Wenzhou Longsheng Stainless Steel Products Co., Ltd., with nearly 20 years of manufacturing experience, is a professional manufacturer and exporter dedicated to stainless steel pipe fittings. Located in Wenzhou, we integrate R&D, production, testing and sales, providing reliable pipeline solutions for global customers.
We specialize in producing stainless steel elbows, tees, crosses, reducers, flanges, caps, laps and seamless pipes. Our products cover DN10-DN1200, including seamless, welded, long-radius, short-radius and 180° U-shaped types, and support customized non-standard fittings. Materials include 304, 304L, 321, 316, 316L, 317L, 310S, fully complying with ASTM B16.9/B16.5, GB/T12459, GB/T13401, SH3408, DIN, JIS and other international standards.
Equipped with automatic forming machines, electric heat treatment furnaces, intelligent temperature control, shot blasting and pickling-passivation lines, we conduct strict quality control via spectrum analysis, X-ray, ultrasonic, penetration testing, hardness and wall thickness inspection to ensure stable performance.
Our products are widely used in paper, shipbuilding, petroleum, chemical, electric power, bioengineering, natural gas, sewage treatment, construction, medicine and food industries. They are exported to Europe, America, Japan, Malaysia, the Middle East, Vietnam and other regions, winning high recognition and market share.
Adhering to the tenet of "Quality Immortal, Credit Eternal", we take integrity as the foundation, quality as the core, and perfect after-sales service as support. We sincerely welcome global customers to visit our factory, negotiate business and establish long-term cooperative relationships.