GSY273 Hydrostatic Testing Machine-Bucking Unit

Products Description

Equipment Video

Equipment Parameters

Specification	Value
Model	GSY273
Pipe Size	Ф114-273 mm (Deviation Accuracy ≤ ±1.0%), Length: 8-12.5m (Bending Curvature ≤ 2 mm per 1000 mm, Customizable for longer or shorter range)
Working Capacity	Capacity ≥ 40 pcs/h (Ф245, Pressure=70MPa, Holding Time=5s)
Max. Pressure	50MPa (7,525psi, Customizable); Axial bearing capacity: 500T
Application Scenarios	Hydrostatic pressure testing for steel pipes (casing) to inspect defects.
Operation Mode	Manual / Debugging & Maintenance
Pipe End Condition	One end with coupling, the other end plain
Pipe Material	Stainless Steel / Duplex / SuperDuplex / Inconel Grades (Soft contact system, avoid contact with carbon steel materials)
Pressure Holding Time	0~30s (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 7s, fluctuations <43.5 psi Holding time 30s, fluctuations < 145 psi
Daily Working Time	≥ 20 hours per day
Ambient Condition	Temperature: 5~50℃, 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	50 m³ for one tim
Hydraulic Oil	HLP46 antiwear hydraulic oil (1200L required for one installation)
Total Weight	100T (Customizable)

Note: The conversion for 50 MPa to psi is approximately 7,525 psi.

I. Structures and Features

1. Overview

The GSY273 Hydrostatic Testing Machine is used to perform hydrostatic pressure tests on steel pipes to detect defects. The machine seals both ends of the pipe using a radial large-gap sealing method, fills it with high-pressure water, and holds the pressure for a specified time to check for leaks. Test results are saved in a database for traceability.

The process begins with the pipe entering the feeding rack, where it is moved to the alignment station and aligned with a fixed-end stopper. After a swirling water flush, the pipe is transferred to the test station. The test head moves to seal the pipe ends, and the pre-sealing booster starts sealing. After low-pressure water injection and venting, the main booster pressurizes the pipe. Pressure is held, and the test data is automatically recorded in the database.

After pressure holding, the system checks if the pipe passes the test. Unloading valves are opened to release pressure, and the pipe is flipped out of the tester. Failed products are sent to the waste bin, while qualified products proceed to the next process, completing one test cycle.

2. Process Workflow

Loading table→casing seperator→turn casing in→align→turn casing out→rotary washing position →casing into tester→clamp the casing→clamping tong takes casing into testing heads→testing heads on trolly side moves to position→pre-seal→inject water and discharge air →close the discharge valve→close the water injection valve→pressure on casing body→keep pressure→unload→testing heads on trolly side move backward→clamping tongs take casing out of testing heads→clamping tong unclamp→turn casing to water-empty position（send signal for unqualified casing）→discharge water and clean inside→casing out to rack（unqualified casings to unqualified rack directly）→next cycle

3. Main Parts of GSY273 Single-pipe Hydro Tester