Wenzhou Licheng Steel Industry Co., Ltd., based in Wenzhou’s Longwan District, produces 316 and 316L stainless steel tubes and pipe fittings as part of its stainless steel product range. The company manufactures seamless pipes, butt-weld fittings, and flanges, with 316L included among its core material grades. 316L, an ultra-low-carbon austenitic grade with molybdenum addition, offers improved resistance to chloride corrosion and intergranular corrosion after welding, making it suitable for petrochemical, chemical processing, and marine applications. Tube dimensions cover outer diameters from 6mm to 580mm and wall thicknesses from 2mm to 40mm, with production aligned to GB, ASTM, and other standards. Manufacturing processes include heat treatment to restore corrosion resistance and mechanical stability, along with CNC machining for flange sealing faces. A quality inspection system covers dimensional checks, wall thickness measurement, and surface examination. The company serves petrochemical, natural gas, shipbuilding, and water treatment sectors, reflecting its practical approach to stainless steel pipeline components.