JIS seamless pipe

Tolerance of JIS seamless pipe

JIS seamless pipe is steel pipe that has been created by JIS and meets certain performance requirements. Manufacturers follow Japan Industrial Standards voluntarily.

Table 1: Tolerance on Outside Diameter in JIS G3441, G3444, G3445
APPLICATION TOLERANCE ON OUTSIDE DIAMETER (MM)
JIS G3441
JIS G3444
JIS G3445
=50 ±0.5
>50 ±1%
JIS G3441
JIS G3444
JIS G3445
<50 ±0.25
>50 ±0.5%
JIS G3441
JIS G3445
<25 ±0.12
>25-40 ±0.15
>40-50 ±0.18
>5:.60 ±0.20
>60-70 ±0.23
>70-80 ±0.25
>80-90 ±0.30
>90-100 ±0.40
>100 ±0.5%
JIS G3441 <13 ±0.25
>13-25 ±0.40
>25-40 ±0.60
>40-65 ±0.80
>65-90 ±1.00
>90-140 ±1.20
>140 By agreement
Table 2: Tolerance on Wall Thickness in JIS G3441, G3444, G3445
APPLICATION TOLERANCE ON WALL THICKNESS (MM)
JIS G3441
JIS G3444
JIS G3445
<=4 -0.5,+0.6
>4 -12.5%, +15%
JIS G3441
JIS G3444
JIS G3445
<=3 ±0 .3
>3 ±10%
JIS G3441
JIS G3445
<=2 ±0.15
>2 ±8%
Table 3: Tolerance on Outside Diameter and Wall Thickness in JIS G3454
APPLICATION TOLERANCE ON OUTSIDE DIAMETER TOLERANCE ON WALL THICKNESS
<40A ±0.5mm <=4mm +0.6mm
-0.5%
>50A, <125A ±1%
Hot Rolled
Seamless Pipes
150A ±1.6mm >4mm +15%
-12.5%
>200A ±0.8%
More than 350mm,the
Tolerance is ±0.5%
Cold Drawn
Seamless Pipes
and Electric
Resistant
Welded Pipes
<25A ±0.3mm <=3mm ±0.3mm
>32A ±0.8% >3mm ±10%
But more than 350mm, the
Tolerance is ±0.5%
Table 4: Tolerance on Outside Diameter and Wall Thickness in JIS G3455, G3456, G3458, G3460
APPLICATION TOLERANCE ON OUTSIDE DIAMETER TOLERANCE ON WALL THICKNESS
Hot Rolled
Seamless Pipes
<=50mm ±0.5mm <=4mm ±0.5mm
>50-160mm ±1%
>160-200mm ±1.6mm >4mm ±12.5%
>200mm ±0.8%
More that 350mm, the
Tolerance is ±0.5%
Cold Drawn
Seamless Pipes
and Electric Resistant
Welded Pipes
<=40mm ±0.3mm <=2mm ±0.2mm
>40mm ±0.8% >2mm ±10%
More than 350 mm the
Tolerance is ±0.5%
Table 5: Tolerance on Outside Diameter in JIS G3461, G3462, G3464
O.D. TOLERANCE ON OUTSIDE DIAMETER
HOT ROLLED SEAMLESS PIPES SEAMLESS PIPES THROUGH QUENCH AND NORMALIZED COLD DRAWN SEAMLESS PIPES THRONG, THE HOT TREATMENT EXCEPT QUENCH AND NORMALIZED ELECTRIC WELDED PIPES EXCEPT COLD DRAWN COLD DRAWN ELECTRIC WELDED PIPES
MM
<=25 +0.4
-0.8
±0.25 ±0.10 ±0.15 ±0.10
>25.40 ±0.25 ±0.15 ±0.20 ±0.15
>40-50 ±0.25 ±0.20 ±0.25 ±0.20
>50.60 ±0.25 ±0.25 ±0.30 ±0.25
>60-80 ±0.30 ±0.30 ±0.40 ±0.30
>80.100 ±0.40 ±0.40 -0.60,+0.40 ±0.40
>100-120 +0.4
-1.2
-0.60,+0.40 -0.60,+0.40 -0.80,+0.40 -0.60,+0.40
>120-160 -0.80,+0.40 -0.80,+0.40 -1.00,+0.40 -0.80,+0.40
>160-200 -1.8,+0.4 -1.20,+0.40 -1.20,+0.40 -1.20,+0.40 -1.20,+0.40
>200 -2.4,+0.4 -1.60,+0.40 -1.60,+0.40 -1.60,+0.40 -1.60,+0.40
Table 6: Tolerance on Wall Thickness in JIS G3461, G3462, G3464
WALL
THICKNESS
(MM)
HOT ROLLED SEAMLESS PIPE COLD DRAWN SEAMLESS PIPE ELECTRIC WELDED PIPE
O.D(MM) O.D(MM) O.D(MM)
<=100 >100 <=40 >40 <=40 >40
(%)
<=2 -0,+0.4mm +22
-0
-0,+0.3mm +18
0
>2-2.4 -0,+40 +20
-,0
+18
-0
>2.4-3.8 -0,+35 -0,+35
>3.8-4.6 -0,+23 -0,+33
>4.6 -0,+28 -0,+28
Table 7: Tolerance on the Length in JIS G3461, G3462, G3464
ITEM TOLERANCE AN LENGTH
OD<50mm <7m -0, +7mm
>=7m Every 3m increase in length, the plus tolerance be increased by 3mm with a maximum of 15mm
OD>=50mm <7m -0, +10mm
>=7m Every 3m increase in length, the plus tolerance be increased by 3mm with a maximum of 15mm
OD: Outside Diameter
Table 8: Tolerance on Outside Diameter in JIS G3465
APPLICATION TOLERANCE ON OUTSIDE DIAMETER (MM)
Hot Rolled <=50 ±0.5
>50 ±1%
Cold Drawn <=40 ±0.2
>40 ±0.5%

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