Iso 40 flange dimensions

Note in the case of AS PN is the rating designator followed by a designation number indicating the approximate pressure rating in bars. PN ratings do not provide a proportional relationship between different PN numbers, whereas class numbers do.

AS originates from BS10 and has been metricated. In some cases slightly larger bolt holes provide better clearance as metric bolts are specified in lieu of UNC bolts used by BS As the new pressure ratings are slightly higher the flange thicknesses have slightly increased.

Also the raised face dimensions although rarely specified, flat face is mostly used are slightly larger. AS covers PN2. Refer the Global Supply Line online slide rule above for differences.

Although the standards say they are identical, there are some very minor flange thickness differences between ISO AS and EN API6A flanging is used in Australia in oil drilling and wellhead systems.

API ratings range from 2, to 20, psi cold working pressure. Click here to find out more. Class is also traditionally abbreviated CL or LB verbally spoken as pound or cross hash but not psi as this can be misconstrued as the cold working pressure CWP. Consequently in some sizes flanges are thicker to bring the rating up to the required PN rating. A Class flange is rated to a higher pressure than a Class flange, because a Class flange is constructed with more metal and therefore can withstand more pressure.

However there are a number of factors that can impact the pressure capability of a flange. Different names are used to indicate a Pressure Class. For example: Lb or Lbs or or Class , all mean the same. Commonly, the type of material used in the manufacturing process of the flange pn16 uni will govern the mechanical properties of the flange. For instance, a Carbon Steel PN16 Flange will be used in those applications where corrosion resistance is not really required though the application has low temperature exposure requirements.

Similar to carbon based steel grades, the properties of Stainless Steel PN16 Flange will be defined by the alloy grade chosen by the client. For instance if he wants a cost efficient alternative then austenitic grade stainless steel is considered to be an apt choice. However, if the client requires the stainless Alloy Steel Pn16 Blind Flanges to have good mechanical properties along with higher resistance to corrosion in comparison to stainless steel grade , then we can manufacture the Pn16 Weld Neck Flanges in alloy grade We are one of the largest manufacturers and suppliers of the MS Flanges Pn Click here to learn more about the pn flange table.

A, Ground Floor, P. Pn16 Blind Flange Dimensions. Pn Flange Dimensions. Pn16 Slip On Flange Dimensions. Pn 25 Welding Neck Flange. Pn10 Loose Flange. Pn40 Threaded Flange.