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What is the Variation Among Class 150 Flange, Class 300 Flange & Class 600 Flange?

What is the variation among Class 150 Flange, Class 300 Flange & Class 600 Flange?

Bhansali Metalloys Inc supply a good vary of Flanges, which has a number of outstanding options like dependable, well tested, safe usage, durable, low maintenance, ranked material, etc. we tend to procure and provide wide assortment of those Stainless-Steel Flanges that are factory-made from qualitative raw material by our trusted experts. The inputs used in the fabrication of these products are purchased from certified suppliers of the industry after severely examining their quality and sturdiness.

Steel Flanges are categorized as per ASME B16.5 standard. The pressure rating of flange scale from Class 150 to Class 2500. The label “lb”, “class” and “#” are used equivalently to identify the pressure rating of the flange. The truth is that 150 lb has no connection to 150 psi and so does the 300 or 600 lb does not correspond to 300 or 600 psi pressure rating. Pressure rating of the flange turn on the material (A105, stainless, nickel alloy etc.), the heat treats condition and pressure “class”. Here we will use the phrase “class” to NOT confuse it with pressure “rating”. So, what is class 150 flange or ASME B16.5 class 150 flange, as the question raised by many buyers.

Let’s define the pressure rating of steel pipe flange. The table below shows the pressure and temperature rating of ASTM A105 Carbon Steel Flange:

Pressure ClassClass 150Class 300Class 400Class 600Class 900Class 1500Class 2500
PN Number205068100150250420
Service Temperature (F)Maximum Non-Shock Pressure (Psig)
800Not Suggested Above 800
ASTM A105 Carbon Steel Flange

We Deal in All Types of Flanges Class such as:

Slip On Flanges:

Slip on Flanges Class 150, Slip on Flanges Class 300, Slip on Flanges Class 400, Slip on Flanges Class 600, Slip on Flanges Class 900, Slip on Flanges Class 1500, Slip on Flanges Class 2500.

Blind Flanges:

Blind Flanges Class 150, Blind Flanges Class 300, Blind Flanges Class 400, Blind Flanges Class 600, Blind Flanges Class 900, Blind Flanges Class 1500, Blind Flanges Class 2500.

Threaded Flanges:

Threaded Flanges Class 150, Threaded Flanges Class 300, Threaded Flanges Class 400, Threaded Flanges Class 600, Threaded Flanges Class 900, Threaded Flanges Class 1500, Threaded Flanges Class 2500.

Long Weld Neck Flanges:

Long Weld Neck Flanges Class 150, Long Weld Neck Flanges Class 300, Long Weld Neck Flanges Class 400, Long Weld Neck Flanges Class 600, Long Weld Neck Flanges Class 900, Long Weld Neck Flanges Class 1500, Long Weld Neck Flanges Class 2500.

Companion Flanges:

Companion Flanges Class 150, Companion Flanges Class 300, Companion Flanges Class 400, Companion Flanges Class 600, Companion Flanges Class 900, Companion Flanges Class 1500, Companion Flanges Class 2500.

Socket Weld Flanges:

Socket Weld Flanges Class 150, Socket Weld Flanges Class 300, Socket Weld Flanges Class 400, Socket Weld Flanges Class 600, Socket Weld Flanges Class 900, Socket Weld Flanges Class 1500, Socket Weld Flanges Class 2500.

Weld Neck Flanges:

Weld Neck Flanges Class 150, Weld Neck Flanges Class 300, Weld Neck Flanges Class 400, Weld Neck Flanges Class 600, Weld Neck Flanges Class 900, Weld Neck Flanges Class 1500, Weld Neck Flanges Class 2500.

Lap Joint Flanges:

Lap Joint Flanges Class 150, Lap Joint Flanges Class 300, Lap Joint Flanges Class 400, Lap Joint Flanges Class 600, Lap Joint Flanges Class 900, Lap Joint Flanges Class 1500, Lap Joint Flanges Class 2500.

Orifice Flanges:

Orifice Flanges Class 150, Orifice Flanges Class 300, Orifice Flanges Class 400, Orifice Flanges Class 600, Orifice Flanges Class 900, Orifice Flanges Class 1500, Orifice Flanges Class 2500.

If we don’t have your flanges in stock, we will make it to order. we are glad to consult on the categories of flanges and different pipe fittings required for your project. Please contact us therefore we are able to start building your custom fittings ASAP.

At BMI, we offer all types of flanges for numerous systems, including high-quality Flanges. Our specialists can help you identify the right flange for your equipment. For more information about our products and services, please Contact for Further Details Call on +91 9152160158 or drop an Email to |

Each ASTM Flanges is otherwise designed based on the characteristics of the applying and additionally the pressure. Consequently, different industries use different flange. We also produce customized industrial astm flanges at our factory as per our client’s requirements. For any types of Industrial Flanges Price List Call on +91 9152160158 or drop an Email to |

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