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By certification 
Name: Carbon Steel SW Flange.
Type: Socket Weld Flange.
Material: Carbon Steel, ASTM A516.
Grade: CL1, CL2.
Face: RF.
Standard: MSS SP-44.
Pressure: PN150 (Class 900LB).
Size: 1/2-56 Inch (DN15-DN1400).
Type: Socket Weld Flange.
Material: Carbon Steel, ASTM A516.
Grade: CL1, CL2.
Face: RF.
Standard: MSS SP-44.
Pressure: PN150 (Class 900LB).
Size: 1/2-56 Inch (DN15-DN1400).
