Type Wn(welding-neck);so(slip-on);pl(plate);bl(blind);th(threaded);sw(scket-welding);lf/se(lapped flange/stub end);lwn(long welding neck);orifice flange;reducing flange;api flange;integral/compact flange;spectacle blind, lind spade and spacer, paddle blind, paddle spacer;orifice plate;pipe plate, bleed ring. Size Face Rf(raised face);ff(flat face);rtj(ring type joint);tg(tongue and groove face);mff(male and female face) Class rating Class150~2500 Standard Ansi: ansi b16.5, ansi b16.47, ansi b16.48, ansi b16.36, asme b16.5, api 6b, 6bx, iso7005-1, bs4504-3.1, jpi7s-15-93, nfe29-203, api608-81, asmeb16.36;norsok standard l-005;jis: jis b2220; din:din2630, 2631, 2632, 2633, 2634, 2635, 2636, 2637, 2638, 2501(wn); dn2573, 2576, 2527, 2655, 2656(pl);din2566(th) Carbon steel Astm a694 f42, f46, f48, f50, f52, f56, f60, f65, f70; astm a234 wpb, wpc;astm a420 wpl6, wpl3; Astm a105;astm a860 wphy42, wphy52, wphy60, wphy65, wphy70; astm a350 lf1, lf2, lf3; astm a266 gr.1, gr.2, gr.3, gr.4 Stainless steel Astm / asme a/sa 182 f 304, 304l, 304h, 309s, 309h, 310s, 310h, 316, 316ti, 316h, 316l, 316ln, 317, 317l, 321, 321h, Pallect
