Home » Forged Steel Flanges » ASTM A182 F304 600LB Slip On Flanges ASME B16.47 Series A & B

ASTM A182 F304 600LB Slip On Flanges ASME B16.47 Series A & B

ASTM A182 F304 600LB slip on flanges are very popular type of flanges because of the excellent functions and high pressure.ASME B16.47 Series A & B are American Standard for large dimension flanges.According to ASME B16.47 Series A& B,the smallest size of flanges is 22 in.

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ASTM A182 F304 is the most used grade of stainless steel.600LB slip on flanges are a popular pressure flanges in many industries.ASME B16.47 series A & B are standards for large dimension flanges according to American Standard.


Slip on flange (also known as SO flange),the inner size of SO flanges is a bit bigger than the pipe,so that these flanges could slip over pipes.They connect to the pipe through a fillet weld at the flange top and bottom.


ASME B16.47 series A & B are both standards for large dimension flanges. The smallest size for Series A  is 22 in,for Series B the smallest size is 26 in.Series A flanges can be used in all complex applications, but Series B flanges are only used in easy applications.



  1. Low cost
  2. Saves space
  3. Reduces weight
  4. No leakage
  5. Good sealing performance



  1. In principle, pipes must always be welded first, and then fittings.
  2. Cannot be combined with elbows and tees
  3. Can not guarantee no leakage.



Shape Slip-on Flange (SO)
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





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