Wenzhou Longsheng Stainless Steel Products Co., Ltd.

Wenzhou Longsheng Stainless Steel Products Co., Ltd.

Wenzhou Longsheng Deepens Custom Pipe fittings Service to Meet Global Complex Pipeline Engineering Demands

2026 07/30

 

Intelligent Upgrade of Stainless Steel Pipe Fittings Manufacturing Enables Full-Spec Pipeline Solutions at Wenzhou Longsheng

Wenzhou Longsheng Stainless Steel Products Co., Ltd. has completed the intelligent transformation of its production workshop, further lifting the overall level of Stainless Steel Pipe Fittings Manufacturing, and forming a one-stop supply system covering seamless pipe, Welded pipe, Socket Elbow, Butt-Welding Fitting and custom pipe fittings for global EPC contractors and pipeline distributors.

Boasting nearly 20 years of industry accumulation, the factory holds ISO9001 certification and special equipment production qualification, with a complete set of forming, heat treatment and surface processing equipment. Its product matrix is built on two core base materials: seamless pipe and Welded pipe. The seamless pipe covers DN10-DN600, matched with standard Socket Elbow and a full range of Butt-Welding Fitting such as tees, reducers, pipe caps and flanges; while large-diameter Welded pipe above DN200 and heavy-duty Butt-Welding Fitting adopt certified welding procedures to withstand high pressure and corrosive media.

The biggest highlight of the company’s Stainless Steel Pipe Fittings Manufacturing lies in mature custom pipe fittings development capacity. The technical team can independently design and produce non-standard Socket Elbow, special wall-thickness seamless pipe, irregular Butt-Welding Fitting and shaped pipeline accessories based on clients’ drawings, medium characteristics and site working conditions. Customers can select multiple stainless steel grades including 304, 316L, 321 and 310S, with optional sandblasting, pickling passivation or mirror polishing surface treatments to fit petroleum, chemical, pharmaceutical, marine and food-grade pipeline systems.

Before delivery, every batch of seamless pipe, Welded pipe, Socket Elbow and Butt-Welding Fitting undergoes strict full-item testing via spectrometers, ultrasonic flaw detectors and thickness gauges, fully complying with ASTM, GB, DIN and JIS international standards. The complete testing system eliminates hidden quality risks and ensures stable operation of finished products in harsh industrial environments.

The professional foreign trade team offers full-cycle services including technical consultation, order tracking, commodity inspection and after-sales troubleshooting. Moving forward, Longsheng will continue to expand the production line of custom pipe fittings, enrich the specification range of seamless pipe, Welded pipe, Socket Elbow and Butt-Welding Fitting, and consolidate the advantage of Stainless Steel Pipe Fittings Manufacturing, striving to deliver reliable integrated pipeline solutions to more than 30 countries around the world.

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