HVAC and waste treatment plants. It offers on-site project management and supervision for construction and engineering contracts, working with both public and private sector projects. SIMCO Tunnel & Metro also operates an in-house metal fabrication service producing balustrades, handrails, railings, enclosures, fixtures, mountings, bases for pumps and other general structural steel fabrications. These services are integrated to support civil, transport and infrastructure projects that require coordinated engineering and fabrication capabilities.