Zhejiang Kangxin Steel Pipe Co., Ltd., based in Suichang, Lishui, produces 316 and 316L stainless steel seamless tubes as part of its austenitic stainless steel product range. The company operates a complete production line from piercing and cold drawing to heat treatment, with tube dimensions covering outer diameters from 6mm to 720mm and wall thicknesses from 1mm to 50mm. 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 fiber, pharmaceutical, and heat exchanger applications. Production follows GB/T 14976, ASTM A312, and other domestic and international standards, with quality control covering spectral analysis, eddy current and ultrasonic testing, and mechanical property verification. The company holds ISO 9001, special equipment manufacturing licenses, and EU PED certification, reflecting its practical approach to serving corrosion-resistant piping requirements.