Environment, Safety, and Health Policy

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.

JIS G3459 is applicable to pipes with an outside diameter mainly in the range between 13.8mm (nominal diameter 8A or 1/4B) and 660.4mm (nominal diameter 650A or 26B).

The pipe of JIS G3459 is available with grade in SUS304TP, 304LTP, SUS316TP, 316LTP and the pipes of CNS 6331 is available with grades in 304/A304L, 316/A316L. All pipes are available in different size and thickness as our size range in catalog based on customers'requirements.

These pipes are widely used in various application industry like Oil & Gas, Paper, breweries, Cement, Sugar, Oil Mills, Mining, Shipbuilding, Steel Plant etc.

YC INOX CO., LTD is a well-known leading stainless steel pipe & tube manufacturer.

Our professional manufacturing and engineering team offer products with excellent and consistent quality to our worldwide clients.
Our prompt after-sales service is always customers' best backup.
Our punctual delivery time makes our customers control stock better.
We offer product with tolerance complies with the norm; specific tolerance requirement is discussable.
Specific mechanical tests are negotiable between seller and buyer.
Bundle packing or steel crate packing is available in accordance with clients' preference.

Specification Table of Chemical Composition Tolerance

JIS G3459, CNS 6331

Print Online Guide

Nominal Diameter		Outside Diameter (mm)	Nominal Wall Thickness (mm)
Nominal Diameter			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	Other Common Thickness
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(%)
Standard & Grade		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	8.0~13.0^A	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

Stainless Steel Pipes

Pipes

JIS G3459, CNS 6331

All Stainless Steel Products