Introduction of Stainless Steel Welded Pipe

YC INOX is a world-leading supplier of stainless steel welded pipes. We are one of the top 5 stainless steel welded pipe/tube producer worldwide rated by Austria SMI (Steel Market Intelligence) magazine, renowned for excellent product quality, customer serivce, innovation, and social contribution. We provide industry-leading stainless steel pipes according to international standard of ASTM A312/A312M, which refers to straight-seam welded pipe and welded Austenitic stainless steel pipe for general corrosive environment.

YC INOX supplies commercial stainless steel material grades including TP304, TP304L as well as TP316L. These 3 different grades are classified as 300 series in Austenitic stainless steel category. The most common Austenitic stainless steel is TP304/L, which is extensively used across different industries. As for TP316L grade, it has a higher resistance to acid in comparison to TP304/L because it contains an element called molybdenum. This makes TP316L less likely to undergo pitting or crevice corrosion.

YC INOX CO., LTD is a global leading stainless steel pipe & tube manufacturer.
Our professional manufacturing and engineering teams offer products with excellent and consistent quality to our clients all around world.
Our prompt after-sales services can always be relied on by our customers.
Our punctual delivery time makes stock control easy for our customers.
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.
Bundle packing or steel crate packing is available in accordance with clients' preference.
Optional supplementary requirements are negotiatable.

YC INOX, your best choice of stainless steel.

Specification Table of Chemical Composition Tolerance

ASTM A312/A312M, A358/A358M, A778/A778M, ASME B36.19M/B36.10M

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12.70 12.70 12.70

Nominal Diameter NPS	Outside Diameter(mm)	Nominal Wall Thickness(mm)
		ASME B36.19M				ASME B36.10M
		SCH-5S	SCH-10S	SCH-40S	SCH-80S	SCH-5	SCH-10	SCH-20	STD	XS
1/4	13.70	-	1.65	2.24	3.02	-	1.65	-	2.24	3.02
3/8	17.10	-	1.65	2.31	3.20	-	1.65	-	2.31	3.20
1/2	21.30	1.65	2.11	2.77	3.73	1.65	2.11	-	2.77	3.73
3/4	26.70	1.65	2.11	2.87	3.91	1.65	2.11	-	2.87	3.91
1	33.40	1.65	2.77	3.38	4.55	1.65	2.77	-	3.38	4.55
1 1/4	42.20	1.65	2.77	3.56	4.85	1.65	2.77	-	3.56	4.85
1 1/2	48.30	1.65	2.77	3.68	5.08	1.65	2.77	-	3.68	5.08
2	60.30	1.65	2.77	3.91	5.54	1.65	2.77	-	3.91	5.54
2 1/2	73.00	2.11	3.05	5.16	7.01	2.11	3.05	-	5.16	7.01
3	88.90	2.11	3.05	5.49	7.62	2.11	3.05	-	5.49	7.62
3 1/2	101.60	2.11	3.05	5.74	8.08	2.11	3.05	-	5.74	8.08
4	114.30	2.11	3.05	6.02	8.56	2.11	3.05	-	6.02	8.56
5	141.30	2.77	3.40	6.55	9.53	2.77	3.40	-	6.55	9.53
6	168.30	2.77	3.40	7.11	10.97	2.77	3.40	-	7.11	10.97
8	219.10	2.77	3.76	8.18	12.70	2.77	3.76	6.35	8.18	12.70
10*	273.10	3.40	4.19	9.27	12.70	3.40	4.19	6.35	9.27	12.70
12*	323.90	3.96	4.57	9.53	12.70	3.96	4.57	6.35	9.53	12.70
14	355.60	3.96	4.78	9.53	12.70	3.96	6.35	7.92	9.53	12.70
16	406.40	4.19	4.78	9.53	12.70	4.19	6.35	7.92	9.53	12.70
18	457.00	4.19	4.78	9.53	12.70	4.19	6.35	7.92	9.53	12.70
20	508.00	4.78	5.54	9.53	12.70	4.78	6.35	9.53	9.53	12.70
22	559.00	4.78	5.54	-	-	4.78	6.35	9.53	9.53	12.70
24	610.00	5.54	6.35	9.53	12.70	5.54	6.35	9.53	9.53	12.70
26	660.00	-	-	-	-	-	7.92	12.70	9.53	12.70
28	711.00	-	-	-	-	-	7.92	12.70	9.53	12.70
30	762.00	6.35	7.92	-	-	6.35	7.92	12.70	9.53	12.70
32-84	813.00-2133.60	Thickness：6.35~30mm
Remark		(1)Marking：Within Production Capability (2)Other nominal diameter and wall thickness subject to the approval of vendor and purchaser (3)*：NPS 10 / OD 273mm ; NPS 12 / OD 323.8mm ( For ASTM A358 / A778 )

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. ≦ 1219mm	+ 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

Introduction of Stainless Steel Welded Pipe

ASTM A312/A312M, A358/A358M, A778/A778M, ASME B36.19M/B36.10M

All Stainless Steel Products