REQUEST A QUOTE Home About Us Maass Global Group Products Materials Quality Data Protection Disclaimer Welcome to our website Maass Flange Corporation is a fully integrated, forging and machining manufacturer of domestic and import stainless and alloy flanges with operations located in Houston, Texas and Acuna, Mexico. Maass has become the most diversified stainless and alloy flange manufacturer in the world by offering a complete line of both small and large diameter sizes, combined with a full range of pressure classes in many various grades of material. Always striving to be the best we can be, holding quality certificates in ISO 9001:2015 and PED (Pressure Equipment Directive AD WO), it is our dedication to assure a superior product and service to all of our customers. We hope you enjoy your experience with Maass Flange and look forward to your continued business. We welcome your questions that you may have, and look forward to a long professional relationship. News The Maass Global Group, a global leading manufacturer of specialty flanges, is pleased to announce that it has divested its US, Canadian and Mexican flange related operations to AFG Holdings, Inc. The shareholders of the Maass Global Group, Alexander and Patrick Maass, remain invested in the newly combined operations through minority interests and Alex Maass will lead the new platform and management of the combined operations as President. The newly formed entity will be called Ameriforge LLC. Read more MTR Portal We Produce The Maass Global Group service implies apart from the individual production of flanges, also the preprocessing and support of your global projects from the planning to the activation phase of the entire construction. Your tailor made needs, inclusive ITP's and project managing support, packaging, client inspections and logistics can be handled by us. We Stock Weldnecks, Slip-Ons, Threaded, Blind, Socketweld, Lap-Joint, Orifice, Reducing Flange and flanges according to drawing. Material Standards ASTM AND ASME Dimensional Standards ASME B16.5, B16.36, B16.47, B16.48, AWWA, DIN DIN EN ISO 9001:2015, DIN / EN 1092, CERTIFIED BY TüV, PED, GL, BV, DNV Saudi Aramco, PDO, KOC, Shell, EIL, Total and many other major approval governing bodies. Size and Pressure Class Capabilities DN 10 - DN 2200" | 2627 - 2638 | 2527 / PN 6 - PN 400 Size and Pressure Class Capabilities ASME B16.5 1/2" thru 102" | 150# | 300# | 600# | 900# | 1500# | 2500# * size range may vary by grade & pressure class Careers Currently no jobs available