To deliver constant high level quality performance in accordance to our customers requirements. Leadership and commitment: Holloway Houston’s quality management program has been certified to the ISO 9001, API Specification Q1, ISO/TS 29001 Standards since October 31, 2005 and has recently been re-certified to the new ISO 9001 quality management system.

Holloway Houston, Inc. is the first API Specification Q1 and Quality Plus sling shop in the United States.

Holloway Houston, Inc. also has the DNV 2.7-1 and DNV 2.7-3 type approval certification from DNV. For more information, download the DNV 2.7-1 and DNV 2.7-3 certificate below.


ISO 9001:2015

DNV 2.7-1 and DNV 2.7-3 Type Approval Certification