ANSI/ASME flanges

Ring joint flanges

Orifice flanges

Long welding necks flanges

ANSI/ASME B16.47 series B
Flanges (API 605)

ANSI/ASME B16.47 series A
Flanges (MSS SP44)

Awwa flanges

ANSI/ASME B16.48 steel lineblanks (API standard 590)

DIN flanges

JIS & KS flanges