HNTB Corporation
HNTB Corporation is an employee-owned infrastructure firm specializing in architecture, engineering, planning, and construction management with expertise in bridges, highways, transit, and rail systems.
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1,411 companies
HR Wallingford Ltd
An independent research and consultancy organisation specialising in civil engineering hydraulics and the water environment.
HSM Steel Structures
Smulders HSM is an integrated EPCIC solution provider specializing in multi-disciplinary offshore projects including offshore wind, hydrogen, gas, and carbon capture and storage platforms and structures.
HTK Consultants, Inc.
HTK Consultants, Inc. provides worldwide petroleum engineering, oil and gas project management, well site supervision, and midstream to downstream project inspection and management services.
HYDAC USA
HYDAC USA provides hydraulic systems, components, and fluid engineering solutions for industrial and maritime applications.
Halliburton Energy Services
Halliburton provides engineering solutions and services for global energy needs, specializing in subsurface evaluation, reservoir testing, drilling, well construction, and digital subsurface solutions.
Halocarbon Products Corp.
Halocarbon Products Corp. manufactures engineered fluids and specialty chemicals used in aerospace, defense, and industrial manufacturing applications.
Hamworthy Combustion Engineering Ltd (Head Office)
Hamworthy Combustion Engineering Ltd provides combustion and emission control solutions focused on reliable performance, emission reduction, and operational efficiency.
Hamworthy Svanehøj A/S
Hamworthy Svanehøj A/S, part of Wärtsilä since 2012, provides marine and offshore fluid handling systems including ballast water management, gas systems, exhaust gas cleaning, fresh water generation, inert gas systems, oil separation, and wastewater treatment solutions.
Han-Padron Associates (Consulting Engineers)
Han-Padron Associates is a full service engineering firm dedicated to projects in the marine environment.
Hanna Cylinders
Hanna Cylinders, founded in 1901 in Chicago, designs and manufactures premium quality industrial pneumatic and hydraulic cylinders, specializing in custom engineered solutions for heavy duty applications.
Hansen Marine Engineering Inc.
Hansen Marine Engineering, Inc. is the largest Westerbeke engine, generator, and parts distributor in the northeast, specializing in marine engineering solutions and offering products from Westerbeke, Universal, Aquadrive, and Nanni Diesel.
Harding ESE, Inc.
MACTEC, Inc and its subsidiaries Harding ESE and Pacific Environmental Services, are full service environmental consulting and engineering companies drawing on the resources of a nationwide network of offices.
Harfan Technologies, Inc. (Head Office)
Infrastructure Maintenance and Management The Infrastructure Challenge: Over half of linear infrastructure is now much more than 50 years old. And over 80% has served its expected service life. The challenge is great, yet money is limited. Let us provide you with the methodology and tools to make better decisions and optimize your spending, so you can do more with less. “By integrating condition assessment and repair/replace strategies for each asset with Harfan’s unique approach, you will save over 15% for the same volume of work.”
Harland and Wolff Heavy Industries Ltd
Harland and Wolff Heavy Industries Ltd is a historic shipbuilding and heavy engineering company based in Belfast, Northern Ireland, now acquired by Navantia UK, supporting defence, maritime, and clean energy sectors.
Harold Vance Department of Pet
Harold Vance Department of Petroleum Engineering at Texas A&M University focuses on research and education in petroleum engineering and energy resources.
Harry A. Jackson P.E.
Harry A. Jackson P.E. is an independent naval architecture and marine engineering consulting firm based in Groton, Connecticut, specializing in submarine and ship design.
Hart Crowser (Corporate Headquarters and Seattle Office)
Hart Crowser provides environmental assessment, restoration, and remediation services with expertise in site development, natural resources, and geotechnical engineering.
Hawaii Marine Co.
Hawaii Marine Company provides naval architectural, marine engineering, expert witness, marine surveying, computer aided design and drafting services compliant with USCG, ABS, and ABYC standards.
Hawboldt Industries
Hawboldt Industries is an innovative, ISO 9001-certified manufacturer of marine deck equipment, winches, propellers and propeller repairs.
Hayes Pump, Inc.
Hayes Pump, Inc. is the largest and oldest industrial, commercial, and municipal pump distributor in the Northeast USA, offering a broad range of pumps, engineered pump systems, and repair services.
Hayward Tyler Engineered Products
Hayward Tyler Engineered Products is a UK-based company specializing in the design and manufacture of pumps and motors for maritime and industrial applications.
Heavy Engineering Industries & Shipbuilding Co.(KSC)
Heavy Engineering Industries & Shipbuilding Co.(KSC) (HEISCO) is a leading Kuwaiti EPC contracting company specializing in shipbuilding, ship repair, oil & gas construction, industrial maintenance, and maritime services, certified to ISO 9001:2015, ISO 45001:2018, and ISO 14001:2015.
Heerema Group
Heerema Group delivers innovative and sustainable offshore solutions including transportation, installation, removal of offshore infrastructure, fabrication of offshore energy structures, and bespoke engineering for the offshore renewable industry.