About Us

Company Profile

Ajab Singh & CO.-ASCO INFRA is one of the leading providers of complete engineering solutions delivering world class quality projects that provides Integrated Design, Engineering and Construction disciplines of Civil Construction, Infrastructure, roads, high rise budling, Water & Sewage & common effluent Treatment Plants, cross drainage work, Diaphragm wall (D-wall), sheet piling with Vibro-hammers, sewerage & water supply network. Big diameters pipe laying by Micro-tunnelling & HDD technology, Electrical and Plumbing (MEP), Renovation, Operation and Maintenance works through their experienced staffs’ innovations and passions.

Ajab Singh & Company consists of three main companies:

1. Ajab Singh & Company- (ASCO INFRA) Civil, Roads, Buildings,Public health Engineering, Cross Drainage, Infrastructure Developments, sanitation & MEP Works

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2. ADH Bricks (ADH) – largest producer od Modular Sewer bricks With Automated machine Capacity of 12 million bricks annually, 4 million FPS burnt clay bricks, 75 designation bricks

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3. Jaisal Infra Projects & Engineering Consultant- JIP

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  • Engineering Consultant
  • Sewerage Treatment Plant (STP)
  • Water Treatment Plant (WTP)
  • Waste Water Treatment Plant (WWTP)
  • Common Effluent Treatment Plant (CETP)
  • Booster pumping station.
  • Water, sewerage & rising main network system.
  • Block estimates & detail estimates of civil work, STP, WTP, WWTP, CETP plants with hydraulics data.
  • Estimation & consultancy for operation and maintenance for various treatment plants.
  • Soil/GeoTech investigation.
  • Surveying and design work consultancy.
  • Vetting of design from renowned universities of India
  • Project Management.
  • Facilitation of Joint Venture & Consortium.
  • Preparation of feasible & DPR of construction projects.
  • Hydraulics diagram of any piping network with Sewer and Water Gem tools.
  • Project planning & zero costing.
  • Topographical & aerial survey with Dron 360 degree camera.
  • Specialization of execution of Microtunneling work for piping work.
  • Horizontal Directional Drilling (HDD) pipe laying.
  • Diaphragm wall (D-Wall) construction.
  • CCTV, GPRS, and SUNAR Survey.

Numerous prestigious projects have been executed with Government projects and consultants in joint venture/consortium basis. Outputs have included important developments in the Commercial, Governmental, Industrial, Sewage Treatment Plants and Infrastructure works. Ajab Singh & CO.-ASCO INFRA is now a by-word for excellence in contracting and engineering sector.

Ajab Singh & Co. actively maintains its depth and range of expertise through continuous investment in staff development, leading to long-term employee retention at senior levels, and attraction of the best new talents in traditional and emerging specialisms, assuring its superior performance into the future. Its competitiveness results from its highly competent technical, managerial and financial staff body combined with its extensive plant and machinery stock.


The company is led by an experienced management team, with members and departments working together in sync linking their strength and leveraging their experience to bring every client the best in technical service and project management. For each project, a team of highly skilled and experienced professionals are assigned and equipped to meet specific challenges encountered at each project site. A dedicated project manager is designated to supervise the team’s work on a day-to-day basis as well as to act as the direct point of contact for the client. Our senior management is committed to personal involvement in all major projects and actively liaises with project managers. Through experience on site, the project team’s expert management, coordination, planning, purchasing and quality control, these arrangements ensure a transparent, accountable project process and an excellent client relationship meeting his requirement of time, cost and quality.


Ajab Singh & CO.-ASCO INFRA is the main contractor of two major government departments- Delhi Development Authority (DDA) & Delhi Water Board (DJB). Our impeccable reputation, vast experience, distinction in project management and excellent client relationships uniquely enable Ajab Singh & Co. to meet and execute the most challenging projects in the highly competitive contracting sector in all over India.