Piping

Services

In refinery operations, piping systems are engineered networks of pipes, fittings, valves, and supports that transport fluids such as crude oil, steam, chemicals, and gases between processing units, storage tanks, and utility systems. These systems are designed to operate under varying pressures, temperatures, and corrosive conditions, and are governed by strict codes such as ASME B31.3 and API standards.

Description

Piping systems are the circulatory backbone of any refinery, enabling the safe and efficient movement of process fluids across complex operational zones. These systems include process piping, utility piping, and instrument lines, fabricated from carbon steel, stainless steel, and exotic alloys depending on the service conditions. Over time, piping networks are subject to wear, corrosion, vibration, and thermal stress, requiring regular inspection, maintenance, and modification.

Inspection & Testing

Visual inspection of pipelines, supports, and joints
Non-destructive testing (NDT): ultrasonic thickness, radiography, magnetic particle, and dye penetrant
Hydrostatic and pneumatic pressure testing
Leak detection and integrity assessment

Cleaning & Flushing

Chemical flushing and passivation
High-pressure water jetting
Air blowing and debris removal

Maintenance & Repair

Welding repairs on pipe joints, elbows, tees, and flanges
Gasket replacement and flange re-torquing
Pipe support and hanger adjustments
Corrosion protection and recoating
Hot tapping and line stopping

At SnC Infratech, we offer a complete suite of piping services that begin with detailed inspection using visual methods and non-destructive testing techniques such as ultrasonic thickness measurement, radiography, and dye penetrant testing to assess weld integrity, wall thinning, and leak points. Our maintenance services include welding repairs, flange re-torquing, gasket replacement, and pipe support adjustments.

Fabrication & Installation

On-site and shop fabrication of carbon steel, stainless steel, and alloy piping
Installation of process, utility, and instrument piping
Spool fabrication and erection
Alignment and fit-up of piping systems
Pre-fabricated skid assembly and integration

Our fabrication and installation capabilities cover spool fabrication, on-site erection, and alignment of process and utility piping systems. We ensure precise fit-up, secure anchoring, and full traceability of materials and welds. For modification and upgrade projects, we reroute pipelines, install new valves and instrumentation, and upgrade materials to meet revised process demands or corrosion resistance requirements.

Cleaning and flushing services such as chemical passivation, hydro jetting, and air blowing are provided to ensure system cleanliness before commissioning.
All work is executed under strict safety protocols and documented in compliance with ASME, API, and client-specific standards. With a focus on precision, safety, and turnaround efficiency, SnC Infratech ensures that refinery piping systems remain reliable, compliant, and optimized for continuous operation.

Modification & Upgrade

Rerouting and expansion of existing pipelines
Tie-ins for new equipment or process changes
Upgrading pipe materials for corrosion or temperature resistance
Installation of valves, strainers, and instrumentation

Documentation & Compliance

Isometric drawings and spool maps
Inspection and test reports
Welding logs and material traceability
Compliance with ASME B31.3, API, and IS standards
Safety audits and risk assessments