PRODUCT
Manufacturer of standard and custom pipe flanges made from stainless steel and other materials. Types include slip-on, weld neck, blind and lap joint flanges.
LONGAN FLANGE

Pressure Vessel Flange series

Pressure vessels are common in petrochemical, power, and light industries. Types include flat welding, long-neck butt-welding and forged tube sheets and baffle plates.
Plate flanges
Easy to source materials for, low in cost. it is commonly used in chemical engineering, construction, water supply, drainage, petroleum, light and heavy industries, refrigeration, sanitation, plumbing, firefighting, power generation, aerospace, and shipbuilding.
Slip-on flanges
It is a type of flange where the steel pipe or fittings extend into the flange and are connected to equipment or pipelines through fillet welds.
Weld Neck Flanges
It is distinguished by its long, inclined high neck that extends from the flange and pipe weld joint to the flange face. Used in pipelines subject to significant thermal expansion or other loads causing high stress at the flange, are suitable for pipelines with significant fluctuations in pressure and temperature.
Socket Weld Flanges
A socket weld flange is a type of flange where the end of the pipe is inserted into a step-shaped flange ring. It offers better rigidity, minimal welding deformation, and improved sealing performance are used in boiler pressure vessels, petroleum, chemical engineering, shipbuilding, pharmaceuticals, metallurgy, machinery, stamped elbows, and food processing industries.
Threaded Flanges
Threaded flange has its inner bore machined with pipe threads and connects to pipes with matching threads. they are suitable for high-pressure pipe connections, but not to use in conditions where temperatures exceed 260°C or are below -45°C to avoid potential leakage.
Lap Joint Flanges
It is a movable flange plate typically used with water supply and drainage fittings.
Blind Flanges
Blind flange is a flange without a central hole, used to block the end of a pipeline. its function is similar to that of end caps and pipe caps, but a blind flange provides a removable sealing solution, whereas end caps are intended to be permanent.
+86-15727821389
+86-15167894448
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