Blind Flanges
Blind Flanges At API we offer carbon and stainless steel blind flanges in AWWA and ANSI/ASME standards, available in flat face and raised face designs. Shop Blind Flanges No-Flow Pipe Ends About Blind Flanges Blinds are flanges without a center bore (hole or opening) and are available in both Raised Face (RF) and Flat Face (FF) […]
Backing Flanges
Backing Ring Flanges Our Backing Ring Flanges can be manufactured to accommodate stub ends and angle face rings. We carry back-up flanges constructed of ductile iron or stainless steel. Shop Backing Ring Flanges Reinforced Pipe Joints About Backing Ring Flanges Backing flanges are used to reinforce and secure loose flange systems, especially in pipelines where stub […]
Slip-on Flanges
Slip-On Flanges We offer domestic (AIS/BABA) & imported carbon and stainless steel slip-on flanges in AWWA and ANSI/ASME standards, available in flat face and raised face designs. Shop Slip-on Flanges Fast Pipe Connection About Slip-On Flanges A slip-on flange is a type of pipe flange designed to slide over the end of a pipe. Its […]
DIN Flanges
DIN Flanges We support PN-rated steel and stainless steel slip-on flanges made to DIN EN 1092-1 specifications, available in ring and slip-on styles in PN10, PN16, and PN25. Request a Quote European Standards What is DIN? Deutsches Institut für Normung (DIN), or the German Institute for Standardization, is the official body that designates industrial and […]
ASME Flanges
ASME Flanges API International stocks imported and domestic (AIS) ASME flanges in steel and stainless steel, including slip-on and blind styles, available in both flat face and raised face designs, offered in class 150 and 300. Our machine shop allows us to manufacture custom ASME flanges to meet your project requirements. ASME Catalog Reliable Code […]
ANSI Flanges
ANSI Flanges API International stocks imported and domestic (AIS) ANSI flanges in steel and stainless steel, including slip-on and blind styles, available in both flat face and raised face designs, meeting ANSI/ASME B16.5 and B16.47 specifications for Class 150 and Class 300. Our machine shop allows us to manufacture custom ANSI flanges to meet your project […]
Theoretical Flange Weight Calculator
Theoretical Flange Weight Calculator Enter the specifications and material type for your flange to calculate its theoretical weight. The calculator works for round flanges as well as square and rectangular plate flanges, and automatically subtracts the bore and the bolt holes. Results are theoretical estimates; actual weight varies by facing, hub and machining tolerances. Reference […]
AWWA Flanges
AWWA Flanges We produce steel and stainless steel AWWA flanges for waterworks service to comply with American Water Works Association (AWWA) C207 and C228 specifications, with domestic (AIS/BABA) and import options available. AWWA Catalog Behind Reliable Waterworks What is AWWA? The American Water Works Association (AWWA) was founded in 1881 to establish and unify standards […]
Technical Resources
About Our Resources Our Technical Resources are here to provide you useful information including Spec Sheets, Product Catalog, Line Cards, Manuals, and Industry Associations. The purpose is to help you make informed product decisions when selecting from our wide variety of flanges, valves, and other pipe fittings. Line Cards, Flyers, and Brochures Product Catalog Line […]
Press Releases
Articles Our Press Release articles are here to provide you useful information about the latest news and company updates from API International, Inc. Here are our latest Press Release articles to choose from: