DMG (Donghao Metal Group Limited ), as a leading manufacturer of stainless steel pipes and tubes, has been providing superior piping and tubing solutions for our numerous customers in various industries during the past 15 years. with substantial investments and ongoing innovation, we now offer a more complete line of products, a wider range of sizes, and more material grades , including nickel alloys , super duplex and titanium.

Shanghai Longda Alloy Material is a Wholly Owned Subsidiary company of Wuxi Longda Metal, offers Copper alloys, High Performance alloys and Nickel-based, Cobalt based high temperature alloys for the global market. These alloys are highly engineered to offer a superior combination of heat resistance, high-temperature corrosion resistance, toughness and strength properties.