• 3450 Lang Road, Houston, TX
  • 713-690-7328


Dun & Bradstreet

Gretna’s Dun No.: 054633755

Dun & Bradstreet, Inc. is an American public company headquartered in Short Hills, a community in Millburn, New Jersey, US that provides commercial data to businesses on credit history, business-to-business sales and marketing, counterparty risk exposure, supply chain management, lead scoring and social identity matching.

System Award Management

Gretna’s Cage Code : 0AXC7

The Commercial And Government Entity (CAGE) Code is a five-character ID number used extensively within the federal government, assigned by the Department of Defense’s Defense Logistics Agency (DLA). The CAGE code is used to support a variety of mechanized systems throughout the government and provides a standardized method of identifying a given legal entity at a specific location. 


AS9100  is a widely adopted and standardized quality management system for the aerospace industry. The standard takes the ISO 9001 requirements and supplements them with additional quality system requirements, which are established by the aerospace industry in order to satisfy DOD, NASA and FAA quality requirements.

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ISO 9001:2015

Gretna Machine Shop, Inc. is ISO-certified and holds high scores through successful implementation of a Total Quality Management Program. Being in accordance with the standards of ISO 9001-2015 illustrates our continuous dedication to high-end quality work and continuous improvement.

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HUBZone is a United States Small Business Administration (SBA) program for small companies that operate and employ people in Historically Underutilized Business Zones (HUBZones). The program helps small businesses in urban and rural communities gain preferential access to federal procurement opportunities. Gretna is certified as a “qualified HUBZone small business concern (SBC)”, which means that we are eligible for HUBZone opportunities.

Woman Owned Small Business

To be eligible for the WOSB program, a firm must be 51% owned and primarily managed by women. The WOSB Federal Contract Program allows set-asides for WOSBs in industries where women-owned small businesses are substantially underrepresented.

Better Business Bureau (BBB)

Gretna maintains an A+ rating with the Better Business Bureau. With a mission to create a community of trustworthy businesses, the BBB sets the standards for marketplace trust, encouraging and supporting best practices, celebrating marketplace role models, and denouncing substandard marketplace behavior.


At Gretna, all of our CNC machines are UL-certified, which means that they have undergone rigorous safety analysis. Because UL is a global independent safety science company, the UL Mark is the most widely recognized and accepted third party certification mark in North America, giving products the surest route to product acceptance by authorities, regulators and customers.

Gretna is a proud member of the following professional organizations:

National Federation of Independent Business (NFIB)

NFIB is America’s leading small business association, promoting & protecting the right of its members to own, operate and grow their businesses.

Women In Manufacturing (WIM)

WIM is a community of manufacturing professionals nationwide, collaborating in an effort to promote the success of women in manufacturing careers through the delivery of powerful, effective and proven resources to women in industry and the companies that employ them.

Houston Hispanic Chamber of Commerce (HHCC)

The Houston Hispanic Chamber of Commerce is the leading advocate for Hispanic business and civic interests in the Greater Houston area.