HRSG Headers and Manifolds

Custom Fabricated to Install Flawlessly in Your HRSG System

Chanute Manufacturing is backed by over 33 years of industry-leading experience in the custom fabrication of HRSG headers and manifolds. We have precision-engineered and manufactured virtually every type of HRSG pressure part on the market – from reheater to feedwater heater.

Our craftsmen understand the complex design details required to produce a reliable HRSG header or manifold that will perform flawlessly season after season. Moreover, Chanute’s decades of diverse fabrication experience has enabled us to manufacture quality components for virtually every OEM’s unique header joint styles.

We manufacture premium HRSG headers and manifolds for the most common joint styles used throughout the industry, including:

Full Strength (Stick-Through) HRSG Header Joints

This is the most common joint style utilized today and can be applied to a variety of coil designs. The joint is utilized in single or multiple row harp configurations and for both straight tube sidehill and bent tube radial layouts. A variety of hole bevels are used depending on joint configuration. They range from step bevels to constant depth bevels.

Full Penetration HRSG Header Joints

The full penetration tube to header weld is also a common joint style, particularly in superheaters and reheaters. The full penetration (full tube wall thickness) is accomplished by either a straight tube bore with the tube saddled on to the header or by spot face machining of the header to allow more of a butt weld configuration.

Socket Seat

The socket seat tube to header weld is also a common joint style, particularly in upper headers to guard against crevice crack corrosion. The socket seat is accomplished by machining a seat to prevent the tube from sticking completely through the header.

Fabrication Expertise That makes a Difference

With 33 years of header fabricating experience, Chanute knows the design and workmanship procedures that are required to successfully manufacture high alloy headers. Some material types must also be processed very carefully, in particular P91 Cr-Mo and 2205 duplex stainless. Both of these material types are susceptible to weld cracking during fabrication unless special care and fabrication techniques are employed. Additionally, trace elements must be controlled in the base and weld-filler materials to ensure proper metallurgy.

Engineering Upgrades for Your HRSG System

Chanute’s engineering staff can upgrade your replacement headers to resolve operating and mechanical issues. It is also common for our customers who are experiencing Flow Accelerated Corrosion (FAC) to upgrade material types to improve reliability and extend the life of the header. Chanute's engineers are qualified to evaluate flow distribution, thermal expansion and perform the applicable code calculations.

Your Single-Source Manufacturer of Premium HRSG Headers and Manifolds

Chanute is America’s leading manufacturer of quality HRSG headers and manifolds for virtually every OEM application. Backed by over 40 years of precision fabrication expertise in the heat transfer and steam generation sector, we offer a complete range of HRSG system components for commercial and industrial operations around the globe – from the power generation sector to the oil and gas industry.

Contact our engineering experts to discuss the custom specs and requirements of your HRSG headers and manifolds.