Pipe clamp with glue with ISO approval - Jointing Nut: M8 - Thickness: 1.5mm. - Pull Strength: 350kg. - Twist Strength: 7kg. - Φ ≤ 35 Screw is M5x25. - Φ ≥ 40 Screw is M5x35. Heavy Clamp without Glue Type Tightening Range Inch Qty/Box Φ 15 11-15 1/4 100 Φ 18 1 6-18 3/8 100 Φ 22 21-23 1/2 100 Φ 28 26-28 3/4 100 Φ 35 32-36 1 100 Φ 40 40-43 1-1/4 50 Φ 48 48-51 1-1/2 50 Φ 54 52-56 -- 50 Φ 60 57-60 2 50 Φ 63 62-65 -- 25