Our flange series includes: Screwed flange, slip-on flange (SO),socket welding flange, lap joint flange (LJF);welding neckflange (WNF), blind flanges(BLD)reducing flange, RF, MF. ANSI/ASME B 16.5 standard Welding Neck Flange Size: NPS 1/2/' 24/' Facing: RF;FF; RTJ; Welding Neck Flange Mat: ASTM A105/A105N/ASME AS105 ASTM A350LF2 ASTM A182F304F304L F316 F316L SIZE:1/2/'--48/' SCH 10,SCH40,SCH80 ANY ENQUIY IS APPRECIATED.Please contact us yqsanitaryware@hotmail.com or louisewang0605@yahoo.com.cn