OCTG Hydrostatic Testing Machine

Customized Hydrostatic Testing Equipment for Oilfield Casing and Tubing

Marley Machinery designs and manufactures OCTG hydrostatic testing machines for steel pipe manufacturers producing oil country tubular goods (OCTG), including oil well casing and tubing. Each machine is engineered around the customer's pipe specifications, required hydrostatic test conditions and production-line requirements.

Unlike a standard machine with a fixed operating range, a customized OCTG hydrostatic testing machine is configured according to the actual product range and inspection process. Pipe dimensions, wall thickness, test pressure, end condition, handling method and required production output are evaluated before the machine design is finalized.

Hydrostatic Testing for OCTG Production

Hydrostatic testing is used to verify the pressure integrity of casing and tubing in accordance with the applicable product specification and approved testing procedure. During the test, the pipe is filled with water, air is removed as required by the process, and internal pressure is raised to the specified level and maintained for the required holding period.

For OCTG manufacturers, repeatable testing depends on more than pressure generation. The sealing arrangement, pipe positioning, pressure-control system and test sequence must work together to achieve reliable results across the intended product range.

Working Process

The operating sequence is configured according to the machine design and customer requirements. A typical process includes:

1. Pipe loading and positioning: The casing or tubing is transferred to the test station and aligned with the sealing heads.

2. End sealing: The machine establishes the required seal according to the pipe-end condition and test configuration.

3. Water filling and air removal: Water enters the pipe while displaced air is released through the designated venting arrangement.

4. Pressure build-up: The pressure system raises the internal pressure to the specified test level under controlled conditions.

5. Pressure holding and inspection: Pressure is maintained for the required duration while the test condition is monitored.

6. Pressure release and unloading: Pressure is safely released, water is discharged as required, and the tested pipe moves to the next production stage.

The exact sequence, handling arrangement and degree of automation depend on the customer's production process.

Customized Machine Configuration

Marley Machinery evaluates the following factors when developing an OCTG hydrostatic testing solution.

Pipe specifications: The diameter range, wall thickness, pipe length and product mix determine the required sealing range, support arrangement and handling design.

Test pressure and holding requirements: The applicable standard, purchase specification and approved inspection procedure define the required test conditions. These requirements guide the selection of the pressure-generation system, valves, sensors and control functions.

End-sealing design: The sealing method must suit the pipe-end geometry and withstand the loads generated during testing. The sealing heads, restraints and supporting structure must be assessed as a complete system.

Production-line integration: Loading, positioning, unloading and size changeovers are planned around the existing line layout and target output. Automation can be configured according to the customer's operating requirements.

Control and data management: PLC control, pressure monitoring, test-cycle records and reporting functions can be incorporated where required. The final arrangement depends on the customer's quality-control and traceability needs.

Applications

This customized OCTG hydrostatic testing equipment is intended for manufacturers producing:

• Oil well casing

• Oilfield tubing

• Other steel tubular products requiring hydrostatic pressure testing under specified inspection procedures

The appropriate machine configuration depends on the products being manufactured and the applicable testing requirements. A single pressure rating or sealing arrangement should not be assumed suitable for every casing and tubing application.

Why Choose Marley Machinery?

Marley Machinery specializes in customized steel pipe testing equipment. We assess the customer's production requirements before determining the machine configuration, rather than applying one fixed design to every project.

This approach allows the proposed solution to account for pipe specifications, test conditions, sealing requirements, production flow and automation needs. The objective is to provide equipment suited to the customer's actual manufacturing process.

Request a Customized OCTG Hydrostatic Testing Solution

To evaluate your application, please provide the following information where available:

• Casing or tubing dimensions, including diameter, wall thickness and length

• Applicable product specification and required test pressure

• Pipe-end condition and sealing requirements

• Target production output and expected size changes

• Existing production-line layout and automation requirements

• Test data recording or reporting requirements

Based on this information, Marley Machinery can review the application and discuss a suitable machine configuration for your OCTG production line.

Contact Marley Machinery to discuss your casing and tubing hydrostatic testing requirements.