Flanges for Lumber & Pulping Operations
Chemical-resistant flanges engineered for wood treatment, pulping liquor systems, recovery boilers, and harsh mill environments.
Lumber Mill Solutions
Lumber and pulp mills operate in some of the most chemically aggressive environments in industrial processing. ApiFlange supplies stainless steel and specialty alloy flanges engineered to withstand black liquor systems, kraft process chemicals, wood treatment compounds, and high-temperature recovery boiler service. With expertise in both pressure and low-pressure mill systems, we deliver durability and corrosion resistance that extends equipment life and reduces maintenance downtime in these critical facilities.
Chemical Resistant
Black liquor duty
High Temperature
Recovery boilers
Proven Durability
Mill tested
Common Flange Types
Slip-On Flanges
Standard mill configuration for black liquor, pulping, and condensate lines. Field-weldable design.
Blind Flanges
Equipment termination and isolation points for circuit isolation and maintenance access.
Plate Flanges
Recovery boiler nozzles, pump suction/discharge, and heat exchanger connections.
Weld Neck Flanges
High-pressure recovery boiler and steam system applications requiring reinforced hubs.
Materials for Pulp & Paper Service
Pulp and paper mill chemicals demand corrosion-resistant materials. Stainless steel is the standard for kraft process systems, with specialty alloys for the most severe applications.
Standard Materials
- •Stainless 304/304L
- •Stainless 316/316L
- •Black liquor compatible
- •Proven mill service
Premium Options
- •Duplex stainless steel
- •High-temperature alloys
- •Specialty compositions
- •Extended mill life
Optimize Your Mill Operations
Contact our pulp and paper specialists to discuss black liquor systems, recovery boilers, and mill-proven flange solutions.