Precast Concrete; Connection; Fastener;Anchor--Shanghai Jiahu Import & Export Co.,Ltd.

Reinforcing 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.

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

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.

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*3

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.
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*3