Flange Type:
WN/welding neck flange; SO/slip on flange;
PL /Plate flange; BL/Blind flange;
Th/Threaded flange; SW/socket welding flange;
LF/SE(lapped flange/stub end); LWN/long welding neck flange;
Orifice flange; Reducing flange; API flange;
Integral/Compact flange; Spectacle blind,
Line spade and spacer, Paddle blind, Paddle spacer;
Orifice plate; Pipe plate, Bleed ring; Plate flange

Standard:
ANSI B16.5, ANSI B16.47, ANSI B16.48, ANSI B16.36,
JIS B2220,
BS4504, BS1560, BS10;
MSS SP44
DIN2630, DIN2631, DIN2632, DIN2633, DIN2634, DIN2635,
DIN2636, DIN2637, DIN2638, DIN2501(WN); DN2573, DIN2576,
DIN2527, DIN2655, DIN2656(PL); DIN2566(TH)

Material
Carbon steel:
ASTM A234 WPB, WPC;
ASTM A420 WPL6, WPL3;
ASTM A105;
ASTM A860;
ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2;
ASTM A266 GR. 1, GR. 2, GR. 3, GR. 4
API 5L GR. B
Stainless steel:
ASTM A182
F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316,
316Ti, 316L, 317, 317L, 321, 347, 347H, 348, 254SMO,
S31254, UNS 8020, F45, S30815, F46, S30600, F904L
A182 F56, S33228, F58, S31266, F62, N08367,
ASTM A312
Alloy steel:
ASTM A182 F5, F5a, F9, F11, F12, F22, F91;
ASTM A182 F51/UNS S31803, F53/UNS S32750, F55/UNS S32760