Engineering Excellence in
Heavy Fabrication,
Erection & Commissioning
Over two decades of proven capacity delivering multi-crore infrastructure, mechanical maintenance, and process piping solutions across India's largest energy corridors. Trusted by GAIL, IOCL, NTPC, L&T, and Adani Power.
Rooted in Refinery Precision Since 2003
A.S. Contractor & Supplier launched its journey in August 2003 at the prestigious Mathura Refinery, executing high-spec structural and piping contracts. Over the years, we have scaled into a highly professional, system-driven organization centered in Dibiyapur, Uttar Pradesh.
Today, we specialize in deploying elite technical teams, advanced machinery fleets, and uncompromising safety protocols to support heavy industries, power generators, and petrochemical complexes nationwide. Our roster of clients includes PSUs, EPC majors, and Tier-1 sub-contractors who depend on us for critical path execution.
Read Our Full History →Core Competencies & Capabilities
End-to-end mechanical, structural, and electrical solutions for India's largest industrial facilities.
Industrial Structural Steel Fabrication & Erection
Complete engineering, fabrication, and erection of structural frameworks, utility blocks, and offsite area layouts for mega-scale refineries and power plants.
Explore →Process Piping & Cross-Country Pipeline Systems
High-pressure underground and over-ground piping fabrication, seamless refinery integrations, and comprehensive hydro-testing workflows.
Explore →Heavy Equipment Erection & System Commissioning
Precision installation, testing, and operational commissioning of large-scale mechanical assets including Ash Handling Systems and EOT Cranes.
Explore →Electrical & Instrumentation
Panel integration, cable laying, precision installation, and technical site commissioning for refineries, TPPs, and petrochemical plants.
Explore →Testing, Inspection & Surface Preparation
Hydro testing, holiday testing, copper blasting, and NDT-compliant inspection with certified equipment and trained technicians.
Explore →Skilled Manpower Supply
Trained fitters, welders, electricians, and instrumentation technicians for mechanical maintenance and project execution across sites.
Explore →Engineering Strength You Can Count On
20+ Years Field Expertise
Operational since 2003 at Mathura Refinery. Site supervisors average 15+ years of hands-on structural and piping discipline experience.
200+ Unit Equipment Fleet
Company-owned cranes, welding sets, DG sets, ovens, and testing machines — zero third-party hiring delays on any project.
Safety-First Culture
200 industrial safety belts, mandatory PPE, toolbox talks, and strict HSSE adherence on every active site we operate.
Tier-1 Track Record
Trusted sub-contractor for L&T ECC, VRC, EIL, Gannon Dunkerley, Tecpro, Sunil Hitech, and NAFTOGAZ on ₹33 Lac to ₹9+ Crore contracts.
Multi-Discipline Execution
Structural, piping, E&I, and commissioning under one contract — no discipline coordination gaps, faster timelines.
Pan-India Deployment
Active across U.P., M.P., Punjab, Rajasthan, Haryana & Jharkhand with proven logistics and rapid manpower mobilisation.
Active Industrial Infrastructure Deployments
Our highest-value running and recently completed contracts across India's critical industrial sectors.
Panipat Refinery Expansion Project (P25) – Unit Part-B, SRU
MUNPL / NTPC Ash Handling System Commissioning, Meja, Allahabad (U.P.)
2×800 MW Godda Ultra Super Critical Thermal Power Project, Jharkhand
Have an Upcoming Tender or Project Requirement?
Reach out to our management directly — typical response within 24 hours.