About Us
To be the preferred Singapore engineering services company for infrastructure works.
We bring value to our customers and partners through our delivery of quality solutions, innovative construction methods, technical support and business excellence.
We enhance customers' experience by continually upgrading our operational management system, engineering capabilities and technological leadership.
Core Values
Professionalism, Integrity, Adaptability, Teamwork, Creativity and Commitment

Our Achievements
The management and staff constantly strive to meet customers' satisfaction through continual improvements. Through their dedication, WEC has achieved the ISO 9001:2015, ISO 14001:2015, OHSAS 18001:2007, Green & Gracious Builders Scheme and BizSafe Star Certifications. The other award attained is Singapore Quality Class and we are also Member of Association of Process Industry, Singapore Business Federation, Singapore Contractors Association Ltd, Gas Association of Singapore, Singapore Chinese Chamber of Commerce & Industry, Singapore Welding Society and Singapore National Employers Federation.

WEC Engineers & Constructors Pte Ltd (WEC), formerly known as Wah-Chang Engineering Corporation, was incorporated as a civil and infrastructure construction company in 1972 in Singapore.

We are principally a specialist provider of EPCC (Engineering, Procurement, Construction and Commissioning) services for infrastructure projects for the transmission and storage of commodities, such as oil, gas, water. Our services encompass the full spectrum of engineering works from engineering design, sourcing and procurement, construction, fabrication, installation, testing and commissioning. We also possess the expertise to phase and integrate new systems with existing facilities such that existing operations are not disrupted whilst works are being carried out. In addition, we provide maintenance services to our customers for their existing infrastructure facilities.

From time to time, we are also involved in the engineering works for specialized projects such as offshore facilities for oil and gas production and petrochemical plants. These projects require high engineering expertise where our engineering knowledge and construction experience are applied. Thus far, our involvement in such projects has been in relation to specific engineering steps such as engineering design, installation, testing and commissioning.

Since 1997, we have secured projects in Singapore, Hong Kong, Indonesia, Vietnam and PRC. Our customers include government bodies, public utilities companies, airport service providers, and international engineering and construction contractors.

WEC’s operation centres are currently established in the South East Asian region, China and India, where established links of suppliers, sub-contractors and business partners can assure quality and reliability in the delivery of products and services. With this strong base, WEC is moving into the Greater Asia Region, Middle East and beyond.

Through dedicated commitment and continuous improvement, WEC has achieved the ISO 9001:2008, ISO 14001:2004 and OHSAS 18001:2007 certifications.

Core Business
We provide engineering design, project management, procurement, construction and commissioning supervision for the following projects:
Aviation Fuel System-Storage, Pumping and Filtering System, Hydrant System
Transmission Pipelines for Water, Oil and Gas including SCADA, Monitoring and Remote Control System, Impressed Current Anti-Corrosion System
Plant Engineering and specialised projects
Representative for BIAZZI Technology  

WEC possess extensive experience and skills in the design and construction of:
Long Distance Transmission Pipeline complete with Leak Detection, SCADA and CP Systems.
Specialized Plant Piping Systems complete with process storage tanks including related Electrical and Instrumentation Systems.
Our projects range from those for Chemical Plants, Oil Refineries, Utilities Terminals to Power Stations etc both in Singapore and Overseas.
WEC’s ability extends to applications of materials like High Strength Carbon Steel, Stainless Steel, Vitrified Clay Pipes, Ductile Iron Pipes, Aluminium Pipes and Fiberglass Reinforced (FRP) piping.

The Key Strengths of the Company
Sterling reputation of high quality and reliability, demonstrated by a proven track record of repeated awards of projects from the clients, such as Power Gas of Singapore and CAFHI (Changi Airport Fuel Hydrant Installation Company Pte Ltd). We successfully completed 70% of the Compressed Natural Gas pipelines awarded by Power Gas and 85% of the fuel hydrant system in Changi International Airport.
Strong presence in Asia in EPCC contracting works in Aviation Fuel System. Although we are based in Singapore, our track records of this type of projects cover Hong Kong, Malaysia, Brunei, Myanmar, Vietnam and Singapore.
We have a strong pool of construction workers and a team of capable and experienced site supervisors.
Long standing experience working for both multi-national and local conglomerates in the oil and gas industry. The MNC’s include Bechtel, Foster Wheeler, Stone and Webster Asia Inc, Worley Parsons, Parson Brinkerhoff, Kajima etc. The local companies include Power Gas, CAFHI (Joint-Venture of all the International Oil Companies operating in Singapore’s Changi International Airport), PUB (Public Utilities Board, Singapore) etc.
A strong culture of innovation in the company that brings about sterling financial results. We were awarded the E50 Enterprise in 2005, which was organized by Accenture and The Business Times supported by EDB and IE Singapore.
In addition to a Board of Directors, we have in place an executive committee, consisting of senior management members to decide on the important operating matters in the company. In doing so, we have a solid succession plan for the company management.

Build Grow Create
1) Transmission Pipelines (incl. Metering Stations) 1) Aviation Works and Associated Facilities
    - Fuel Hydrant System
    - Tank Farm
    - Apron Works incl. Runway Lights
1) Plant Engineering
    - Modules
    - Pipe Racks
    - Pipe Coating
    - Heat Exchangers
2) Tank Farms and Associated Facilities   2) Pipeline Rehabilitation