We are offering spectacle blind flanges.15nb to 1500nb in 3000, 6000, 9000lbs available with nacemr 01-75. stainless & duplex steel , nickel alloys, alloy & carbon steel range : ½” (15 nb) to 60” (1500nb) in 150 lbs, 300 lbs, 600 lbs, 900 lbs, 1500 lbs, 2500 lbs asa 150, asa 300, pn 6, 10, 16, 25, 40, 64, 100, 160 etc. Available with nace mr 01-75 form: spectacle blind flange spacer blind ring spacer customised standard : astm bs din is materials nickel alloy standard : astm / asme sb 564 / 160 / 472. Uns 10276-hastelloy c 276 uns 2200 -nickel 200 uns 2201 -nickel 201 uns 4400-monel 400 uns 8020-alloy 20 uns 8825 -inconel 825 uns 6600-inconel 600 uns 6601 -inconel 601 uns 6625 -inconel 625 copper alloy astm / asme sb 61 / 62 / 151 / 152. C 70600 (cu -ni- 90/10) c 71500 (cu -ni- 70/30) uns no. C 92200, uns no. C 83600, uns no. Uns no c 10100, c 10200, c 10300, c 10800, c 12000, c 12200 duplex steel astm / asme a/sa 182 uns f 44, f 45, f51, f 53, f 55, f 60, f 61. Stainless steel astm a182 grade : f 304, 304l, 304h, 309s, 309h, 310s, 310h, 316, 316ti, 316h, 316l, 316ln, 317, 317l, 321, 321h, 347, 347h, 904l. Alloy steel astm sa 182 f1/f5/f9/f11/f22/f91 carbon steel astma 105 gr. F42/46/52/56/60/65/70 low temperature carbon steel a350 lf2/a350 lf3