Jiangsu Runsu Machinery Materials Co., Ltd. is a professional manufacturer and exporter of steel materials and custom-machined components, located in Wuxi, Jiangsu, China. We specialize in forged and hot-rolled round bars, precision shafts, seamless steel pipes, and a wide range of CNC-machined products.
With years of experience in steel production and international trade, RUNSU has established a reputation for quality, reliability, and technical expertise. Our product range covers carbon steel, alloy steel, and bearing steel, including popular grades such as 42CrMo, 40Cr, GCr15, 20CrMnTi, and AISI 4140.
We support OEM and customized production, capable of processing according to customer drawings and specifications. Our machining capabilities include turning, milling, drilling, grinding, and heat treatment, ensuring strict dimensional tolerances and excellent mechanical performance.
Our products are widely used in machinery, mining, energy, automotive, shipbuilding, and construction industries. We export to Europe, Southeast Asia, the Middle East, North America and other global markets.
