Thick-Wall Cylindrical Forged Sleeves
Common Material Grades, Typical Size Ranges, and Main Applications of Thick-Wall Cylindrical Forged Sleeves
Common Material Grades
Carbon Steel: 1045 (C45), S355J2G3, etc.
Alloy Steel: AISI 4130, 4140, 4340, 8620, as well as 42CrMo4, 34CrNiMo6, 30CrNiMo8, 18CrNiMo7-6, etc. These are the most widely used materials
Stainless Steel/Special Steel: 304L, 316L, 17-4PH, and the Inconel series, etc.
Size Range
Small to Medium Sizes: Outer diameter up to 1000 mm, length up to 3000 mm, weight up to 12 metric tons
Large/Extra-Large Sizes: Outer diameter 4000–5000 mm, length up to 10,000 mm (10 meters), weight up to 30 metric tons
North American Forgemasters: Outer diameters up to 4,064 mm (160 inches), lengths exceeding 10,160 mm (400 inches), and weights exceeding 147 metric tons (325,000 pounds)—representing industry-leading capabilities
Power Plant Thick-Walled Pipe Standards: In accordance with Chinese National Standard GB/T 41982-2022, with an outer diameter of no less than 219 mm and a wall thickness of no less than 25 mm
Major Application Areas
Oil and Gas: Used in high-pressure components such as drilling equipment, blowout preventers, valves, and pump bodies
Power Generation Industry: Used as thick-walled pipes and forgings made of high-alloy heat-resistant steel, serving as critical components of power plant equipment
Engineering and Heavy Machinery: Used as blank billets for hydraulic cylinders, bearing rings, and press pistons in heavy equipment
Gears and Transmission Systems: Used as blanks for transmission components such as large internal gear rings and internal spline sleeves