Sigma Engineering Works

What Sigma Engineering Works does

Sigma Engineering Works LLC (SEW) is an Abu Dhabi-based engineering services firm founded in 1996 and operating as the fabrication and manufacturing arm of Mazrui Energy Services, the energy division of the UAE-based Mazrui International Group. The company delivers a portfolio of six core services to the energy industry: custom fabrication (pressure vessels, skid modules, piping spools, structural steel, tanks); BOP overhaul and repair; valve repair, reverse engineering, and refurbishment (including specialist Cameron work); shop manufacture of API 6A/16A/16C components such as tubing hangers, drilling spools, and choke manifolds; on-site field repair (API Q2-compliant cold cutting, NDT/NDE, welding, heat treatment); and high-spec heavy machining from a 22,290 sqm facility with 13,824 sqm of covered workshop capacity including 12-ton and 6-ton borers and 24/7 operations.

The business runs on a quote-based B2B enterprise model with no public pricing, primary customer engagement via direct sales and dedicated account management, and go-to-market concentrated on the UAE energy sector (ADNOC and other national oil companies) through ADIPEC, LinkedIn, YouTube, and the sigma.ae website. Revenue streams are a mix of one-time fabrication/manufacturing jobs and recurring professional services (BOP/valve/field repair, including multi-year service contracts). The company is heavily certified to API (6A, 16A, 16C, Q1, Q2), ASME (U, U2, NB, R), and ISO (9001, 14001, 45001) standards, and is diversifying into nuclear (NUVIA SIGMA JV), advanced machining (MNB Precision JV), and digital metering (Axellect partnership), giving it both horizontal and vertical growth pathways inside the Gulf energy services market.

Name

Sigma Engineering Works

Legal name

Sigma Engineering Works LLC

Website

https://sigma.ae

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

51–100 employees

Short description

Sigma Engineering Works is an Abu Dhabi-based engineering services firm providing API/ASME-certified fabrication, BOP and valve repair, shop manufacturing, and field services to oil & gas, petrochemical, power, maritime, and nuclear energy clients across the Middle East.

Ownership category

akta.pro rank

Product category

Industrial Fabrication Services

NAICS

Industrial Machinery Manufacturing (33324), Mining and Oil and Gas Field Machinery Manufacturing (33313), Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513)

SIC

Special Industry Machinery (No Metalworking Machinery) (3550), Services-Testing Laboratories (8734)

akta.pro primary industry

Process Skids & Modular Process Systems (Packaged Units) (IMAHAEAH)

akta.pro secondary industry

Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL)

Keywords

• Industrial fabrication
• Oilfield equipment repair
• BOP maintenance services
• Valve refurbishment services
• API certified manufacturing

Headquarters

HQ city

Abu Dhabi

HQ country

United Arab Emirates

HQ region

Middle East

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Fabrication Services: Custom fabrication including pressure vessels, process skids, module packages, piping spools, structural steel, tanks, and brownfield offshore/onshore repair and refurbishment for energy sector clients.
2. BOP Repair and Services: Complete shop BOP overhaul and repair services for Onshore and Offshore applications, including pickup/delivery, OEM parts procurement, machining, welding and heat treatment.
3. Valves Services: Complete repair and reverse engineering of all types of valves, specialist refurbishment for Cameron valves and chokes, pressure relief valves, control valves, ball valves, and butterfly valves.
4. Field Repair Services: On-site cold cutting, NDT/NDE services, welding and heat treatment, certification and compliance services for preventive maintenance and inspection support.
5. Shop Manufacturing: Manufacturing of tubing hangers, drilling spools and adaptors, choke and kill lines, choke manifolds from customer-supplied or approved drawings.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Sigma Engineering Works is an engineering services company that engineers, fabricates, manufactures, and repairs equipment for the energy industry. Its core offerings span custom fabrication (pressure vessels, skid modules, piping spools, structural steel, tanks), BOP overhaul and repair (including Cameron BOPs), valve repair and reverse engineering, shop manufacturing of oilfield components (tubing hangers, drilling spools, choke manifolds) to API 6A/16A/16C standards, and on-site field repair (cold cutting, NDT/NDE, welding, heat treatment), all delivered from a 22,290 sqm Abu Dhabi facility.

Product overview

Sigma Engineering Works is an engineering service company offering fabrication, manufacturing, service and repair solutions to the energy industry. The company operates as a unified portfolio of six core services: Fabrication Services (custom fabrication, skid modules, piping, pressure vessels), BOP Repair and Services (overhaul, repair, certification), Valves Services (repair, reverse engineering, refurbishment), Shop Manufacture and Services (component manufacturing), Field Repair and Services (on-site cold cutting, NDT, welding), and utilizes its High Level Facility (22,290 sqm land with 13,824 sqm covered workshop area). Services are certified to API and ISO standards and cater to Oil & Gas, Nuclear, Clean Energy, Maritime, Petrochemical, Power, and Utility sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Fabrication Services Custom fabrication of pressure vessels, turnkey skid modules, piping systems, piping spools, tanks, rails systems, specialty ladders, engineered equipment skids, catwalks, platforms, structural supports, and material handling equipment for Oil & Gas, energy, maritime, petrochemical, power generation, and utility sector clients.
• BOP Repair and Services Complete shop blowout preventer (BOP) overhaul and repair services for onshore and offshore applications, including Cameron BOPs of different sizes; procurement of spares and parts; machining; welding; heat treatment; and shop machining of R/F and Ring Grooves on BOP.
• Valves Services Complete repair and reverse engineering of valves for onshore and offshore applications, including pressure relief valves, manual gate valves, check valves, control valves, ball valves, butterfly valves, and conventional mechanical line valves. Includes complete shop valve overhaul, specialist refurbishment for Cameron valves and chokes, machining, welding, and heat treatment.
• Shop Manufacture and Services Manufacturing of client components from supplied drawings or approved drawings derived from samples, certified to API 6A, 16A, 16C and ANSI standards. Products include tubing hangers, drilling spools and adaptors, choke and kill lines, and choke manifolds for Oil & Gas, energy, maritime, petrochemical, power generation, and utility sectors.
• Field Repair and Services On-site field services including API Q2 compliant cold cutting (eliminating hazardous flame cutting), NDT/NDE services, welding and heat treatment, and certification and compliance support for onshore and offshore hazardous applications.

Quantifiable outcome

• 4 years Lost Time Incident-free operation
• +2 more outcomes

Named customers1 record

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Ten partnerships are on record, tiered core and strategic.

• ADNOCcoreStrategic or Co-development Partner · 30 May 2023Strategic Collaboration Agreement signed for Steel Fabrication of EPC projects in UAE as part of ADNOC's Make It in the Emirates initiative. Represents significant milestone for local manufacturing commitment and UAE's industrial vision.
• NUVIA (VINCI Group)coreStrategic or Co-development Partner · 29 June 2021Joint venture NUVIA SIGMA established to provide nuclear plant operational support services in the Middle East. NUVIA, a subsidiary of VINCI Group (world leader in construction and concessions), partnered with Sigma Engineering Works to address UAE's needs in nuclear power development. Operations managed from Abu Dhabi representative office and El Ruways service center.
• OEM GroupcoreStrategic or Co-development Partner · 1 January 2021Exclusive partnership providing Sigma Enterprises and Sigma Engineering Works with region-wide rights to market OEM's engine and generator services including diesel engine spares, service and repair, generator service and repair, full engine supply, testing, diagnostics, rebuild and refurbishment, hydraulic pump and motor repair. Sigma facility provides fit and build services including testing, fabrication, and refurbishment.
• Alliance One Oilfield (A1O)coreStrategic or Co-development Partner · 1 January 2021Exclusive representation agreement providing Sigma Enterprises exclusive UAE-wide rights to A1O for drilling equipment supply and services. Scope includes supply, repair, refurbishment and recertification of rotating, drilling, and hoisting equipment including BOP hoisting and winches. Sigma Engineering Works provides fit and build facility for overhaul, machining, inspection, NDT, Blasting & painting, testing, and refurbishment.
• MSA SafetystrategicStrategic or Co-development Partner · 1 January 2021Sigma Enterprises represents MSA Fall Protection Systems in UAE while Sigma Engineering Works carries out installation and maintenance of MSA Latchways Fall Protection products on contract basis. Partnership broadens service offering in technical safety sector for Working at Heights solutions in Oil and Gas industry.
• MNB PrecisioncoreStrategic or Co-development Partner · 1 January 2021Joint venture between MNB Precision (UK-based manufacturer for high complexity, high-value components serving oil & gas, nuclear, power generation, rail, automotive, aerospace) and Sigma Engineering Works for advanced Machining, API Services and Manufacturing solutions in UAE market. Operations commenced November 2021.
• Woodlands Energy Services (Woodserv JV)coreStrategic or Co-development PartnerJoint venture between Woodserv and Sigma Engineering Works to provide Gas Compression technologies for Oil & Gas and Power & Energy Industries in the Middle East.
• AxellectstrategicTechnology or IntegrationPartnership to drive digital transformation in UAE energy sector. Sigma Engineering Works completed project upgrading skid-mounted Crude Oil Fiscal Metering System following Shell DEP and MESC specifications with 25,000+ inch diameter piping.
• Versalis/Eni JVstrategicStrategic or Co-development PartnerJoint venture consortium between Versalis (Eni's chemicals company), Petrochem (Mazrui Energy Services subsidiary), and Mazrui Energy Services to offer oilfield chemicals in the Middle East.
• ExebenusstrategicTechnology or IntegrationPartnership for digital transformation in drilling and completions. Sigma Enterprises partnered with Exebenus to deliver digital solutions including Exebenus Pulse and Exebenus Current ML software for operational consistency and real-time alignment in UAE energy sector.

Scale indicators7 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Al Jaber Energy Services: Al Jaber Energy Services is an Abu Dhabi-based full-service energy contractor providing fabrication, construction, and maintenance for oil & gas, petrochemical and power—directly overlapping Sigma's process skid, pressure vessel, and field service work in the UAE.
• National Petroleum Construction Company (NPCC): NPCC is a UAE-based EPC contractor for offshore and onshore oil & gas that performs fabrication, piping, pressure vessels, and module assembly—the same core activities as Sigma Engineering Works, and shares Sigma's primary ADNOC/UAE customer base.
• Lamprell: Lamprell is a UAE-headquartered engineering and fabrication contractor serving offshore and onshore oil & gas with newbuild, refurbishment and field services—directly comparable to Sigma Engineering Works' fabrication, BOP/valve services and energy-sector focus.

Broad incumbents

• Petrofac: Petrofac is an international energy services provider delivering EPC, maintenance and fabrication for oil & gas, with strong Middle East presence—directly comparable to Sigma's fabrication and field service offerings in the same geography.
• Worley: Worley is a global energy engineering and project services firm delivering fabrication, modular construction, and asset services to oil & gas and energy customers—overlapping Sigma's fabrication and energy services portfolio at broader scale and global reach.
• McDermott International: McDermott is a global EPC contractor for offshore and subsea oil & gas including fabrication of process modules, BOPs, and pressure vessels—sharing Sigma's heavy fabrication and energy-sector customer base at much larger scale.
• Cameron (a Schlumberger business): Cameron (now part of SLB) is a global OEM of BOPs, valves, wellheads and choke manifolds—the same equipment Sigma Engineering Works services, repairs and reverse-engineers—making it the dominant incumbent whose installed base drives Sigma's service workflow.
• Wood Group: Wood is a global engineering and consulting company supporting energy, process and industrial projects with fabrication, asset services and field maintenance—comparable to Sigma's energy industry services but at far larger scale and international footprint.

Others

• Bureau Veritas: Bureau Veritas is a global Testing, Inspection, Certification and Commissioning (TIC) services provider serving oil & gas, power and industrial clients—relevant to Sigma's NDT/NDE inspection, certification and QHSE work as an enabling/adjacent peer rather than a direct competitor.

Regional players

• Arabian Drilling Equipment & Services Company (ADES): ADES is a MENA-based oil & gas services company providing drilling and equipment services, including BOP and drilling equipment maintenance for operators like ADNOC—comparable to Sigma's BOP repair, valve services and drilling equipment overhaul.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCgn7gncvPtmXOY67hA7kTdg
• LinkedInlinkedin.com/company/sigma-engineering-works

Compliance14 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sigma Engineering Works