Seamless steel pipes
Gcr15 precision seamless steel pipe
GCr15 is a high-carbon chromium bearing steel specified under GB/T 18254 and supplied as precision seamless steel pipe or tube under YB/T 4146. It is utilized for rolling-bearing components and other mechanical parts requiring high hardness, superior wear resistance, and robust contact-fatigue strength after proper heat treatment. Chemistry controls, residual limits, and annealed hardness adhere…
Super 13Cr
Super 13Cr (ISO 13680 Group 2, UNS S41426 and UNS S41425) is a low-carbon martensitic stainless steel seamless pipe engineered for downhole oil country tubular goods. Featuring 11.5–13.5% chromium with nickel and molybdenum additions, this corrosion-resistant alloy provides high yield strength and superior resistance to wet carbon dioxide and mild sour environments, outperforming standard API…
