Unit=mm ＫＣF Products Measuring Point Nominal size 1/8"〜3/8" 8A〜10A 1/2"〜3/4" 15A〜65A 1"〜3" 80A〜200A 4"〜6" 250A〜300A Pipe Fittings Headers Joint-headers Mul-Tees Outside diameter at end (OD) ±0.1mm ±1% Wall thickness at end (T)  Either bigger±0.2mm or ±10% Manual weld type：±20% Straight end length (l) + Not specified - 0.4mm Thinning length (J) + Not specified - 0 Elbow D-elbows  Minimum thickness other than end -35%   Over tube Inside diameter at end (ID)  ±0.2mm  -  Elbows Tees J-Tees Headers J-headers Mul-tees Center to end （A,B,C,M) ±0.8mm ±1.6mm ±2.4mm D-elbows D-Tees Center to end （A,B,C,M) ±1.6mm ±1.6mm ±2.4mm Clean laps Pipe flanges Length (FF,FP) ±0.8mm ±1.6mm ±2.4mm Caps 180°Return bends Back to end (E,BH) ±0.8mm ±3.2mm Reducers Cap-reducers J-reducers J-caps Outside-diameter-changeable fittings Wall-thickness-changeable fittings Over tube Over all length (H,Q,L) ±0.8mm ±1.6mm ±2.4mm D-Reducer Over all length (H,Q,L) ±1.6mm ±1.6mm ±2.4mm Clean laps Thickness of lap (t) - 10A + 1.6mm - 0mm Diameter of lap (G) - 10A + 0mm - 0.8mm + 0mm - 1.6mm Headers J-Headers Mul-tees Length of end (EL) ±1.6mm Branch pitch (P) ±1.6mm ±2.4mm Total length (L) ±2.5mm Helium leakage test value （Application for welded products） Measuring instrument ： Ulvac HELIOT700 Detection sensitivity ： 1.0×10-8Pa・m3/sec Pressure・airtightness test value （Application for welded products/According to your requirement) �@ pressure test value ： 1.5MPa(15kg/�p2) �A Airtightness test value ： 1.1MPa(11kg/�p2) Pressure test under higher pressure available at your option.