We offer expert pressure testing and hydrotesting services for hydraulic pipelines, lube oil pipelines, fuel pipelines, and water pipelines as part of pre-commissioning activities, installation, or the replacement of old pipelines—performed either on-site or at our dedicated yard facilities.
Professional Pipeline Pressure Testing & Hydrotesting
Purpose & Benefits
Pressure and hydrostatic testing are industry-standard methods for confirming the integrity, leak-tightness, and safe operating strength of newly installed or replaced pipelines. These tests are critical phases of pre-commissioning, ensuring every pipeline system is ready for safe, reliable service and compliant with regulatory requirements such as ASME B31 and international standards.
What Is Pressure Testing (Hydrotesting)?
Hydrostatic pressure testing involves:
- Filling the pipeline with water or suitable test medium
- Pressurizing the system to a test pressure—typically above normal operating levels (often 1.25–1.5× the design pressure) allaboutpipelines+2
- Holding the pressure for a specified duration per industry protocols (often between 8–24 hours for pipelines)
- Monitoring for pressure drops or visible leaks
- Inspecting and certifying the pipeline section if the test is successful wingoil+2
Each test demonstrates both the mechanical strength under internal pressure and the leak-tightness of joints, welds, or connectors. nigen+2
Testing Services We Provide
Hydraulic Pipelines
- Testing for system strength and leak-proof integrity under hydraulic operating conditions
- Conformance to hydraulic industry standards, typically using clean water or hydraulic oil as the test medium
Lube Oil Pipelines
- Hydrotesting of lubrication oil lines to detect leaks before commissioning machinery or process systems
Fuel Pipelines
- Hydrotesting ensures fuel pipelines (diesel, petrol, gas) can withstand expected operating pressures and are free from leaks, essential for safe operation and environmental protection
Water Pipelines
- Pressure and hydrotests for drinking water, process water, and utility pipelines—ensuring compliance with local codes (such as DIN EN 805, DVGW W 400-2) and confirming reliable distribution line operation
Pipeline Replacement Projects
- Pressure testing of newly-installed pipeline segments follows isolation of the section, complete filling and venting, pressurization, and extended leak observation, both on-site and at yard locations
Typical Pre-commissioning Process
- Cleaning & Debris Removal
Flushing and pigging to remove contaminants, construction debris, or corroded residues - Pipeline Filling & Venting
Complete filling with water (or suitable fluid), venting air, and ensuring no trapped pockets - Incremental Pressurization
Pressure raised to the defined test value using certified pumps and control equipment - Observation & Inspection
Continuous monitoring for leaks, weld failures, or pressure decay (indicative of micro-leaks or weaknesses) - Leak Detection & Analysis
Use of tracer gas, acoustic emission, or advanced sensors for fine leak detection, when required - Depressurization, Drying & Certification
Controlled release of pressure, thorough drying (using air or nitrogen purge for oil/fuel lines), and issuance of detailed test certificates and reports
Safety, Standards & Quality Control
- Compliance with ASME, API, ISO, and local codes for all test protocols
- Certified operators and calibrated equipment to ensure data accuracy and regulatory acceptance
- Rigorous quality control and detailed documentation issued with every completed test
Why Choose Us?
- Decades of specialist experience in pipeline pressure integrity testing
- Rapid mobilization—on-site and at our yard, with full support for emergency or planned shutdowns
- Advanced testing technology: pressure logging, acoustic emission, tracer gas, and more
- Comprehensive after-test cleaning, drying, and certification
- Full support for installation, commissioning, or replacement projects
Contact our technical team today to discuss your pipeline pressure testing and hydrotesting requirements for hydraulic, lube oil, fuel, or water pipelines—and ensure complete confidence in system safety and leak-free operation.