Our machine shop enables API International to manufacture custom flanges and other products that meet a wide variety of specifications that utilize AIS, import, and exotic materials. We also support fast turn modifications to our stock items in order to meet customer needs. Whether you have a CAD drawing or sample that needs to be reverse engineered, we can work with you on prototyping, production quantity manufacturing and even warehousing product.
Milling, Turning, Facing, Boring, Drilling, Tapping, Counter Sinking, Laser Cutting, Water Jet, Plasma Cutting
Short lead times that allow you to get products to customers when they need them.
QC personnel work with modern technology to verify that all of our products meet your project requirements and abide by current regulations.
Our machine shop’s vast knowledge of tooling and fixturing can help reduce your production cost, especially on your high volume products.
At API International, our commitment to engineered precision, collaborative problem-solving, and rigorous quality assurance helps reduce your total cost of ownership. We streamline manufacturing workflows, eliminate errors, minimize design revisions, and ensure product dependability, delivering integrated solutions that save you time, money, and operational stress.
Have questions about our capabilities?
Give us a call.
Milling
Turning
Materials
*Tooling can be added quickly in order to work with almost any material
Tolerances
| Part Size (max) | Tolerance (inches) |
|---|---|
| 21″ | ± 0.001 |
| 42″ | ± 0.010 |
| 60″ | ± 0.031 |
| 118″ | ± 0.063 |
sURFACE fINISHINGS (fLANGES ONLY)
Coatings (Metal Finishing)
Manufacturing Methods
Here are some of the machines that allow us to manufacture custom flanges and other fittings. They can make modifications to standard parts, like overboring, counterboring, different bolt holes and surface finishes.
A weld neck flange provides a strong, reliable piping connection, but only when designed to the correct material specification and dimensional standard. Choosing the wrong grade or class means the flange will either fail in service or fail to bolt
NSF/ANSI/CAN 60 and 61 were developed to create consistent standards for the materials, chemicals, and components used in drinking water systems. The history of NSF-60 and 61 reflects decades of work by regulators, standards organizations, utilities, and public health experts.
A weld neck flange starts as a solid steel billet and ends as a precisely machined component with a tapered hub and beveled weld end. The manufacturing process of weld neck flanges includes heating, forging, and machining steps. Those steps
The new product line adds NSF/ANSI/CAN 61 and NSF/ANSI/CAN 372 certified stainless steel flanges to API International’s waterworks offering TUALATIN, Oregon, September 1st, 2026 – API International, a manufacturer and engineered solutions provider of standard and custom flanges, fittings and
If a flange is installed in a North American drinking water system, the spec sheet is almost certain to reference NSF®/ANSI/CAN 61 before any other standard. NSF/ANSI/CAN 61 determines whether a flange, gasket, or coating is permitted to contact potable
NSF-61 and NSF/ANSI/CAN 372 are two consistently paired standards which are often called “NSF-61/372” and treated as one certification. strict limits on lead content leaching in drinking water systems. This standard has its own legal basis and its own testing
Warehouse Expansion Supports Data Centers, Exhaust, Waterworks, and HVAC Markets FOR IMMEDIATE RELEASE GREENFIELD, Ind., August 17th, 2026 — API International has completed a major expansion of its Greenfield, Indiana, warehouse, increasing its Midwest warehouse capacity by 75% while positioning
A weld neck flange features a tapered hub that is butt-welded directly to a pipe, creating a continuous, full-penetration joint. This design makes it the industry standard for high-pressure, high-temperature, cyclic, and heavy-use applications across process plants, power facilities, and
Selecting the right carbon steel flange begins with understanding your application, including its service conditions, required material grade, and appropriate flange type. Getting one of these wrong may not cause an immediate problem, but issues typically surface later, during pressure
Carbon steel and alloy steel flanges serve different purposes based on the demands of the piping system. Both of them share a common structural base, but each is engineered for a different kind of service. Carbon steel delivers reliable strength
