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Contact Info

No.194, Pantinwun U Shwe Bin Street, Industrial Zone Part (1) 113, Dagon Myothit (East) Township, Yangon

(95) 9 954218873
(95) 9 954258873
(95) 9 954268873

ffi.sales@ffimm.com

Coupler and Thread

Coupler and Thread Products

Rebar machanical splice (rebar coupler) & thread are used in reinforced concrete structures to replace normal rebar lap joints. Our Coupler System is designed and manufactured to the highest quality requirements and is using the best parallel thread system.

Product Range

  • 16mm
  • 20mm
  • 22mm
  • 25mm
  • 28mm
  • 32mm
  • 40mm

Product Advantage

Safe & Reliable

Safe & Reliable

Simple & Efficient

Simple & Efficient

Widely Applicable

Widely Applicable

Widely Adaptable

Widely Adaptable

Energy-Saving

Energy-Saving

Rebar Mechanical Splice Technology

Our threading product is using the best parallel threading system, with our inhouse professional technical engineering team, together with China Academy of Building Research (CABR), we are able to supply top quality rebar mechanical splice (rebar Coupler) and thread according to globally regconised standards.

Process: System A

  • REBAR CUTTING
  • Rebar End Forging
  • Rebar End Threading
  • Rebar Coupler Connecting

Specifications

Standard Splice

Standard Splice

Suitable for condition where rebar can move and rotate freely, and can be move axially. 

Installation Process
1. Thread two standard rebar thread ends
2. Connect coupler with one rebar thread end
3. Connect coupler with another rebar thread end
4. Screw tightly by wrench. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Couplar Length (mm)/L
Coupler Weight (kg)
16
M18 x 2.0
26.5
32
0.08
18
M22 x 2.5
30
36
0.11
20
M24 x 2.5
33
40
0.15
22
M25 x 2.5
36
44
0.2
25
M29 x 3.0
41
50
0.3
28
M32 x 3.0
45.5
56
0.4
32
M36 x 3.0
51.5
64
0.59
36
M40.3 x 3.5
57.5
72
0.83
40
M45.3 x 3.5
64
80
1.11

SPLICE WITH ONE SLOPE END

Splice With One Slope End

Suitable for condition where rebar is difficult to connect, such as rebar cage connecting. 

Installation Process
1. Thread one standard thread end and one lengthened thread end.
2. Connect coupler with one lengthened thread end rebar.
3. Connect coupler with one standard thread end rebar by reversely rotating the coupler
4. Screw tightly by wrench. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Couplar Length (mm)/L
Coupler Weight (kg)
16
M18 x 2.0
26.5
36
0.09
18
M22 x 2.5
30
41
0.12
20
M24 x 2.5
33
45
0.16
22
M25 x 2.5
36
49
0.22
25
M29 x 3.0
41
56
0.32
28
M32 x 3.0
45.5
62
0.44
32
M36 x 3.0
51.5
70
0.63
36
M40.3 x 3.5
57.5
79
0.88
40
M45.3 x 3.5
64
87
1.18

SPLICE WITH LOCK NUT

Splice With Lock Nut

Suitable for condition where rebar is difficult to rotate but can move axially. Coupler is locked by lock nut. 

Installation Process 
1. Thread one standard thread end and one lengthened thread end
2. Connect coupler with one lengthened thread end rebar, lock nut is on the inner side
3. Connect coupler with one standard thread end rebar by reversely rotating the coupler
4. Screw tightly by wrench. The torque should comply with JGJ107
5. Screw tightly the lock nut with the coupler. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Couplar Length (mm)/L
Coupler Weight (kg)
Nut O.D. (mm)/D
Nut Length (mm)/L
Nut Weight (kg)
16
M18 x 2.0
26.5
36
0.09
26.5
8
0.02
18
M22 x 2.5
30
41
0.12
30
10
0.03
20
M24 x 2.5
33
45
0.16
33
10
0.04
22
M25 x 2.5
36
49
0.22
36
10
0.05
25
M29 x 3.0
41
56
0.32
41
12
0.07
28
M32 x 3.0
45.5
62
0.44
45.5
12
0.09
32
M36 x 3.0
51.5
70
0.64
51.5
12
0.11
36
M40.3 x 3.5
57.5
79
0.9
57.5
14
0.16
40
M45.3 x 3.5
64
87
1.2
64
14
0.19

SPLICE WITH LEFT & RIGHT HAND THREAD

Splice With Left & Right Hand Thread

Suitable for condition where rebar is difficult to rotate but can move axially. 

Installation Process 
1. Thread one left hand thread and one right hand thread end
2. Position the coupler with two rebars together
3. Rotate coupler to connect two rebars together
4. Screw tightly by wrench. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Couplar Length (mm)/L
Coupler Weight (kg)
16
M18 x 2.0
26.5
32
0.08
18
M22 x 2.5
30
36
0.11
20
M24 x 2.5
33
40
0.15
22
M25 x 2.5
36
44
0.2
25
M29 x 3.0
41
50
0.29
28
M32 x 3.0
45.5
56
0.4
32
M36 x 3.0
51.5
64
0.59
36
M40.3 x 3.5
57.5
72
0.83
40
M45.3 x 3.5
64
80
1.11

SPLICE WITH DIFFERENT BAR DIAMETER

Splice With Different Bar Diameter

Suitable for connecting two different diameter rebars. 

Installation Process 
1. Thread two standard thread ends
2. Connect coupler with one standard thread end rebar with larger size
3. Connect coupler with another standard thread end rebar with smaller size
4. Screw tightly by wrench. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm) M1/M2
O.D. (mm)/D
Coupler Length (mm)/L
Coupler Weight (kg)
16/18
M18 x 2.0/ M22 x 2.5
28.9
34
0.1
18/20
M22 x 2.5/ M24 x 2.5
32.5
38
0.14
20/22
M24 x 2.5/ M25 x 2.5
34.5
42
0.17
22/25
M25 x 2.5/ M29 x 3.0
38.7
47
0.25
25/28
M29 x 3.0/ M32 x 3.0
43.5
53
0.35
28/32
M32 x 3.0/ M36 x 3.0
48.5
60
0.49
32/36
M36 x 3.0/ M40.3 x 3.5
58.5
68
0.89
36/40
M40.3 x 3.5/ M45.3 x 3.5
63.5
76
1.11

ADJUSTABLE COUPLER

Adjustable Coupler

Suitable for condition where rebar is difficult to rotate but can move axially, and there’s no space between two rebar ends. 

Installation Process  
1. Thread two standard thread ends
2. Connect lock sleeve with one standard thread end rebar. The torque should comply with JGJ107
3. Connect another standard thread end rebar by reversely rotating the Screw Rod. The torque should comply with JGJ107
4. Screw tightly by wrench. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Total Length (mm)/L
Adjustable Length (mm)
Coupler Weight (kg)
16
M18 x 2.0
32
132 ~ 137
50
0.56
18
M22 x 2.5
35
140 ~ 145
50
0.7
20
M24 x 2.5
39
153 ~ 158
50
0.93
22
M25 x 2.5
43
168 ~ 173
51
1.29
25
M29 x 3.0
48.5
187 ~ 192
51
1.72
28
M32 x 3.0
54
206 ~ 211
52
2.45
32
M36 x 3.0
62
233 ~ 238
53
3.57
36
M40.3 x 3.5
68.5
258 ~ 263
54
4.94
40
M45.3 x 3.5
78.5
281 ~ 286
57
7.02

WELDABLE COUPLER

Weldable Coupler

Suitable for connecting rebars to structural steel sections or plates. 

Installation Process  
1. Thread one standard rebar thread end
2. Weld the coupler on the position of structural steel sections or plates. Welding strength and tolerance should comply with standards
3. Connect rebar by rotating the rebar to the weldable coupler. The torque should comply with JGJ107
4. Screw tightly by wrench. The torque should comply with JGJ107
5. Screw tightly the lock nut with the coupler. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Length (mm)/L
Chamfer Diameter (mm)/R
Coupler Weight (kg)
16
M18 x 2.0
28.5
32
4
0.1
18
M22 x 2.5
32.5
34.5
4.5
0.13
20
M24 x 2.5
36.5
36.5
4.5
0.18
22
M25 x 2.5
38.5
39.5
5.5
0.21
25
M29 x 3.0
43.8
43
6
0.3
28
M32 x 3.0
48.6
47
7
0.4
32
M36 x 3.0
58.5
51.5
7.5
0.68
36
M40.3 x 3.5
63.5
56.5
8.5
0.85
40
M45.3 x 3.5
73.5
61
9
1.28

WELDABLE & ADJUSTABLE COUPLER

Weldable & Adjustable Coupler

Suitable for condition where rebar is difficult to rotate and can move axially, and there is space between rebar end and structural steel sections. 

Installation Process  
1. Thread one standard rebar thread end
2. Weld the coupler on the position of structural steel sections or plates. Welding strength and tolerance should comply with standards
3. Connect another standard thread end rebar by reversely rotating the Screw Rod. The torque should comply with JGJ107
4. Screw tightly the lock nut with the coupler. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Total Length (mm)/L
Adjustable Length (mm)
Coupler Weight (kg)
16
M18 x 2.0
32
189 ~ 194
50
0.82
18
M22 x 2.5
35
204 ~ 209
51
1.07
20
M24 x 2.5
39
214 ~ 219
51
1.41
22
M25 x 2.5
43
242 ~ 247
51
1.94
25
M29 x 3.0
48.5
264 ~ 269
52
2.66
28
M32 x 3.0
54
280 ~ 285
53
3.53
32
M36 x 3.0
62
301 ~ 306
55
5.02
36
M40.3 x 3.5
68.5
339 ~ 344
56
6.95
40
M45.3 x 3.5
78.5
360 ~ 365
59
9.59

Nail Plate

Used for precisely installing coupler to formwork. 
Installation Process – Wooden Formwork
1. Make holes on the formwork to match nail plate installing holes
2. Fix nail plate by nails to the formwork
3. Connect coupler (one side is connected with rebar) to nail plate to the correct position

Installation Process – Steel Formwork
1. Assemble magnets, cover and nail plate together
2. Mark position on the steel formwork
3. Fix nail plate by magnets to the formwork
4. Connect coupler (one side is connected with rebar) to nail plate to the correct position

Rebar Diameter (mm)
Threads (mm)
O.D. (mm)
Space (mm)
Thickness (mm)
O.D. (mm)
Space (mm)
Thickness (mm)
O.D. (mm)
Thickness (mm)
16
M18 x 2.0
59
39
18
59
39
2
6.5
5
18
M22 x 2.5
59
39
18
59
39
2
6.5
5
20
M24 x 2.5
59
39
18
59
39
2
6.5
5
22
M25 x 2.5
59
39
18
59
39
2
6.5
5
25
M29 x 3.0
59
39
18
59
39
2
6.5
5
28
M32 x 3.0
59
39
18
59
39
2
6.5
5
32
M36 x 3.0
59
39
18
59
39
2
6.5
5
36
M40.3 x 3.5
74
54
20
74
54
2
13
5

Rebar Mechanical Splice Technology

Process: System B

  • REBAR CUTTING
  • Rebar End Stripping
  • Rebar End Rolling
  • Rebar Coupler Connecting

Specifications

Standard Coupler

Standard Coupler

Suitable for condition where rebar can rotate freely, and can move axially. 
Installation Process
1. Thread two standard rebar Thread ends
2. Connect coupler with one rebar thread end
3. Connect coupler with antoher rebar thread end
4. Screw tightly by wrech. The torque should comply with JGJ107

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Total Length (mm)/L
Adjustable Length (mn)
Coupler Weight (kg)
16
M18x2.0
26.5
32
0.08
0.08
16
M18x2.0
26.5
32
0.08
0.08
16
M18x2.0
26.5
32
0.08
0.08
16
M18x2.0
26.5
32
0.08
0.08
16
M18x2.0
26.5
32
0.08
0.08
16
M18x2.0
26.5
32
0.08
0.08

Standard Coupler

Suitable for condition where rebar can rotate freely, and can move axially.  

Installation Process
1. Thread two standard rebar Thread ends
2. Connect coupler with one rebar thread end
3. Connect coupler with another rebar thread end
4. Screw tightly by wrench. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Coupler Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Couplar Length (mm)/L
Coupler Weight (kg)
14
M14.55 x 2.0
22.5
36
0.07
16
M16.55 x 2.0
25.5
40
0.10
18
M18.60 x 2.5
28.5
46
0.15
20
M20.60 x 2.5
31.5
50
0.20
22
M2.60 x 2.5
34.5
54
0.25
25
M25.65 x 3.0
39.5
62
0.38
28
M28.65 x 3.0
44.0
68
0.51
32
M32.65 x 3.0
50.5
76
0.75
36
M36.65x 3.0
56.5
84
1.03
40
M40.65 x 3.0
62.5
92
1.37
50
M50.65 x 3.0
78.0
112
2.56

Splice with Left and Right Hand Thread

Splice With Left & Right Hand Thread

Suitable for condition where rebar is difficult to rotate but can move axially. 
Installation Process 
1. Thread one left hand thread and one right hand thread end
2. Position the coupler with two rebars together
3. Rotate coupler to connect two rebars together
4. Screw tightly by wrench. The torque should comply with JGJ107

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Coupler Length (mm)/L
Coupler Weight (kg)
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08

Splice with Left and Right Hand Thread

Suitable for condition where rebar is difficult to rotate but can move axially. 
Installation Process
1. Thread one left hand thread and one right hand thread end
2. Position the coupler with two rebars together.
3. Rotate coupler to connect two rebars together
4. Screw tightly by wrench. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Coupler Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Couplar Length (mm)/L
Coupler Weight (kg)
14
M14.55 x 2.0
22.5
36
0.07
16
M16.55 x 2.0
25.5
40
0.10
18
M18.60 x 2.5
28.5
46
0.15
20
M20.60 x 2.5
31.5
50
0.20
22
M2.60 x 2.5
34.5
54
0.25
25
M25.65 x 3.0
39.5
62
0.39
28
M28.65 x 3.0
44.0
68
0.51
32
M32.65 x 3.0
50.5
76
0.75
36
M36.65x 3.0
56.5
84
1.03
40
M40.65 x 3.0
62.5
92
1.37
50
M50.65 x 3.0
78.0
112
2.56

Splice with Different Bar Diameters

Splice With Different Bar Diameter

Suitable for connecting two different diameter rebars. 
Installation Process 
1. Thread two standard thread ends 
2. Connect coupler with one standard thread end rebar with larger size
3. Connect coupler with another standard thread end rebar with smaller size
4. Screw tightly by wrech. The torque should comply with JGJ107

Rebar Diameter (mm)
Threads (mm)/M
O.D. (mm)/D
Coupler Length (mm)/L
Coupler Weight (kg)
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08
16
M18x2.0
26.5
32
0.08

Splice with Different Bar Diameters

Suitable for connecting two different diameter rebars. 
Installation Process
1. Thread two standard thread ends
2. Connect coupler with one standard thread end of larger size
3. Connect coupler with another standard thread end of smaller size.
4. Screw tightly by wrench. The torque should comply with JGJ107

Coupler Specification – suitable for 500MPa Rebar

Rebar Diameter (mm)
Threads (mm) M1/M2
O.D. (mm)/D
Coupler Length (mm)/L
Coupler Weight (kg)
16/18
M16.55 x 2.0/ M18.60 x 2.5
26.5
43
0.12
18/20
M18.60 x 2.5/ M20.60 x 2.5
30.5
48
0.18
20/22
M20.60 x 2.5/ M22.60 x 2.5
32.5
52
0.21
22/25
M22.60 x 2.5/ M25.65 x 3.0
36.5
58
0.30
25/28
M25.65 x 3.0/ M28.65 x 3.0
40.6
65
0.40
28/32
M28.65 x 3.0/ M32.65 x 3.0
46.5
72
0.59
32/36
M32.65 x 3.0/ M36.65 x 3.0
53.5
80
0.88
36/40
M36.65 x 3.0/ M40.65 x 3.0
58.5
88
1.12

Products Certification

Our products are certified to meet the following global quality standards, with complete quality records from our inhouse quality process control team and third party accredited laboratory.

▶ ISO 15835-1: 2009 (E) 
▶ BS 8110
▶ Other relevant standards (American, German, Chinese and French)