Suzhou SPT Mill Co., Ltd
Suzhou SPT Mill Co., Ltd SPT produce and supply all the steel pipe and steel sheet forming and finishing line. Here is your one-stop-solution partner for the steel pipe and steel sheet producing. Also
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1,Engineering condition
| S/N | Items | Parameters |
| 1 | Pipe size | 60.3-168.3mm |
| 2 | Wall thickness | |
| 3 | Pipe length | 6.0-12.8m |
| 4 | Length tolerance | ±5mm |
| 5 | Roundness tolerance | ±1%OD |
| 6 | Straightness tolerance | Body ≤ 2mm/m; Pipe end ≤ 3.00 mm (end length: 1.0 m); total length≤ 20 mm |
| 7 | Pipe end condition | chamfered and plain ends both,no burrs |
| 8 | Test pressure | 5-22MPa ( Max 211kg/cm2) |
| 9 | Pressure holding time | 5～10 seconds, adjustable |
| 10 | Industrial power | local power |
| 11 | Compressed air | 0.4 – 0.6 MPa, 1m³/min (buyer provide) |
| 12 | Cooling water for hydraulic system | Pressure 0.2-0.4MPa, temperature 3-35℃,200L/min PH 7.5-8.0(buyer provide) |
2, Technical parameters of the hydro-tester
| S/N | Items | SMAPTT22/60.3-168 hydro-tester |
| 1 | Test pressure | 5-22MPa ( Max 211kg/cm2) |
| 2 | Hold time | 5～10 seconds, adjustable |
| 3 | Test Pressure Accuracy | Within 0-0.5MPa |
| 4 | Sealing mode | big clearance radial sealing |
| 5 | Test dead length | ≤80mm one end |
| 6 | Test media | Water emulsion |
| 7 | Applicable pipe length | 6.0-12.8m |
| 8 | Stroke of purge head | 7m |
| 9 | Stroke of fill head | 0.5m |
| 10 | Product tooling changeover time | ≦90 min |
| 11 | Operation mode | manual, semi-automatic and automatic |
| 12 | Product standard | ASTM,API 5CT/5L |
| 13 | Power required | 100kW |
| 14 | Pressure holding method | Static mode,dynamic mode |
ANNEX1:test pressure and speed
| Size | Hydro test pressure | Holding time | length | Test speed (s/per piece)
|
| 60.3mm | 50bar-350bar | 5 | 10.0m±10mm | 45 |
| 73mm | 50bar-350bar | 5 | 10.0m±10mm | 45 |
| 88.9mm | 50bar-350bar | 5 | 10.0m±10mm | 45 |
| 114.3mm | 50bar-350bar | 5 | 10.0m±10mm | 45 |
| 127mm | 50bar-350bar | 5 | 10.0m±10mm | 50 |
| 140mm | 50bar-350bar | 5 | 10.0m±10mm | 50 |
| 168mm | 50bar-350bar | 5 | 10.0m±10mm | 50 |
3,Technological process
Fetching pipe—aligning pipe—repeat for two pipes—flushing three pipes—pressure testing two pipes—holding time—pressure releasing—moving three tested pipes out the machine and moving three flushed pipes into the machine at the same time—draining water in U pipe collecting device naturally—one circle finished.