SS 904L Seamless Tubes Manufacturer and Supplier in Thailand

Stainless Steel 904L Seamless Tubes is a high-performance tube designed to handle corrosive and high-pressure environments. Known for their excellent corrosion resistance, strength, and durability, they are ideal for use in harsh piping systems. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., a trusted stainless steel seamless tube supplier with years of manufacturing experience, produces premium 904L seamless tubes in Chon Buri, Thailand. Our tubes are manufactured as per international standards like ASTM B677 and undergo strict quality tests to ensure reliability. We offer a wide range of sizes at competitive prices, with each product certified for top quality and consistent performance.

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Product Description: Stainless Steel 904L Seamless Tubes

Stainless Steel 904L Seamless Tubes is a high-alloy austenitic stainless steel with excellent weldability. With a strong composition of chromium, nickel and molybdenum, the tubes offer superior protection against rust, pitting and chemical attacks, making them suitable for high-temperature and pressure applications. Alloy 904L Tubing is available in a wide range of size variations from ½ inch to 3 inches and lengths from 0.25 meters to 1.00 meters. These tubes are manufactured as per ASTM B677 TP 904L standards and supplied with IBR test certification to ensure quality and safety in critical systems. These tubes are widely used for chemical plants, oil & gas, marine engineering and pharmaceutical industries.

Key Benefits Of Stainless Steel 904L Seamless Tubes

Key Benefits of Stainless Steel 904L Seamless Tubes include superior corrosion resistance, excellent strength, and long-lasting performance in harsh environments, as given below.

Resists rust, acids and harsh chemicals, ideal for use in chemical plants and marine environments.

These tubes withstand high pressure and temperature, ensuring a longer service life with minimal maintenance.

Smooth finish and clean appearance make it suitable for exposed piping and architectural use.

These seamless tubes offer excellent metal purity, reducing contamination risks in sensitive processes like pharmaceuticals and food.

The composition of the tubes maintains integrity even in corrosive and high-stress environments.

Why Choose Our Stainless Steel 904L Seamless Tubes?

Our stainless steel 904L seamless tubes are trusted for their quality and long life. We offer custom sizes to match your exact needs, fast replacement options and competitive price without compromising on quality. Our Stainless steel tubes are used across various industries ensuring durable performance.

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UNS N08904 904L Seamless Tubing Specifications

This table covers the size range, outer diameter, thickness, lengths, schedule and surface finish.

Specification	ASTM B677/ ASME SB677
Standard	ASTM, ASME and API
Size	1 / 8" NB - 24" NB
Types	Seamless - Hot Rolled / Cold Drawn
Length	Single Random, Double Random & Required Length
Outer Diameter	6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB
Thickness	0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Schedule	SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Types	Seamless / Cold Drawn / Hot Finish / Cold Finish
Form	Round Tubing, Square Tubing, Rectangular Tubing, Coiled Tubing, “U” Shape, Pan Cake Coils, Hydraulic Tubing
End	Plain End, Beveled End, Treaded

904L Seamless Seamless Tubes Chemical Composition

The precise chemical composition of 904L, including essential elements like chromium, nickel, molybdenum and copper.

Grade	C	Mn	P	S	Si	Cr	Ni	Mo	Cu	Fe
UNS N08904	≤0.02	≤2.00	≤0.04	≤0.03	≤1.00	19.00-23.00	23.00-28.00	4.00-5.00	1.20-2.00	Balance ≥ 39.50

ASTM B677 TP 904L Seamless Tubes Mechanical Properties

This table outlines the mechanical properties of 904L tubing, including tensile strength, yield strength, elongation and hardness.

Element	Grade 904L
Density	8
Melting Range	1300 -1390 ℃
Tensile Stress	490
Yield Stress (0.2%Offset)	220
Elongation	35% minimum
Hardness (Brinell)	-

Stainless Steel 904L Seamless Tubes Equivalent Grades

The international equivalent grades and standards for stainless steel 904L seamless tubes given below

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	KS	AFNOR	EN
SS 904L	1.4539	N08904	SUS 890L	904S13	STS 317J5L	Z2 NCDU 25-20	X1NiCrMoCu25-20-5

Stainless Steel 904L Seamless Tubes Dimensions

This chart provides detailed tube dimensions, including outer diameter, wall thickness and standard sizes.

Nominal Pipes Size		Outside Diameter (mm)	Nominal Wall Thickness Schedule
NPS	DN	OD	SCH5s	SCHl0s	SCH 10	SCH 20	SCH 30	SCH40s	SCH STD	SCH 40	SCH 60	SCH80s	SCH XS	SCH 80	SCH 100	SCH 120	SCH 140	SCH 160	SCH XXS
1/8	6	10.3		1.24				1.73	1.73	1.73		2.41	2.41	2.41
1/4	8	13.7		1.65				2.24	2.24	2.24		3.02	3.02	3.02
3/8	10	17.1		1.65				2.31	2,31	2.31		3.20	3.20	3.20
1/2	15	21.3	1.65	2.11				2.77	2.77	2.77		3.73	3.73	3.73				4.78	7.47
3/4	20	26.7	1.65	2.11				2.87	2.87	2.87		3.91	3.91	3.91				5.56	7.82
1	25	33.4	1.65	2.77				3.38	3.38	3.38		4.55	4.55	4.55				6.35	9.09
1 1/4	32	42.2	1.65	2.77				3.56	3.56	3,56		4.85	4.85	4.85				6.35	9.70
1 1/2	40	48.3	1.65	2.77				3.68	3.68	3.68		5.08	5.08	5.08				7.14	10.15
2	50	60.3	1.65	2.77				3.91	3.91	3.91		5.54	5.54	5.54				8.74	11.07
2 1/2	65	73	2.11	3.05				5.16	5.16	5.16		7.01	7.01	7.01				9.53	14.02
3	80	88.9	2.11	3.05				5.49	5.49	5.49		7.62	7.62	7.62				11.13	15.24
3 1/2	90	101.6	2.11	3.05				5.74	5.74	5.74		8.08	8.08	8.08
4	100	114.3	2.11	3.05				6.02	6.02	6.02		8.56	8.56	8.56		11.13		13.49	17.12
5	125	141.3	2.77	3.40				6.55	6.55	6.55		9.53	9,53	9.53		12.70		15.88	19.05
6	150	168.3	2.77	3.40				7.11	7.11	7.11		10.97	10.97	10.97		14.27		18.26	21.95
8	200	219.1	2.77	3.76		6.35	7.04	8.18	8.18	8.18	10.31	12.70	12.70	12.70	15.09	18.26	20.62	23.01	22.23
10	250	273.1	3.40	4.19		6.35	7.80	9.27	9.27	9.27	12.70	12.70	12.70	15.09	18.26	21.44	25.40	28.58	25.40
12	300	323.9	3.96	4.57		6.35	8.38	9.53	9.53	10.31	14.27	12.70	12.70	17.48	21.44	25.40	28.58	33.32	25.40
14	350	355.6	3.96	4.78	6.35	7.92	9.53		9.53	11.13	15.09		12.70	19.05	23.83	27.79	31.75	35.71
16	400	406.4	4.19	4.78	6.35	7.92	9.53		9.53	12.70	i6.66		12.70	21.44	26.19	30.96	36.53	40.49
18	450	457.2	4.19	4.78	6.35	7.92	11.13		9.53	14.27	19.05		12.70	23.83	29.36	34.93	39,67	45.24
20	500	508	4.78	5.54	6.35	9.53	12.70		9.53	15.09	20.62		12.70	26.19	32.54	38.10	44.45	50.01
22		559	4.78	5.54	6.35	9.53	12.70		9.53		22.23		12.70	28.58	34.93	41.28	47.63	53.98
24	600	610	5.54	6.35	6.35	9.53	14.27		9.53	17.48	24.61		12.70	30.96	38.89	46.02	52.37	59.54
26		660			7.92	12.70			9.53				12.70
28	700	711			7.92	12.70	15.88		9.53				12.70
30		762	6.35	7.92	7.92	12.70	15.88		9.53				12.70
32	800	813			7.92	12.70	15.88		9.53	17.48			12.70
34		884			7.92	12.70	15.88		9.53	17.48			12.70
36	900	914			7.92	12.70	15.88		9.53	19.05			12.70
38		965							9.53				12.70
40	1000	1016						9.53		12.70
42		1067				12.70	15.88		9.53	19.05			12.70
44	1100	1118							9.53				12.70
46		1168							9.53				12.70
48	1200	1219							9.53			12.70
52		1321
56	1422
60	1524

904L Stainless Stee Seamless Tubes Size Chart

The size chart includes available outer diameters, wall thicknesses and standard length options for 904L tubes.

ASTM B677 SS 904L Pipes OD mm	Pipe WT mm	in.	Sch	Kg/m
13.72	1.65	1/4	10S	0.50
13.72	2.24	1/4	40S	0.64
13.72	3.02	1/4	80S	0.81
17.15	1.65	3/8	10S	0.64
17.15	2.31	3/8	40S	0.86
17.15	3.20	3/8	80S	1.12
21.34	2.11	1/2	10S	1.02
21.34	2.77	1/2	40S	1.29
21.34	3.73	1/2	80S	1.65
26.67	2.11	3/4	10S	1.30
26.67	2.87	3/4	40S	1.71
26.67	3.91	3/4	80S	2.23
33.40	2.77	1	10S	2.13
33.40	3.38	1	40S	2.54
33.40	4.55	1	80S	3.29
33.40	6.352)	1	160	4.30
42.16	2.77	1¼	10S	2.73
42.16	3.56	1¼	40S	3.44
42.16	4.85	1¼	80S	4.53
42.16	6.352)	1¼	160	5.69
48.26	2.77	1½	10S	3.16
48.26	3.68	1½	40S	4.11
48.26	5.08	1½	80S	5.49
60.33	2.77	2	10S	3.99
60.33	3.91	2	40S	5.52
60.33	5.54	2	80S	7.60
60.33	8.742)	2	160	11.29
73.03	3.05	2½	10S	5.35
73.03	5.16	2½	40S	8.77
73.03	7.01	2½	80S	11.59
88.90	3.05	3	10S	6.56
88.90	5.49	3	40S	11.47
88.90	7.62	3	80S	15.51
88.90	11.132)	3	160	21.67
101.60	3.05	3½	10S	7.53
101.60	5.74	3½	40S	13.78
101.60	8.08	3½	80S	18.92
114.30	3.05	4	10S	8.50
114.30	6.02	4	40S	16.32
114.30	8.56	4	80S	22.67
114.30	13.492)	4	160	34.05
141.30	6.55	5	40S	22.10
141.30	9.53	5	80S	31.44
141.30	15.882)	5	160	49.87
168.28	3.4	6	10S	14.04
168.28	7.11	6	40S	28.69
168.28	10.97	6	80S	43.21
168.28	14.27	6	120	54.75
168.28	18.262)	6	160	68.59
219.08	8.18	8	40S	43.20
219.08	12.7	8	80S	65.63
219.08	18.23	8	120	91.30
219.08	23.012)	8	160	112.97

Stainless Steel 904L Seamless Tubes Weight Chart

This table lists the weight per meter based on different diameters and wall thicknesses of 904L seamless tubes.

NPS (DN)	WEIGHT LB/FT (KG/M)	SCH	Outside Diameter IN (Millimeter)	ID	WT IN (Millimeter)
32 (800)	84.085 (126.032)	.0.0.0	32.00 (813)	.0.0.0	0.025 (6.035)
32 (800)	95.028 (141.09)	.0.0.0	32.00 (813)	.0.0.0	0.0281 (7.014)
32 (800)	105.069 (157.025)	10	32.00 (813)	.0.0.0	0.0312 (7.092)
32 (800)	116.041 (173.035)	.0.0.0	32.00 (813)	.0.0.0	0.0344 (8.074)
32 (800)	126.078 (188.083)	.0.0.0	32.00 (813)	STD	0.0375 (9.053)
32 (800)	137.012 (204.009)	.0.0.0	32.00 (813)	.0.0.0	0.0406 (10.031)
32 (800)	147.078 (220.01)	.0.0.0	32.00 (813)	.0.0.0	0.0438 (11.013)
32 (800)	158.008 (235.029)	.0.0.0	32.00 (813)	.0.0.0	0.0469 (11.091)
32 (800)	168.037 (250.065)	20	32.00 (813)	XS	0.05 (12.07)
32 (800)	188.087 (281.009)	.0.0.0	32.00 (813)	.0.0.0	0.0562 (14.027)
32 (800)	209.062 (312.017)	30	32.00 (813)	.0.0.0	0.0625 (15.088)
32 (800)	230.029 (342.094)	40	32.00 (813)	.0.0.0	0.0688 (17.048)
32 (800)	250.055 (373.00)	.0.0.0	32.00 (813)	.0.0.0	0.075 (19.005)
32 (800)	270.072 (402.094)	.0.0.0	32.00 (813)	.0.0.0	0.0812 (20.062)
32 (800)	291.014 (433.052)	.0.0.0	32.00 (813)	.0.0.0	0.0875 (22.023)
32 (800)	311.047 (463.078)	.0.0.0	32.00 (813)	.0.0.0	0.0938 (23.083)
32 (800)	331.039 (493.035)	.0.0.0	32.00 (813)	.0.0.0	1.00 (25.04)
32 (800)	351.023 (522.08)	.0.0.0	32.00 (813)	.0.0.0	1.0062 (26.097)
32 (800)	371.031 (552.088)	.0.0.0	32.00 (813)	.0.0.0	1.0125 (28.058)
32 (800)	391.03 (582.064)	.0.0.0	32.00 (813)	.0.0.0	1.0188 (30.018)
32 (800)	410.09 (611.072)	.0.0.0	32.00 (813)	.0.0.0	1.025 (31.075)
34 (850)	90.02 (134.031)	.0.0.0	34.00 (864)	.0.0.0	0.025 (6.035)
34 (850)	101.029 (150.088)	.0.0.0	34.00 (864)	.0.0.0	0.0281 (7.014)
34 (850)	112.036 (167.021)	10	34.00 (864)	.0.0.0	0.0312 (7.092)
34 (850)	123.077 (184.034)	.0.0.0	34.00 (864)	.0.0.0	0.0344 (8.074)
34 (850)	134.079 (200.082)	.0.0.0	34.00 (864)	STD	0.0375 (9.053)
34 (850)	145.08 (217.006)	.0.0.0	34.00 (864)	.0.0.0	0.0406 (10.031)
34 (850)	157.014 (234.01)	.0.0.0	34.00 (864)	.0.0.0	0.0438 (11.013)
34 (850)	168.011 (250.027)	.0.0.0	34.00 (864)	.0.0.0	0.0469 (11.091)
34 (850)	179.006 (266.063)	20	34.00 (864)	XS	0.05 (12.07)
34 (850)	200.089 (299.004)	.0.0.0	34.00 (864)	.0.0.0	0.0562 (14.027)
34 (850)	222.099 (332.014)	30	34.00 (864)	.0.0.0	0.0625 (15.088)
34 (850)	245.00 (364.092)	40	34.00 (864)	.0.0.0	0.0688 (17.048)
34 (850)	266.058 (396.096)	.0.0.0	34.00 (864)	.0.0.0	0.075 (19.005)
34 (850)	288.008 (428.088)	.0.0.0	34.00 (864)	.0.0.0	0.0812 (20.062)
34 (850)	309.084 (461.048)	.0.0.0	34.00 (864)	.0.0.0	0.0875 (22.023)
34 (850)	331.052 (493.075)	.0.0.0	34.00 (864)	.0.0.0	0.0938 (23.083)
34 (850)	352.077 (525.03)	.0.0.0	34.00 (864)	.0.0.0	1.00 (25.04)
34 (850)	373.094 (556.073)	.0.0.0	34.00 (864)	.0.0.0	1.0062 (26.097)
34 (850)	395.036 (588.083)	.0.0.0	34.00 (864)	.0.0.0	1.0125 (28.058)
34 (850)	416.07 (620.06)	.0.0.0	34.00 (864)	.0.0.0	1.0188 (30.018)
34 (850)	437.062 (651.065)	.0.0.0	34.00 (864)	.0.0.0	1.025 (31.075)
36 (900)	95.054 (142.014)	.0.0.0	36.00 (914)	.0.0.0	0.025 (6.035)
36 (900)	107.03 (159.068)	.0.0.0	36.00 (914)	.0.0.0	0.0281 (7.014)
36 (900)	119.003 (176.097)	10	36.00 (914)	.0.0.0	0.0312 (7.092)
36 (900)	131.012 (195.012)	.0.0.0	36.00 (914)	.0.0.0	0.0344 (8.074)
36 (900)	142.081 (212.057)	.0.0.0	36.00 (914)	STD	0.0375 (9.053)
36 (900)	154.048 (229.077)	.0.0.0	36.00 (914)	.0.0.0	0.0406 (10.031)
36 (900)	166.051 (247.082)	.0.0.0	36.00 (914)	.0.0.0	0.0438 (11.013)
36 (900)	178.014 (264.096)	.0.0.0	36.00 (914)	.0.0.0	0.0469 (11.091)
36 (900)	189.075 (282.029)	20	36.00 (914)	XS	0.05 (12.07)
36 (900)	212.09 (316.063)	.0.0.0	36.00 (914)	.0.0.0	0.0562 (14.027)
36 (900)	236.035 (351.073)	30	36.00 (914)	.0.0.0	0.0625 (15.088)
36 (900)	259.071 (386.047)	.0.0.0	36.00 (914)	.0.0.0	0.0688 (17.048)
36 (900)	282.062 (420.045)	40	36.00 (914)	.0.0.0	0.075 (19.005)
36 (900)	305.044 (454.03)	.0.0.0	36.00 (914)	.0.0.0	0.0812 (20.062)
36 (900)	328.055 (488.089)	.0.0.0	36.00 (914)	.0.0.0	0.0875 (22.023)
36 (900)	351.057 (523.014)	.0.0.0	36.00 (914)	.0.0.0	0.0938 (23.083)
36 (900)	374.015 (556.062)	.0.0.0	36.00 (914)	.0.0.0	1.00 (25.04)
36 (900)	396.064 (589.098)	.0.0.0	36.00 (914)	.0.0.0	1.0062 (26.097)
36 (900)	419.042 (624.007)	.0.0.0	36.00 (914)	.0.0.0	1.0125 (28.058)
36 (900)	442.01 (657.081)	.0.0.0	36.00 (914)	.0.0.0	1.0188 (30.018)
36 (900)	464.035 (690.08)	.0.0.0	36.00 (914)	.0.0.0	1.025 (31.075)
38 (950)	125.07 (186.094)	.0.0.0	38.00 (965)	.0.0.0	0.0312 (7.092)
38 (950)	138.047 (206.011)	.0.0.0	38.00 (965)	.0.0.0	0.0344 (8.074)
38 (950)	150.083 (224.056)	.0.0.0	38.00 (965)	STD	0.0375 (9.053)
38 (950)	163.016 (242.074)	.0.0.0	38.00 (965)	.0.0.0	0.0406 (10.031)
38 (950)	175.087 (261.082)	.0.0.0	38.00 (965)	.0.0.0	0.0438 (11.013)
38 (950)	188.017 (279.094)	.0.0.0	38.00 (965)	.0.0.0	0.0469 (11.091)
38 (950)	200.044 (298.026)	.0.0.0	38.00 (965)	XS	0.05 (12.07)
38 (950)	224.092 (334.058)	.0.0.0	38.00 (965)	.0.0.0	0.0562 (14.027)
38 (950)	249.071 (371.07)	.0.0.0	38.00 (965)	.0.0.0	0.0625 (15.088)
38 (950)	274.042 (408.046)	.0.0.0	38.00 (965)	.0.0.0	0.0688 (17.048)
38 (950)	298.065 (444.041)	.0.0.0	38.00 (965)	.0.0.0	0.075 (19.005)
38 (950)	322.08 (480.024)	.0.0.0	38.00 (965)	.0.0.0	0.0812 (20.062)
38 (950)	347.026 (516.085)	.0.0.0	38.00 (965)	.0.0.0	0.0875 (22.023)
38 (950)	371.063 (553.011)	.0.0.0	38.00 (965)	.0.0.0	0.0938 (23.083)
38 (950)	395.053 (588.057)	.0.0.0	38.00 (965)	.0.0.0	1.00 (25.04)
38 (950)	419.035 (623.09)	.0.0.0	38.00 (965)	.0.0.0	1.0062 (26.097)
38 (950)	443.047 (660.001)	.0.0.0	38.00 (965)	.0.0.0	1.0125 (28.058)
38 (950)	467.05 (695.077)	.0.0.0	38.00 (965)	.0.0.0	1.0188 (30.018)
38 (950)	491.007 (730.074)	.0.0.0	38.00 (965)	.0.0.0	1.025 (31.075)

Stainless Steel 904L Seamless Tubes Of Manufacturing Process

There are 5 steps involved in stainless steel 904L seamless tubes manufacturing process which are given below. We follow a professional and precise manufacturing process to deliver high-quality products

1. Raw Material Selection

High-quality stainless steel billets and strips are carefully selected for superior strength and corrosion resistance.

2. Tubes Formation

The selected raw material is formed into tubes using seamless extrusion methods, depending on the application.

3. Heat Treatment

tubes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.

4. Cold Working and Finishing

After heat treatment, tubes are cold-worked for better surface finish, dimensional accuracy and improved strength.

5. Quality Control and Testing

Every tube is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.

Application Of Stainless Steel 904L Seamless Tubes

Stainless steel seamless 904L tubes are widely used in the chemical and petrochemical industry for handling highly corrosive fluids like sulfuric acid, phosphoric acid, and chloride-rich solutions, making it the sector with the highest usage. These tubes are widely used in heat exchangers, reactors, and piping systems where corrosion resistance and durability are critical. In oil refineries, they are used for processing acidic crude. Additionally, they are employed in marine environments, paper and pulp mills, and gas scrubbers due to their ability to withstand harsh conditions without degradation.

Oil and Gas Industry

Chemical and Petrochemical Industry

Food and Beverage Industry

Pharmaceutical & Biotechnology

Aerospace & Defense

Automotive and Transportation

Construction and Architecture

Marine & Shipbuilding

Power Generation & Heat Exchange

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FAQ's

What is 904L stainless steel tube used for?

A 904L stainless steel tube handles harsh and corrosive settings. It works well in applications that deal with strong acids, saltwater, and high heat. You often see it in chemical plants, oil and gas systems, and seawater equipment. It is also used in food units, heat exchangers, and clean water systems. The tube keeps its strength, even when other grades break down.

What are the advantages of 904L steel tube?

A 904L tube resists rust, acids, and pitting better than many regular stainless grades. It works well in saltwater and strong chemical areas. The tube remains strong in high heat and keeps its shape under pressure. It also lasts longer, which lowers repair and change-out needs. You get long service life and stable performance in tough work conditions.

What industries use 904L steel tube?

Many key industries choose 904L tubes because they stay strong in tough media. Chemical units use it for pipes that carry harsh fluids. The oil and gas sector uses it for offshore and refinery lines. Marine firms install it in seawater systems and ship parts. Food, dairy, and water plants use it for clean and safe flow lines. Power and heat plants also rely on it for high-heat service.

Can 904L steel be welded easily?

Yes, 904L steel can be welded with normal stainless steel tools and skill. The metal needs clean joints and good heat control to avoid cracks. Slow cooling helps keep its strength and corrosion resistance. No post-weld heat treatment is needed in most work, but good welding practice improves final results. When done right, the weld stays strong and long-lasting in harsh areas.