Pipeline Engineering Division
Our Pipeline Engineering Division provides full-spectrum pipeline solutions across Pakistan, delivering engineering, construction, testing, commissioning, O&M, and integrity services for Oil & Gas, Water Supply, Industrial Pipelines, and Utility Networks.
Our certified teams and nationwide presence enable us to execute complex pipeline projects in urban, rural, and hard-to-reach environments. GMDSC’s technical strength, field expertise, and strict QA/QC standards ensure safe, compliant, and durable pipeline systems.
GMDSC has successfully completed multiple large-scale projects involving MS (Mild Steel) and Polyethylene (HDPE/MDPE) pipelines of various diameters, delivering high-quality infrastructure for public and private sector clients.
Services We Provide
Pipeline Engineering & Design
Detailed route survey & feasibility
Hydraulic modeling & sizing calculations
Stress analysis & thickness calculations
P&IDs, isometrics, and shop drawings
Structural & civil design for supports
Valve chambers & crossing structures
Material specifications & BOQs
CP system design & corrosion control plans
Pipeline Construction & Installation
Pipeline trenching, bedding, and backfilling
Laying of MS, HDPE/MDPE, GI, DI, and SS pipelines
Welding for MS pipelines
Butt, Socket & Electro fusion jointing for polyethylene pipelines
Hot tapping & line stopping
Valve installation & chamber works
Road/Rail/Canal crossings using HDD & boring methods
Anchor blocks, thrust blocks & support installations
Testing, Flushing & Commissioning
Hydrostatic pressure testing
Pneumatic testing for gas lines
Pigging, cleaning, and purging
Chlorination & disinfection (water lines)
NDT/DT inspections (UT, X-Ray, MPI, DP)
Leak detection & rectification
System charging & commissioning
Final documentation and handover
Operation & Maintenance (O&M)
Routine patrolling & inspection
Valve servicing & calibration
CP monitoring & repair
Leak repairs & emergency response
Pressure and flow monitoring
Instrumentation maintenance
Rehabilitation & pipeline replacement works
Pipeline Integrity Management
Risk-based integrity assessments
Pipe thickness measurement
Corrosion inspection & control
Internal cleaning / pigging services
Coating repair & 3LPE application
Fitness-for-service evaluations
Rehabilitation of aging networks
Where We Work
We deliver pipeline engineering services across a wide range of environments, ensuring safe and efficient fluid transportation in diverse sectors. Our work spans urban and rural areas, supporting water supply networks, sewage and drainage systems, oil and gas transport lines, and industrial process pipelines. We operate in challenging terrains, including remote locations, industrial zones, municipal infrastructure sites, and large construction projects. Whether working on underground utilities, cross-country pipelines, or facility-based networks, our team ensures high-quality engineering, compliance with standards, and reliable system performance. Our extensive experience allows us to serve government entities, private industries, and large-scale infrastructure projects with confidence and precision.
- Oil and gas transport lines
- Industrial process pipelines
- Water supply networks
Why Choose Us
✔ Proven experience with MS & Polyethylene pipelines
✔ Complete scope delivery from laying to commissioning
✔ Skilled welding & fusion technicians
✔ Strong CP, coating & rehabilitation expertise
✔ Ability to execute projects across all terrains
✔ HSE & QA/QC compliance at every stage
✔ Nationwide workforce availability
✔ Integration with GMDSC Civil, MEP & Project Management Divisions
Engineering • Construction • Integrity • Operations • Maintenance