ASME B16. 5 pipe flanges
ASME B16.5 is the standard of high pressure pipe flanges. The most used flange types ASME B16.5 are Welding Neck, Slip On, Socket Weld, Lap Joint, Threaded and Blind flange.
ASME B16. 5 is limited to flanges and flanged fittings made from cast or forged materials, and blind flanges and certain reducing flanges made from cast, forged, or plate materials. Also included in this Standard are requirements and recommendations regarding flange bolting, flange gaskets, and flange joints.
Common materials of low temperature carbon steel forged steel fitings and flange is ASTM A350 LF2/LF3. The pressure rating of socket weld flange contains Class 150, 300, 600, 900, 1500, 2500lb.
There are some types and grades for low temperature carbon steel pipe fittings, pipe and flanges.
- ASTM A350 Forged Fittings and Flanges.
- ASTM A420 Butt Weld Fittings.
- A333 Seamless and Welded Pipes
Common materials of low temperature carbon steel forged steel flange is ASTM A350 LF2/LF3. There are Weld Neck Flange ( WN),Slip-on Flange (SO), Threaded Flange (THD),Socket Weld Flange (SW),Blind Flange (BL),Lap Joint Flange (LAPJ),Plate flange (PL). We also supply alloy steel flanges and stainless steel flanges .
In general, Carbon steel flange, that is, the body material is carbon steel plate or end flange connection. carbon steel pipe fittings and flanges are widely used for applications which do not require materials with higher resistance to corrosion such as stainless steel and alloy steel.
|Forged Steel Flanges Specification|
|Shape||Weld Neck Flange ( WN),Slip-on Flange (SO), Threaded Flange (THD),Socket Weld Flange (SW),Blind Flange (BL),Lap Joint Flange (LAPJ),Plate flange (PL)|
|Size Range||1/2″ – 48″/ DN15 – DN1200|
|Pressure Rating||Class 150, 300, 600, 900, 1500, 2500lb|
|Standard||ASME B16.5, ASME B16.47 Series A/B, EN 1092-1, API 605, MSS SP-44, DIN 2627, DIN 2527, DIN 2558, DIN 2576, DIN 2641, DIN 2655, DIN 2656, DIN2573|
|Carbon Steel||ASTM A105 / A105N, ASTM A350 LF2/LF3, ASTM A694 F42 / 46 / 56 / 60 / 65, P235GH, P265GH, P280GH, P355GH|
|Alloy Steel||ASTM A182 F11 / 12 / 5 / 9 / 91 / 92|
|Stainless Steel||ASTM A182 F304/304L/304H, 316/316L, 321, 310S, 317,347,904L， 1.4404, 1.4437.|
|Duplex Stainless Steel||ASTM A182 F51, F53, F44|
A Socket Weld Fittings is a pipe attachment detail in which a pipe is inserted into a recessed area of a Valve, fitting or flange. Once correctly inserted, fillet type sealing welds are applied to join the pipe to the fitting.
Socket weld flange simplified as SW flange, it has a recessed area (like a shoulder) in the flange bore, this shoulder serves as a guide to set the depth of the pipe that inserted to the flange. Socket welding flange initially designed for high pressure small diameters piping system.
The connection with the pipe is done with 1 fillet weld, at the outside of the flange. But before welding, a space must be created between flange or fitting and pipe.
600# Forged Steel Flange
A flange can be defined as a method that helps in connecting pipes, valves, etc., to form a full piping system. There are six flange classes ranging from #150 to #2500. Governed by B 16.5 standards, the ASME B16. 5 Class 600 Flange provides a pressure capacity of 600Lb.