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Steel bar Dia(mm) Metric thread pitch OD (mm) Length(mm) Weight(kg) 12 M14*2.0 22 30 0.043 14 M16*2.0 24 34 0.06 16 M20*2.5 26 40 0.078 18 M22*2.5 29 44 0.106 20 M24*3.0 32 48 0.152 22 M27*3.0 36 52 0.21 25 M30*3.5 40 60 0.295 28 M33*3.5 44 66 0.39 32 M36*4.0 50 72 0.585 36 M39*4.0 56 80 0.865 40 M45*4.0 62 90 1.09 Steel Bar Dia (mm) 16 18 20 22 25 28 32 36 40 Adapter sleeve outside Dia 24 27 30 32.5 39 41 46.5 53 58 Adapter sleeve length 45 50 55 60 65 70 75 85 90 Screw thread specs M16.5*2.5 M18.5*2.5 M22.5*2.5 M22.5*2.5 M25.7*3 M28.7*3 M32.7*3 M36.7*3 M40.7*3Reinforcing Bar coupler Lapped joints are not always an appropriate means of connecting rebar. The use of Reinforcing Bar Couplers can simplify the design and construction of reinforced concrete and reduce the amount of reinforcement required. The strength of a mechanical splice is independent of the concrete which it is located and will retain its strength despite loss of cover as a result of impact damage or seismic event. Approximate dimensions for upsetting system: The system utilizes internally threaded couplers with simple threaded and is suitable for applications where the continuation bar can be rotated. 
Parameters of rolling splice: Steel bar rolling stamp straight screw head connection. With professional rolling stamp lathe to roll the end of steel bars, the straight screw is formed at one time. 
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