Zhejiang Matech Industry Company Limited

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Hangzhou Matech Steel Company Limited
Tel: +86-571-28350111
Fax: +86-571-86693517
Email: sales@matech-steel.com
Add: Floor 10, Xixi Vally E-Building, Xihu District, Hangzhou, Zhejiang province, China
Flanges by Standard

Flanges by Standard

Flanges specification, Standard and identification Below you will find a short description and definition of each type, completed with an detailed image. · Most common flange types · What is a Flange? · What is the use of a blind flange? · 5 Different Types of ANSI Flanges · The 6 Common Types...
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Flanges specification, Standard and identification

Below you will find a short description and definition of each type, completed with an detailed image.

· Most common flange types

· What is a Flange?

· What is the use of a blind flange?

· 5 Different Types of ANSI Flanges

· The 6 Common Types of Flanges

· Pressure Classes of Flanges

· Applications of flanges

· Uses of Weld Neck Flanges

· Facing according to EN 1092-1

· The main elements of the flange

· Forged flange and sealing face...

· Flanges Used in Piping Systems

· Types of ASME/ANSI flanges

· Flanges Manufacturing Process

· Forged flange process

· Flange Face Surface Finish

· Types of Pipeline Flange Faces

· Measure the size of a flange

· Packing Works for Steel Flanges

· Flanges Raw Material

· Flange materials acc. to ASTM

· General flange standards

· Flange Connections

· Abbreviations of flange

General flange standards

All flanges are manufactured in accordance with industry-accepted standards.

Flange - ASME B16.36, Orifice Flange (1/2"-24")

Slip-on Flange: Class 300, Class 400, Class 600, Class 900, Class 1500 
Threaded Flange: Class 300, Class 400, Class 600, Class 900, Class 1500 
Weld Neck Flange: Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500

Flange - Industry Standard Flange (also called Large Diameter Flange) (26"-larger)

Industry Standard Flanges have no national standard code or are they covered by any governing body.

Blind Flange: Class 75, Class 125, Class 175, Class 250, Class 350
Weld Neck Flange: Class 75, Class 125LW, Class 125, Class 175, Class 250, Class 350
Slip-on Flange: Class 75, Class 125LW, Class 125, Class 175, Class 250, Class 350

Flange - AWWA Standard Flange

AWWA C207

· Steel Ring Flange: Class B, Class D, Class E, Class F

· Steel Hub Flange: Class D, Class E

· Blind Flange: Class B, Class D, Class E, Class F

AWWA C207

· Steel Ring Flange: Class B, Class D, Class E, Class F

· Steel Hub Flange: Class D, Class E

· Blind Flange: Class B, Class D, Class E, Class F

ASME STANDARDS

· ASME B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250

· ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard

· ASME B16.24 - Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500, and 2500

· ASME B16.36 - Orifice Flanges

· ASME B16.42 - Ductile Iron Pipe Flanges and Flanged Fittings: Classes 150 and 300

· ASME B16.47 - Large Diameter Steel Flanges, NPS 26 Through NPS 60

ASTM STANDARDS

· ASTM A105 / A105M - Specification for Carbon Steel Forgings for Piping Applications

AWWA STANDARDS

· AWWA C115 - Standard for Flanged Ductile Iron Pipe with Ductile-Iron or Gray-Iron Threaded Flanges

MSS STANDARDS

· MSS SP-9 - Spot Facing for Bronze, Iron and Steel Flanges

· MSS SP-25 - Standard Marking Systems for Valves, Fittings, Flanges, and Unions

· MSS SP-44 - Steel Pipeline Flanges

· MSS SP-106 - Cast Copper Alloy Flanges and Flanged Fittings Class 125,150, and 300

ASME B16.5 and ASME B16.47 cover pipe flanges up to NPS 60 (B16.5 from 1/2" to 24" and B16.47 from 26" to 60"). ANSI B16.47 covers two series of flanges, Series A is equal to MSS SP-44-44, and Series B is equal to API 605 (API 605 has been canclled).

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    Hangzhou Matech Steel Company Limited
    Tel: +86-571-28350111
    Fax: +86-571-86693517
    Email: sales@matech-steel.com
    Add: Floor 10, Xixi Vally E-Building, Xihu District, Hangzhou, Zhejiang province, China
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