Integral flanges are also called long welded neck flanges (LWN flanges). The working pressure ranges from class150 to class2500, and the materials are usually carbon steel and stainless steel. Long weld neck flanges are very suitable for high-pressure pipelines because the weld is far away from the ring to avoid the combination of bending stress and weld stress. Long weld neck flanges perform well under certain stress and temperature fluctuations. According to customer needs, long weld neck flanges are available in various lengths, inner diameters, outer diameters and sizes. Many factories produce long-necked flanges by welding steel pipes in the neck of the flange, so the long-necked flanges produced are of poor quality (prone to safety accidents), but they are cheap.

EATHU is a supplier who be specialized in pipe fittings(forged flange, butt welding pipe fitting, forged pipe fitting 3000#, stainless steel screw fitting, barrel nipples and socket), ductile iron pipe fittings, valves(butterfly valve, ball valve, gate valve, globe valve, check valve, Y-strainer) and casting parts.

EATHU is a prefessional supplier specialized in DIN 3352 F4/F5 Resilient Seated Flanged Gate Valves,DIN3352 F4 Metal-seal Flanged End Gate Valve,BS5150 Non-rising Stem Flanged End Gate Valve,BS5163 Resilient Seated Flanged Gate Valve,BS3464 Non-rising Stem Gate Valves,MSS SP-70 Metal-Seal Cast iron Non-Rising Stem Gate Valve,MSS SP-70 Metal-Seal Cast iron Rising Stem Gate Valve,AWWA C509 AWWA C515 Cast iron Gate Valve,Socket End Gate Valve for PVC pipe,DIN3202 Cast Steel Gate Valve,API600 OS&Y Cast Steel Gate Valve.

Eathu Brand wafer type butterfly valve Face To Face: API 609, MSS SP-67, DIN3202, BS EN558-1 Flange Drilling: ANSI B16.1 class150, BS4504 PN10/PN16, DIN2501 PN10/PN16

The opening and closing parts of the gate valve are the valve gate, the movement direction of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully opened or fully closed, it can not be used for regulation and throttling.

The differences between Butterfly Valve and Ball Valve

What is the difference between INCH and DN

MSS SP-97 Butt Welding outlet Reduced Diameter XS Wall Thickness