Material grade: 304 316 Size range: 1/2inch to 72inch The Flange we have 150LBS, 300LBS, JIS-5K, JIS-10K and DIN type. Flange includes SLIP-ON, SCREWED, SOCKET WELDING, WELDING NECK, LAP JOINT AND BLIND type which can demand what you need. Item: •150LB Bling •150LB Welding Neck •150LB Slip-On Material grade: •304 •316 •316L Size range: •1/2”~24”