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1,500+ Customers Across US, CAN, and MEX

Flanges & Custom Parts
For The Lumber Industry

OUR ROLE IN

THE Lumber industry


We provide flanges, expansion joints, and custom parts to support a wide range of lumber operations. Our products are trusted by companies in pulp and paper, veneer, plywood, dimensional lumber, and ACB utility pole manufacturing. Whether it’s process piping, equipment connections, or specialty components, we offer dependable solutions that stand up to tough environments and keep production lines running efficiently. With quick shipping and custom options, we’re ready to meet your project needs.

Our Process

Define Customer Requirements

We begin by understanding your goals, whether it's reducing cost, improving quality, or launching a new product. Together, we define technical and commercial requirements to ensure full alignment from the start.

Global Manufacturing Capabilities

With worldwide manufacturing resources, API International provides both standard and custom flange solutions. Our network of facilities and in-house expertise allow us to deliver the right fit for your needs, whether it’s off-the-shelf or built to specification.

Collaborative Development

Our engineers work closely with customers to refine designs, reduce costs, and ensure manufacturability. We stay connected with your team throughout to keep progress clear and efficient.

Approval & Launch

After final review of samples, production begins. Our team oversees quality and delivery coordination to ensure smooth execution and traceability from start to finish.

Explore Our products in the
Lumber Industry

Lumber Industry FAQs

Flanges and fittings are commonly used across process piping, equipment connections, and specialty components that support lumber operations. They’re widely used by facilities in:

  • Pulp and paper
  • Veneer
  • Plywood
  • Dimensional lumber
  • ACB utility pole manufacturing

At API International, we provide connection solutions and custom components to support a wide range of lumber operations, which include:

  • Flanges: Bolted, gasketed connections for process piping and equipment tie-ins that require serviceability.
  • Expansion joints: Used to accommodate movement, vibration, or thermal growth and help reduce piping stress near equipment.
  • Custom parts: Machined components or non-standard connection pieces built to match project requirements and existing systems.

Common standards include:

  • ASME B16.5 (NPS 1/2 to 24): The most common industrial flange standard for steel/alloy flanges.
  • ASME B16.47 (NPS 26 to 60): Used for large-diameter industrial flanges. Includes Series A (more common) and Series B (different/lighter bolt pattern). 
  • AWWA C207 (steel ring/plate flanges) — widely used for larger-diameter, plate-style flanges in industrial service (including the lumber industry).
  • AWWA C228 (stainless steel pipe flanges) — commonly specified when stainless steel construction is required for corrosion resistance and waterworks-style bolt-up compatibility.

Flanges can be welded or screwed on, depending on the type of flange and piping system requirements. When selecting a flange type, some important aspects include pressure capacity, pipe size, and intended application.

Common flange types include:

To order flanges and pipe fittings from API International, share your pipe size, the dimensional standard or drilling pattern required (ASME B16.5/B16.47, AWWA C207/C228, or the project spec), and where the parts will be used in the plant (process piping, equipment connections, or specialty components supporting pulp and paper, veneer/plywood, dimensional lumber, or ACB utility pole manufacturing). If the connection needs to handle movement or vibration, note that as well for potential expansion joint selection. Contact API International’s experienced team and we will help you select the right flange for your application.

About API International

Not all flanges are made the same

At API International, our custom manufacturing capabilities set us apart. With an in-house machine shop, we transform your designs into precision parts quickly. From single prototypes to full production runs, we deliver cost‑effective pricing, dependable performance, and rapid turnaround. Flexible material options and rigorous quality checks ensure consistency from part to part.

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The 4 Advantages
of API

Tested, Trusted,
Proven

99.5% order accuracy rate
Our boots-on-the-ground approach ensures close collaboration with our suppliers. Every flange, valve, and fitting undergoes rigorous inspection and thorough documentation, ensuring consistent performance and reduced field issues.

Delivery You Can
Count On

Active customers in all 50 states + Canada and Mexico
When your schedule is on the line, knowing our U.S. warehouses are stocked and orders ship same-day gives you peace of mind, so you can focus on the task at hand, not the clock.

Your Specs, Our Precision

700+ machined-to-spec parts created each year
Collaborate directly with our engineers to bring your unique specifications to life, ensuring every component performs as if it were built with your project in mind.

Personalized Support

1,500+ unique customers served over 45+ years
Our dedicated account team partners with you from quote to delivery, answering questions and offering expert advice so you can make confident decisions and avoid costly delays.

Industry Experience

Other Industries
We Serve