Stainless Steel Flange 1.SIZE: 10-3000mm 2.Grade: 301, 304, 304L, 316, 316L, 321, 310S 3.Standard: ANSI, JIS, DIN, BS, GB, UN 1. SIZE:10-3000mm2. Grade:301, 304, 304L, 316, 316L, 321, 310S etc3. Standard:1>. GB Standard:GB9112-88 (GB9113.1-88, GB9123.36-88)2>. ANSI Standard:ANSI B16.5, ANSI 16.47, Class150, 300, 600, 900, 1500WN, SO, BL, TH, LJ, SW3>. JIS Standard:JIS 5K, 10K, 16K, 20KPL, SO, BL4 ...