Except for the three Stainless Steel J-Bends listed immediately above, ALL of our bends are made from Mild Steel. Unless mentioned otherwise, all bends are made from 18 gauge material. (No other discounts apply on these items.)ģ04 Stainless Steel - 18 GAUGE WALL THICKNESSĪll of our tubing bends are mandrel bent (wrinkle-free) to insure a consistent inside diameter throughout the bend.