Products Description
The GSY42 Four-Station Hydrostatic Testing Machine is a fully automatic high-performance steel pipe pressure testing device for metal pipe defect detection via high-pressure water testing. It accommodates small diameter pipes with outer diameters of Φ21–42mm and lengths of 2–13m, with a maximum test pressure of 30MPa (4,351psi). Equipped with a professional Siemens S7-1200 PLC control system and 19-inch industrial computer, it realizes full automation from feeding, sealing and pressurization to automatic data logging. The four-station design dramatically boosts production efficiency. It is perfectly applicable to high-volume quality inspection of API tubing, casing and small-diameter industrial steel pipe production lines, with customized technical solutions available.
Equipment Video
Key Features & Specs
High-Pressure Capacity & API Compliance
Supports up to 30MPa (4,351psi) maximum test pressure, matched with 20-ton axial thrust bearing capacity, stable and reliable for small-diameter pipe high-pressure integrity testing. Meets API standards with reliable clamping and sealing.
Four-Station Ultra-High Efficiency
Four-station design enables simultaneous testing on four stations with significantly reduced idle time, achieving testing capacity of ≥350 pieces per hour under standard conditions (Φ21mm pipe, 20MPa, 5s holding time). This makes it the ideal choice for mass production lines requiring ultra-high throughput.
Advanced Sealing System
Adopts radial large-gap sealing structure with premium polyurethane hydraulic rings, service life over 3,000 working cycles. Clamshell-style sealing heads enable fast mold replacement and low maintenance downtime.
Intelligent Control & Data Traceability
Configured with Siemens S7-1200 PLC and 19-inch industrial computer, supporting automatic, manual and debugging modes. All test pressure, time and result data are automatically stored in the database to achieve full-process traceability.
Equipment Parameters
| Specification | Value |
|---|---|
| Model | GSY42 (Four-station: 4 pipes per cycle) |
| Pipe Size | Ф21–42 mm (Deviation Accuracy ≤ ±1.0%), Length: 2-13m (Bending Curvature ≤ 2 mm per 1000 mm, Customizable for longer or shorter range) |
| Working Capacity | Capacity ≥ 350 pcs/h (Ф21, Pressure=20MPa, Holding Time=5s) |
| Max. Pressure | 30MPa (4,351psi, Customizable); Axial bearing capacity: 20T |
| Application Scenarios | Hydrostatic pressure testing for seamless steel pipes, welded pipes (longitudinal welded pipes ERW, spiral welded pipes SSAW, etc.), stainless steel tubes, oil tubings and casings (API testing), titanium tubes, alloy steel pipes, aluminum tubes, copper pipes, etc. |
| Operation Mode | Auto / Manual / Debugging & Maintenance |
| Pipe End Condition | Plain End |
| Pipe Material | Stainless Steel / Duplex / SuperDuplex / Inconel Grades (Soft contact system, avoid contact with carbon steel materials) |
| Pressure Holding Time | 0~100s (Adjustable) |
| Sealing Mode | Radial large-gap sealing; Polyurethane hydraulic ring + Bearing circular block; Long service time (Durability > 3000 times); Open seal heads: The fixture is equipped with a clamshell-style sealing head, which allows for easy and efficient replacement, improving operational efficiency |
| Testing Pressure Accuracy | Pressure Sensor Accuracy: 0.5%, Control Accuracy: ±2% (Max. Testing Pressure) |
| Pressure Fluctuation | Holding time 5s, fluctuations <100 psi Holding time 25s, fluctuations < 500 psi |
| Daily Working Time | ≥ 20 hours per day |
| Ambient Condition | Temperature: 5~40℃, Humidity: 10%~100% |
| Electric Supply | Voltage AC 380V±10%, Frequency 50HZ±1, Max. Installation Power: 160 kVA |
| Industrial Filtered Water | Suspended Solids ≤ 100mg/L, Hardness ≤ 10.6Dh, Pressure ≥ 0.3MPa |
| Clean Circulating Water | Pressure 0.20~0.50MPa |
Compressed Air | 0.4~0.6 MPa, < 6 m³/min |
| Emulsion | 120 m³ for one time |
Hydraulic Oil | HLP46 antiwear hydraulic oil (1200L required for one installation) |
| Total Weight | 40T (Customizable) |
Note: The conversion for 30 MPa to psi is approximately 4,351 psi.
I. GSY42 Four-Station Hydrostatic Testing Machine Structures and Features
1. Overview
The GSY42 Four-Station Hydrostatic Tester conducts hydrostatic pressure tests on steel pipes to identify defects. Using radial large-gap sealing at both pipe ends, the machine injects high-pressure water and maintains pressure for a set duration to inspect for leaks, with test results stored in a database for full traceability.
The automated cycle begins with pipe feeding, alignment, and swirling water flushing, followed by transfer to the test station. Test heads seal the pipe ends; after low-pressure water filling and venting, the main booster pressurizes the pipe. Pressure is held steadily while data is automatically recorded.
Once testing is complete, pressure is relieved, and the pipe is discharged. Qualified pipes move to the next process, while failed pipes are diverted to the waste bin, finishing one full test cycle.
2. Process Workflow
Feeding Pipe → Pipe Flipping → Alignment, Swirling Flush Pipe → Hydrostatic Tester Feeding → Water Injection Test Head Positioning → Fixture Clamping → Pre-Sealing → Water Injection and Exhausting→ Pipe Pressurization → Pressure Holding → Pressure Release → Pipe Discharge from Hydrostatic Tester (Signal for Failed Products) → Air Blow for Water Evacuation → Discharge to Output Rack (Failed Products Directly to Waste Bin) → Next Cycle
3. Main Parts of GSY42 Four-station Hydro Tester
(1) Loading Table (Auxiliary Machine)
(2) Air Blow-off Device
(3) Hydrostatic Tester Main Unit
1) Frame
2) Water Injection Test Head
3) Exhausting Test Head
4) Pipe Inlet/Outlet Conveyor System
5) Clamping Device
6) Test Molds
(4) Water System
1) Low-pressure water system
2) High-pressure water system
(5) Electrical-hydraulic Control System
(6) Control System (Siemens S7-1200 PLC + 19'' Upper Computer)
II. Scope of Supply
1. Mechanical Equipment
| No. | Equipment Name | Quantity (Set) |
|---|---|---|
| 1 | Hydrostatic Testing Machine Main Unit | 1 |
| 2 | Booster (Integrated) | 1 |
| 3 | Filling Tank (4 cubic meters) | 1 |
| Alignment and Water Control | 1 |
2. Pneumatic System
| No. | Equipment Name | Quantity (Set) |
|---|---|---|
| 1 | Piping Accessories | 1 |
| 2 | Control System | 1 |
3. Hydraulic System
| No. | Equipment Name | Quantity (Set) |
|---|---|---|
| 1 | Hydraulic Pump Station | 1 |
| 2 | Hydraulic Cylinder and its Control | 1 |
4. Electrical Control System
| No. | Equipment Name | Quantity (Set) |
|---|---|---|
| 1 | Power Control Cabinet | 1 |
| 2 | Switch Control Cabinet | 1 |
| 3 | On-site Operation Box | 1 |
| 4 | Main Operation Control Panel | 1 |
| 5 | Upper-level Industrial Computer | 1 |
5. Pressure Testing Molds
| No. | O.D. Size (mm) | Qty. (Set) |
|---|---|---|
| 1 | 17.1 | 4 |
| 2 | 21.3 | 4 |
| 3 | 26.7 | 4 |
| 4 | 33.4 | 4 |
| 5 | 42.2 | 4 |
III. Referenced Images of GSY42 Four-Station Hydrostatic Tester
1. GSY42 Four-Station Hydro Tester to Tianjin, China
1.1 Overview of Hydro Tester
2. GSY42/20 Four-station Hydrostatic Tester
FAQ
Q1. What pipe specifications and types can the GSY42 four-station hydrostatic testing machine test?
A1. The GSY42 four-station hydrostatic testing machine is suitable for small diameter pipes with outer diameter Φ21–42mm and length 2–13m (customizable), with diameter deviation accuracy ≤±1.0%. It is widely used for hydrostatic testing of API tubing, API casing, seamless steel pipes, ERW and SSAW welded steel pipes, stainless steel tubes, and alloy steel pipes.
Q2. What is the maximum test pressure and axial bearing capacity of the GSY42 equipment?
A2. The standard maximum test pressure is 30MPa (about 4,351psi), supported by a 20-ton axial bearing capacity to ensure stable operation under high pressure. Test pressure can be customized according to user site demands.
Q3. How efficient is the GSY42 four-station hydrostatic testing machine?
A3. Under standard test conditions with Φ21mm pipe, 20MPa pressure and 5s holding time, the efficiency is no less than 350 pieces per hour. The four-station design significantly increases throughput compared to single or dual-station units, adapting to ultra-high-volume tubing and casing production line quality inspection.
Q4. What control system does it use, and is test data traceable?
A4. It uses Siemens S7-1200 PLC and 19-inch industrial computer as the core control system, supporting automatic, manual and debugging modes. All test parameters and inspection results are automatically recorded and saved, realizing complete data traceability for each steel pipe.
Q5. What are the advantages of the four-station design and sealing system?
A5. The four-station design allows simultaneous testing on four stations, dramatically improving production efficiency for mass production lines. The machine adopts radial large-gap sealing technology with combined polyurethane sealing rings (>3,000 cycles). The clamshell sealing head design allows quick mold replacement, simple operation and greatly improved maintenance efficiency.
Boyu Petroleum Equipment owns over 30 years of professional experience in R&D and manufacturing of steel pipe hydrostatic testing machines, hydraulic bucking units, and pipe straightening machines.
If you need professional high-pressure four-station pipeline hydrostatic testing equipment and oilfield supporting solutions, feel free to contact us to get detailed technical parameters and official quotation of GSY42.
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