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Carbon Steel Flange

Carbon steel flange, plate flange, or end flange connector made of carbon steel. It contains a carbon steel flange, called the carbon steel flange. Common materials are cast carbon steel plate Grade WCB, forging A105, or Q235B, A3, 10#, #20 steel, #45 steel, Q345B, etc.

Usually to prevent rust flange surface with electroplating layer (yellow zinc, white zinc, etc.), or brush antirust oil and spray antirust paint treatment.

Carbon Steel Flanges VS Iron Flange

1. Standard (Similarity):

Both carbon steel & iron are flange's materials. Carbon steel flanges & iron flanges have ANSI/ASME, DIN, BS, JIS, UNI & EN 1092-1 standard.

2. Design Pressure (Difference):

Generally speaking, the pressure of is iron flange is lower than carbon steel.

Iron flanges pressure only can be PN6. Carbon steel flanges pressure is able to be PN40.

3. Type & Facing (Similarity):

Type: Slip-on, Weld Neck, Blind, Lap Joint, Socket Weld, Threaded. Plate, Loose, SOP, SOH(A B C )

Facing: RF, FF, RTJ

4. Installation (Similarity and Difference):

The mechanical properties of carbon steel flanges are better than that of iron flanges.  

Both carbon steel flanges and iron flanges need to be treated against rust.

Carbon Steel Flanges FAQs

Q How Many Types of Flanges Are There?

To connect different pipes and valves to achieve different functions, there are 6 types of common flanges as below: 

Weldneck flange

Threaded Flanges

Socket-Weld Flanges

Slip-On Flanges

Lap Joint Flanges

Blind Flanges

Q How to Inquiry Flanges?

It is best to describe as specific as you can. Details about flanges are including type(SO, WN, TH, BL, SW, LP, etc.), material, pressure, facing( RF, FF, RTJ, etc.), standard, and quantity, for example, 2” ASTM A105 SO flange, Class 150, RF, ANSI B16.5

Q How Long is Lead Time for One Flange Order?

Generally, the lead time is about one month. If you have a deadline, please let us know in advance and we will try our best to fulfill your order in time.

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