Stainless Steel Investment Casting Clamps 201,304,316 L material at high temperature casting pipes used in quick card, related to the food industry, beer, beverage, cosmetics and bio-engineering pharmaceutical and other industries processing field. The product is easy to use, easy to install one of the primary product pipeline installation. Nominal size (inch) pipe size (pipe diameter) clamp fastening size (chuck outside diameter) 1/2 "￠ 10 25.4 3/4" ￠ 19 34 1.5 "￠ 38 50.5 2 ￠ 51 64 2.5 ￠ 63 77.5 3 "￠ 76 91 3.5" ￠ 89 106 4 "￠ 102 119 4" ￠ 108 119 4.5 "￠ 114 130 5" ￠ 125 145 5.5 "￠ 133 155 6" ￠ 154 166.7 6.5 "￠ 159 183 7" ￠ 168 191 8 "￠ 202 217.7 8.5" ￠ 219 235 10 "￠ 254 268.5 11" ￠ 279 305 12 "￠ 305 319