PRODUCT

The full name with neck flat welding flange with neck flat welding steel pipe flanges English name: Slip-on referred SO
With neck flat welding flange welded flange plate with the same also the steel pipe, pipe fittings and so extends into the flange and connected by a fillet weld equipment or pipeline flange.

Domestic common manufacturing standards are:

People’s Republic of China National Standard GB / T 9116-2010 with a neck flat welded steel pipe flanges (Hubbed slip-on-welding steel pipe flanges);

People’s Republic of China Chemical Industry Standard HG / T20592 ~ 20635-2009 in PN series (European system) HG / T20592 ~ 20635-2009 in Class series (American System)

Sealing surface forms with neck flat welding flange are:

Raised face (RF), concave (FM), convex (M), the tongue surface (T), the groove surface (G), the whole plane (FF).

Diameter range with neck flat welding flange: DN10 ~ DN600

Scope: PN series PN2.5 ~ PN40; Class series Class150 ~ Class1500

Flange material: carbon steel, Luo molybdenum steel, 304,316,304L, 316L, 321,347, CF8C.

Manufacturing process: forging.

Advantages: with neck flat welding flange welded flange belong, because there is a short-necked, thereby increasing the strength of the flange efforts to improve the bearing flange. It can be used in higher pressure pipelines.