
Our core product line covers stainless steel elbows, tees, stamped elbows, concentric/eccentric reducers, stainless steel flanges, butt-weld flanges, slip-on flanges, and related piping components. Available materials include 304, 321, 304L, 316, 316L, 2520, 904L, Mo-Ti alloy, carbon steel, and heat-resistant steel. Zhejiang Longxing manufactures stainless steel flange fittings in a full range of specifications to match standard and custom requirements.
Over years of development, Zhejiang Longxing Flange Pipe Fitting Co., Ltd. has built an integrated production line covering smelting, forging, pressing, and CNC machining. Our closed-die forging process for flange fittings was developed in-house through continuous refinement—helping reduce material waste, shorten lead times, and maintain tight dimensional control. This vertically integrated workflow is how we keep quality consistent from raw material to finished part.


We maintain a dedicated support team to respond to inquiries and follow up on orders in a timely manner. Guided by the principle that "product quality and service go hand in hand", we focus on clear communication, on-time delivery, and reliable follow-through. Our goal is straightforward: solve problems quickly, keep our commitments, and build long-term trust with every customer.
Zhejiang Longxing Flange & Pipe Fitting Co., Ltd. manufactures a full range of stainless steel pipe fittings, including elbows, tees, concentric/eccentric reducers, stainless steel flanges, weld neck flanges, slip-on flanges, and custom non-standard components. Materials available: 304, 321, 304L, 316, 316L, 310S (2520), 904L, Mo-Ti alloy, carbon steel, and heat-resistant steel. Size range: DN10–DN1600. Standards covered: GB, JIS, BS, ASME/ANSI, DIN, and made-to-order non-standard specifications.
The technical requirements for stainless steel elbows are as follows:Due to the fact that most pipe fittings are used for welding, in order to improve welding quality, the ends are beveled, with corre...
The commonly used standards for stamped elbows are American standard ANSIB16 9 and 16 28....