Safety Quality Teamwork

Our motto reminds us to always put safety first, to work together as a team and to consistently provide quality products and services to our customers.  We stand behind our work and we take pride in everything we do! 

HMC Instrumentation & Controls

Pneumatic Hydraulic Electronic

 Hydraulic Controls

We turnkey manufacture custom control systems that are built to your specifications and requirements. – Safety Quality Teamwork

Tel. 832-252-9280

Fax. 713-462-1453

  Safety Quality Teamwork

Texas Proud
Made in the U.S.A.

Onshore, Offshore, International and Domestic Instrument and Electrical Field Service for trouble shooting repair work and new construction. Safety Quality Teamwork

Inspectors • Instrument Fitters •  Electricians • Welders  • Pipefitters

ISO 9001:2008 CERTIFIED - Our certificate from ABS can be downloaded here. CERTIFICATE #50534

Control Panels

Our panel shop is located in Cypress just out side Houston, Texas. We have 7500 sq. dedicated to custom control panel projects. We have created a work environment that supports creativity and provides the type atmospher needed to concentrate on details and colaborate. Our shop also includes a segregated work area to be utilized by our clients personnel when programming and testing.


ATEX certified UL certified


We have the following UL Listing capabilities:

UL 508 for General Purpose Control Panels.

UL for Explosion-proof and Purged Enclosures.


UL 698 for Hazardous Location Panels with Intrinsic Safe Circuits.

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ATEX certified UL certified

Our team specializes in providing UL explosion-proof ( NEMA 7, ATEX, IEC Ex) and stainless steel UL Type 4x, NEMA 4X) panels for hazardous.ations and corrosive environments.

Our product solutions include panel with main breakers, main lug only (MLO), and fusible disconnects.  Panels can be made according to UL standards, National Electric Code (NEC), or IEC standards. HMC is also capable of building per UL 508a (Category NITX), NNNY hazardous-locations for UL Class I Division I & II. 

WE have ATEX solutions for CE Marking and 5 KV IEC Ex Type Z purge solutions.  Our team will work with your team to acheive the project goals.

We have great relationships with our vendors and we only purchase parts and material of the highest quality.


ABB, Allen-Bradley, Eaton Cutler-Hammer, GE, Sprecher & Shuh, Square D, and Siemens.   We have also provided control panel solutions using Hoffman, Rittal, Adalet, Crouse-Hinds, and Appleton, among others. 


We carry in stock a large variety of parts to pull from or we can accomidate you if have your own parts or want to purchase parts and have them delivered to us. Your parts are always kept in a designated area arranged neatly and always stored securely. Parts that are ready to be used during construction are clearly marked and stored in an area designated only for the related project.


All panels fabricated by HMC undergo a detailed, documented Panel Checkout Procedure developed specifically for each panel. To assure that your panel matches its specifications perfectly, we have a 65 point QA checklist and every control panel is hot tested before delivery. All PLC output points and hardwired circuits are hot verified. All high voltage circuits are checked for continuity and ground faults.

Panel Quality Assurance Checkouts include, but are not limited to:

    Panel power-up and fusing testing

    Wire continuity testing

    I/O simulation

    Operator Interface verification

    Terminal torque testing

    Nameplate and wire tagging verification

    Other testing as required for complete functionality

    100% testing

    Instrument set up and calibration

Device Simulation


Custom Control Panels

We are Control Panel Experts

HMC control panel experts

panel shop, custom control panels

Control Panel Services

  • PLC Programming,
  • PLC Panel repair
  • PLC Panel Testing
  • EX Panel Builds
  • Atex Panel Turnkey
  • UL Panel Turnkey
  • Maintenance & Repairs
  • Trouble Shooting
  • Control Panel Assembly
  • Consulting
  • Start up
  • Installation &
  • commissioning



Our staff consist of highly knowledgeable Project Managers, Designers, Wiremen and assemblers who work together with a quality objective. Redundant quality checks are incorporated throughout the design and manufacturing process, from design to fabrication to programming to integration to project management to commissioning - HMC makes sure that every step is of the highest quality workmanship and of the highest quality components.


Our customer service representatives are ready to assist you now. Call 832-252-9280.




– Safety Quality Teamwork

ATEX certified UL certified 

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panel shop, control panels, custom panels, control panel shop