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GRIP-RING PIPE COUPLING
(Grip Type)
GRIP RING- couplings join plain end pipes with axial restraint.
GR-coupling provide pull out resistance in excess of the couplings rated working pressure.

GR-S ※ PIPE O.D specifications are available in all sizes.

※ You can check by swiping the table left or right (swipe).

GR-S
SIZE O/D (mm) Range (mm) M L U W.P W.T P (N·m (kgf·cm))
N.D (Inch) D1 D2 Industrial Ship
15A   (1/2″)   21.3  21.7  22.0 O/D±0.3 M6 57 20 38 40 20 0.18 3~5 (30~50)
20A   (3/4″) 26.9  26.7  27.2   O/D ±0.5 M6 57 20 47 40 20 0.21 4~6 (40~60)
25A      (1″) 33.4  33.7  34.0 O/D ±0.6 M6 57 20 52 40 20 0.23 4~6 (40~60)
32A (1-1/4″) 40.9  42.2  42.4  42.7 O/D ±0.6 M8 57 20 64 40 20 0.34 10~12 (100~120)
40A (1-1/2″)  44.5  48.3  48.6  50.8  O/D ±1.0 M8 57 22 68 40 20 0.36 10~12 (100~120)
50A      (2″) 54.0  57.0  60.3  60.5 O/D ±1.0 M10 80 30 84 36 18 0.80 15~18 (150~180)
65A (2-1/2″) 66.7  69.0  73.0  76.3 O/D ±1.0 M10 80 30 101 36 18 0.89 15~18 (150~180)
80A      (3″) 79.8  84.0 88.9  89.1 O/D ±1.5 M12 108 50 117 32 16 1.56 40~50 (400~500)
90A (3-1/2″) 98.0  101.6 O/D ±1.5 M12 108 50 142 32 16 1.64 40~50 (400~500)
100A     (4″) 104.8 106.3  108.0  114.3 O/D ±1.5 M12 108 50 142 32 16 1.77 40~50 (400~500)
125A     (5″) 129.0  133.0  139.8  141.3 O/D ±1.5 M14 117 55 176 28 12 2.95 60~80 (600~800)
150A     (6″) 154.0  159.0  165.2  168.3 O/D ±1.5 M14 117 55 201 28 12 3.15 60~80 (600~800)
200A    (8″) 204.0  216.3  219.1 O/D ±2.0 M16 155 72 256 24 7 6.60 120~150 (1200~1500)
250A   (10″) 254.0  267.4  273.1 O/D ±2.0 M16 155 65 300 20 7 7.55 120~150 (1200~1500)
300A   (12″) 304.0  318.5  323.9  325.0 O/D ±2.0 M18 155 65 350 14 5 9.75 170~190 (1700~1900)
350A    (14″) 355.6 O/D ±2.0 M18 155 65 400 14 5 10.58 170~190 (1700~1900)
GR-L ※ PIPE O.D specifications are available in all sizes.

※ You can check by swiping the table left or right (swipe).

GR-L
SIZE O/D (mm) Range (mm) M L U W.P W.T P (N·m (kgf·cm))
N.D (Inch) D1 D2 Industrial Ship
15A   (1.2″) 20.0   21.3  21.7  22.0 O/D±0.3 M6 72 40 39 40 20 0.23 3~5 (30~50)
20A   (3/4″) 25.0   26.9  26.7  27.2 O/D ±0.5 M6 72 40 47 40 20 0.26 4~6 (40~60)
25A      (1″) 32.0  33.4  33.7  34.0 O/D ±0.6 M8 100 55 51 40 20 0.46 5~8 (50~80)
32A (1-1/4″) 40.9  42.2  42.4  42.7 O/D ±0.6 M8 100 55 62 40 20 0.53 10~12 (100~120)
40A (1-1/2″)  48.3  48.6  50.0 O/D ±1.0 M8 100 55 66 40 20 0.57 10~12 (100~120)
50A      (2″)  60.3  60.5 . 63 O/D ±1.0 M10 139 84 81 36 18 1.29 15~18 (150~180)
65A (2-1/2″)   73.0  76.3 O/D ±1.0 M10 139 84 100 36 18 1.43 15~18 (150~180)
80A      (3″)   88.9  89.1 O/D ±1.5 M12 203 122 115 32 16 2.83 40~50 (400~500)
100A     (4″)  114.3  118.0 O/D ±1.5 M12 203 122 144 32 16 3.18 40~50 (400~500)
125A     (5″)   139.8  141.3 O/D ±1.5 M14 204 128 175 28 12 4.80 60~80 (600~800)
150A     (6″)  159.0  165.2  168.3 O/D ±1.5 M14 204 128 196 28 12 5.24 60~80 (600~800)
200A    (8″)  216.3  219.1 O/D ±2.0 M16 255 157 260 24 7 10.74 120~150 (1200~1500)
250A   (10″)   267.4  273.1 O/D ±2.0 M16 255 157 300 20 7 12.08 120~150 (1200~1500)
300A   (12″)  318.5  323.9  325.0 O/D ±2.0 M18 255 157 350 14 5 15.60 170~190 (1700~1900)

· N.D : Nominal Diameter (A)

· ℓ : Allowable Shrinkage/Expansion Clearance(m/m)

· D1 : Actual Outer Diameter of Pipe(m/m)

· T : Thickness of the coupling case(m/m)

· D2 : Min./Max. Allowable Limit for Pipe(m/m)

· U : Outer Diameter of Coupling(m/m)

· M : Fastener Bolt Size/Length(m/m)

· W.P : Working Pressure(㎏f·㎠)

· ØA : diameter of lock rod(m/m)

· W/T : Weight Per Unit(㎏)

· L : Coupling Width(m/m)

· W : Gap between pipes when installing

· P : Optimum Locking Torque Value Nm(㎏f·cm)

※ The specifications are subject to change for quality improvement.