuring stable adsorption force across the entire length of the calibration sleeve—preventing pipe deformation (e.g., ovality) caused by uneven pressure. A vacuum buffer tank is also included to reduce pressure fluctuations, further improving shaping stability.
Cooling Capacity: Multi-section water tank (with 2-4 sections, total length 10-30m) featuring a counter-flow cooling design—where cooling water flows in the opposite direction of the pipe, maximizing heat exchange efficiency. The cooling water flow rate is adjustable from 20-50m³/h, and the water temperature is controlled via a chiller (maintaining 15-25℃) to ensure uniform cooling of the pipe (temperature difference between pipe inner and outer walls ≤5℃).
Calibration Sleeve: High-precision steel sleeve (made of 45# steel, chrome-plated) with Ra 0.8μm surface roughness—ensuring a smooth pipe outer surface (Ra ≤1.6μm). The sleeve’s inner diameter tolerance is ±0.2mm, directly determining the pipe’s outer diameter accuracy. Calibration sleeves are available in sizes from 20mm to 630mm (compatible with common pipe diameters) and can be customized for special sizes (with a 1-week lead time).
Conveying System: Equipped with rubber-coated conveying rollers (arranged in upper and lower rows) with adjustable pressure—ensuring stable pipe conveyance without scratching the pipe surface. The roller speed is synchronized with the extrusion line (via frequency conversion drive), preventing pipe stretching or compression (which would affect dimensional accuracy). The rollers’ spacing is adjustable to accommodate different pipe diameters (20-630mm), with quick-change roller sets available for large diameter changes.
PVC Pipe Production: Used for calibrating and cooling PVC drainage pipes, water supply pipes, and electrical casing pipes. The vacuum adsorption ensures the pipe’s roundness (ovality ≤2%) and outer diameter accuracy (tolerance ≤±0.3mm), meeting GB/T 5836.1 standards. The fast cooling (reducing pipe temperature from 180℃ to 40℃ in 15 meters) improves production efficiency, allowing extrusion speeds up to 15m/min for small-diameter pipes (≤63mm).
PE/PPR Pipe Manufacturing: Critical for ensuring the roundness and dimensional stability of PE water pipes and PPR hot water pipes. The uniform cooling prevents internal stress in the pipe (reducing pipe warping during installation) and improves the pipe’s pressure resistance (e.g., PPR pipes can withstand 2.0MPa working pressure after cooling). The smooth surface (from the calibration sleeve) also reduces fluid resistance in water supply applications.
Special Pipe Processing: Suitable for shaping corrugated pipes (e.g., PVC double-wall corrugated pipes) and structured-wall pipes. For corrugated pipes, a special vacuum calibration sleeve (with corrugated inner surface) is used to form the pipe’s corrugated structure, while the cooling system ensures that the corrugations maintain their shape (no flattening). The tank’s long length (≥25m) accommodates the slower extrusion speed of special pipes.
Q: What is the water temperature control range of the cooling tank?
A: The cooling water temperature is controlled between 15-25℃ via a dedicated chiller—this range balances cooling efficiency and energy consumption. For high-speed extrusion lines (≥12m/min), the water temperature can be lowered to 12℃ to ensure sufficient cooling; for thick-walled pipes (≥20mm), the water temperature is set to 20-25℃ to prevent rapid cooling (which could cause internal cracks).
Q: Can the tank be adjusted for different pipe diameters?
A: Yes, the tank can be easily adjusted for different pipe diameters (20mm to 630mm) by: 1) replacing the calibration sleeve with one of the required inner diameter; 2) adjusting the spacing and pressure of the conveying rollers; 3) modifying the vacuum pressure and cooling water flow (to match the pipe’s heat capacity). For diameter changes within 50mm (e.g., from 50mm to 100mm), the adjustment can be completed within 30 minutes; for larger changes (e.g., from 100mm to 315mm), it takes 1-2 hours (including sleeve replacement).
| Name | Size | Downloads | Update | Thumbnail | Copy Link | Download |
|---|---|---|---|---|---|---|
| PLASTIC RECYCLING 2024-IVIMA.pdf | 10.74MB | 59 | 2024-12-30 |  | Copy Link | Download |
| PLASTIC EXTRUSION 2024- IVIMA.pdf | 12.30MB | 59 | 2024-12-30 |  | Copy Link | Download |
