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DL Flange

DL Flange dates to the mid-1970’s with the establishment of the Global Flange and Manufacturing Company in Houston, Texas, USA.

DL Flange was acquired by the Allied Group in 2021.

DL Flange was first formed as Global Flange and Manufacturing Co. in the mid-1970’s. There have been several name changes associated with corresponding ownership changes since. In April 2021, Allied Group of Companies acquired the assets, and renamed the company DL Flange Co, LLC.

DL Flange is focused on its core competencies: Large Diameter, High Pressure, and High Yield flanges. Its corporate office is in Houston, Texas, USA, with both sales and manufacturing facilities in Houston, Texas, as well.

DL Flange specializes in flanges used in critical applications where a high degree of metallurgical quality assurance is required. The company also has facilities to manufacture components and specialty items to customer design and specifications. Flanges are generally manufactured for use in gas pipelines, power plants, oil refineries, and the petrochemical industry.


  • Forged Flanges ½” to 60” 
  • Welding Necks, Blinds, Lap Joint, Reducing, Orifice
  • 150# through 2500#
  • B16.5, B16.47 Series A&B, MSS SP-44, CSA