Pipes

JIS G3459, CNS 6331

Material: 304, 304L, 316L
Specification

Introduction of Stainless Steel Welded Pipe

 

JIS G3459 and CNS6331 Stainless Steel Pipes Standard specifies Stainless Steel Pipes used for piping for corrosion resistance, low temperature service, elevated temperature service, fire-fighting services etc.

These pipes are widely used in various application industry like oil & gas, paper, breweries, cement, sugar, oil mills, mining, shipbuilding, steel plants, and etc.

 JIS G3459 pipes have outside diameters mainly within the range between 13.8 mm (nominal diameter 8A or 1/4B) and 660.4 mm (nominal diameter 650A or 26B).
 The pipes of JIS G3459 are available with grade in SUS304TP, 304LTP, SUS316TP, 316LTP, whereas the pipes of CNS 6331 are available with grades in 304/A304L, 316/A316L.
All pipes are available in different sizes and thicknesses. Please refer to our catalog for more information.

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We offer product with tolerance complies with the norm (Specific tolerance requirement is possible. Please contact our sales specialists).
Specific mechanical tests are negotiable between seller and buyer.
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JIS G3459, CNS 6331

 
Nominal Diameter Outside Diameter (mm) Nominal Wall Thickness (mm)
JIS G3459 , CNS 6331 JIS G3468 , CNS 13517

Other Common Thickness

A B SCH 5S SCH 10S SCH 20S SCH 40 SCH 5S SCH 10S SCH 20S SCH 40
8 1/4 13.8 1.2 1.65 2.0 2.2 - - - - -
10 3/8 17.3 1.2 1.65 2.0 2.3 - - - - 1.5/2.5
- - 20.4* - - - - - - - - 2.0/2.5
15 1/2 21.7 1.65 2.1 2.5 2.8 - - - - 2.0/3.0/3.2
- - 26.4* - - - - - - - - 2.0/2.5
20 3/4 27.2 1.65 2.1 2.5 2.9 - - - - 2.0/2.8/3.0/3.2
- - 33.4* - - - - - - - - 2.0/2.5/3.0
25 1 34.0 1.65 2.8 3.0 3.4 - - - - 2.0/2.5/3.5/4.0
32 1 1/4 42.7 1.65 2.8 3.0 3.6 - - - - 2.0/2.5/3.5/4.0/4.5/5.0
40 1 1/2 48.6 1.65 2.8 3.0 3.7 - - - - 1.5/2.0/2.5/3.5/4.0/4.5/5.0
50 2 60.5 1.65 2.8 3.5 3.9 - - - - 2.0/2.5/3.0/4.0/4.5/5.0
65 2 1/2 76.3 2.1 3.0 3.5 5.2 - - - - 2.0/2.5/4.0/5.0/5.5
80 3 89.1 2.1 3.0 4.0 5.5 - - - - 2.0/2.5/3.5/4.5/5.0/6.0
90 3 1/2 101.6 2.1 3.0 4.0 5.7 - - - - 2.0/2.5/3.5/5.0/6.0
100 4 114.3 2.1 3.0 4.0 6.0 - - - - 2.0/2.5/3.5/4.5/5.0/6.5
125 5 139.8 2.8 3.4 5.0 6.6 - - - - 2.5/3.0/3.5/4.0/5.5/6.0/6.5
150 6 165.2 2.8 3.4 5.0 7.1 2.8 3.4 5.0 7.1 3.0/3.5/4.0/5.5/6.0/6.5/7.0
200 8 216.3 2.8 4.0 6.5 8.2 2.8 4.0 6.5 8.2 3.0/3.5/4.5/5.0/6.0/7.0
250 10 267.4 3.4 4.0 6.5 9.3 3.4 4.0 6.5 9.3 3.0/3.5/4.5/6.0/7.0
300 12 318.5 4.0 4.5 6.5 10.3 4.0 4.5 6.5 10.3 3.0/3.5/5.0/6.0/7.0
350 14 355.6 - - - 11.1 4.0 5.0 8.0 11.1 6.0
400 16 406.4 - - - 12.7 4.5 5.0 8.0 12.7 4.0/6.0
450 18 457.2 - - - 14.3 4.5 5.0 8.0 14.3 -
500 20 508.0 - - - 15.1 5.0 5.5 9.5 15.1 -
550 22 558.8 - - - 15.9 5.0 5.5 9.5 15.9 -
600 24 609.6 - - - 17.5 5.5 6.5 9.5 17.5 -
650 26 660.4 - - - 18.9 5.5 8.0 12.7 - -
700 28 711.2 - - - - 5.5 8.0 12.7 - -
750 30 762.0 - - - - 6.5 8.0 12.7 - -
800 32 812.8 - - - - - 8.0 12.7 - -
850 34 863.6 - - - - - 8.0 12.7 - -
900 36 914.4 - - - - - 8.0 12.7 - -
1000 40 1016.0 - - - - - 9.5 14.3 - -
Remark

(1)Other nominal diameter and wall thickness subject to the approval of vendor and purchaser with MOQ requirement.

(2)Materials according to ASTM A240.

 

Standard & Grade

Chemical Composition(%)
C Si Mn P S Ni Cr Mo

CNS

6331

304TP ≦ 0.080 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 8.0~11.0 18.0~20.0  
304L1TP ≦ 0.035 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 8.0~13.0 18.0~20.0  
304L2TP ≦ 0.030 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 9.0~13.0 18.0~20.0  
316TP ≦ 0.080 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 10.0~14.0 16.0~18.0 2.0~3.0
316L1TP ≦ 0.035 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 10.0~14.0 16.0~18.0 2.0~3.0
316L2TP ≦ 0.030 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 12.0~16.0 16.0~18.0 2.0~3.0

ASTM

A213

A312

TP304 ≦ 0.080 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 8.0~11.0 18.0~20.0  
TP304L ≦ 0.035 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 8.0~13.0A 18.0~20.0  
TP316 ≦ 0.080 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 10.0~14.0 16.0~18.0 2.0~3.0
TP316L ≦ 0.035 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 10.0~14.0 16.0~18.0 2.0~3.0

JIS

G3459

SUS304TP ≦ 0.080 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 8.0~11.0 18.0~20.0  
SUS304LTP ≦ 0.030 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 9.0~13.0 18.0~20.0  
SUS316TP ≦ 0.080 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 10.0~14.0 16.0~18.0 2.0~3.0
SUS316LTP ≦ 0.030 ≦ 1.00 ≦ 2.00 ≦ 0.045 ≦ 0.030 12.0~16.0 16.0~18.0 2.0~3.0

Remark

A ASTM A213 grade TP304L shall have an Ni content of not less than 8.00% and not more than 12.00%.

 
  Item
Standard Outside Diameter Thickness Length
ASTM A312
  O.D. ≦   48.26mm + 0.40mm ‧ -0.80mm
48.26mm < O.D. ≦   114.3mm ± 0.80mm  
114.3mm < O.D. ≦ 219.08mm + 1.60mm ‧ -0.80mm
219.08mm < O.D. ≦   457.2mm + 2.40mm ‧ -0.80mm
457.2mm < O.D. ≦   660.4mm + 3.20mm ‧ -0.80mm
660.4mm < O.D. ≦   863.6mm + 4.00mm ‧ -0.80mm
863.6mm < O.D. ≦ 1219.2mm + 4.80mm ‧ -0.80mm

Nominal Thickness

+ 15%

-12.5%

L ≦ 7.3m + 6.0mm
  -     0mm
ASTM A358

Based on circumferential measurement ± 0.5%

Difference between major and minor outside diameters  1%  

-0.3mm
L ≦ 7.3m + 6.0mm
  -     0mm

CNS 6331

JIS G3459

O.D. < 30.0mm ± 0.30mm

O.D. ≧ 30.0mm ± 1%        

< 2mm ± 0.20mm

≧ 2mm ±     10%

Definite Cut Lengths

CNS 13517

JIS G3468

O.D. ≦ 318.5mm (300A) ±   1%

O.D. > 318.5mm (300A) ± 0.5%

< 8mm +   15%
- 12.5%
≧ 8mm +   15%
-   10%

Definite Cut Lengths

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