We can supply main material of pipe flanges include carbon steel flanges, stainless steel flanges, alloy steel flanges. Main standard of forged steel flange which we can produce according to:

ASME / ANSI Flange Standard
ANSI B16.5 / ASME B16.5 - Pipe Flanges NPS 1/2 Through 24 Metric Standard - 2003,
ASME B16.47 A (MSS SP-44) & B (API 605) - Large Diameter Steel Flanges NPS 26 Through NPS 60 Metric Standard - 2006,
ASME B16.48 - Figure-8 Blanks (Spectacle Blind Flange) - 2005,
ASME B16.36 - Orifice Flanges - 1996,
AWWA C207 - Steel Pipe Flange For Waterworks Service - Size 4 in. Through 144 in. (100 mm Through 3,600 mm) - 2001,
API Spec. 6A.
In addition, we also can produce the DIN flange, and the forgings according to the customers drawings, for example, rings and shafts.