Complex Manufactured Parts

Ring Rolled Forging

At Seglian, we manufacture V-band sealing joint rings, Marmon adaptor rings, and other rolled flanges for industries such as oil, gas, and chemicals. Using the ring rolled forging process, we create near net shape rings as one-piece forgings derived from large-diameter bar stock, ensuring precision, durability, and efficiency in every component.

Current Range of Ring-Rolled Forged Products

At Seglian, we manufacture medium-sized, machined ring-rolled forgings using stainless steel, carbon steel, and alloy steel—each tailored to your application, performance requirements, and part geometry. Our product range includes. Our ring-rolled forging capabilities are built to support demanding timelines and high-performance expectations—whether you’re prototyping or scaling full production.

V-Band Sealing Joint Rings: – Used in DPF and SCR systems, available in diameters up to 400mm with variable cross-section geometries.

Marmon Adaptor Rings: – Produced in sizes from 75mm to 300mm with either spherical or straight sealing faces.

Other Rolled Flanges: – Serving industries such as oil, gas, and chemicals, where precision and performance are critical.

The right casting process for every application:

Our near net shape ring-rolled forging process is built for efficiency, quality, and cost control. By optimizing the gross-to-net material ratio, we significantly reduce machining time, cut material waste, and lower overall production costs—without sacrificing performance.

Lower Cost: Less machining = more savings

Faster Turnaround: High-speed forming = faster fulfillment

Lightweight Strength: Precision forging = reduced weight with integrity

Scalable Output: Designed for both high- and low-volume runs

Superior Quality: Grain refinement and consistency in every part

Quality management system for ring roll forged Marmon rings ensuring precision and reliability.