316L large diameter flange cover
Blind flange, also known as blind flange, is a flange without a hole in the middle used to seal pipeline openings.
The range of flange models includes: DN15-DN6000.
The execution standards for flange covers are: chemical standard HG20592-2010, national standard GB/T9119, petrochemical standard SH/T3046, mechanical standard JB/T81-94, etc.
The materials of flanges are carbon steel, stainless steel, alloy steel, and duplex steel.
Flanges are essential in our work and life, including gas, heat, nuclear power, electricity, petroleum, chemical, shipbuilding, urban construction and other industries.
The current standard for neck flange covers in China is divided into two systems, namely the PN series (European system) and the Class series (American system).
The PN series nominal pressure rating is represented by PN, which includes the following nine levels: PN0.25, PN0.6, PN1.0, PN1.6, PN2.5, PN4.0, PN6.3, PN10.0, PN16.
The nominal pressure rating of the Class series is represented by Class, which includes the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500.
The sealing forms of flanges are: raised face (RF), concave face (FM), raised face (M), tenon face (T), groove face (G), and full face (FF).
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