Stainless Steel 304 Pipes

Name: Stainless Steel 304/304L/304H Pipes
Brand: Solitaire Overseas

Stainless Steel 304, 304L & 304H Pipes Manufacturer, Supplier & Exporter

We at Solitaire Overseas provide high quality stainless steel products, and we have a large number of stainless steel pipes, including 304 stainless steel pipes, 304l stainless steel pipes, and stainless steel 304h pipes to national and international customers. Our products are recognized by various industries as high quality, and most effective. At Solitaire Overseas we source high grade raw material from established high grade vendors so that when the 304 stainless steel pipe supplier delivers to their customers, it is squeaky clean quality. We focus on providing complete satisfaction for their customers by selling only high quality, efficient, and durable stainless steel pipes at the best price. We have customized specifications of various sizes and dimensions based on the requirements of our customers.

Stainless Steel 304 Seamless Pipe

The nominal bore size range of the stainless steel 304 seamless pipe is ½ to 16 inches. The sizes of electric resistance welded (ERW) pipes range from ½ to 24 inches. Our Electric Fusion Welded (EFW) pipes are available with nominal bore sizes ranging from 6 inches to 100 inches for greater diameter applications. All of the pipes range in size from 1/8 inch to 30 inches.

Stainless Steel 304 Welded Pipe

The AWS specification A535 permits the use of older weld techniques. The stainless steel 304 welded pipe can range from a narrow piece of sheet or strip. Seamless, welded or LSAW pipes can be found in different shapes with round, square, rectangular and hydraulic types.

Grades Overview of Stainless Steel Pipes:

304 stainless steel pipes are available in grades, depending on the required properties of the material. A few of the most common grades include:

Grade ss 304 pipe is a classic stainless alloy which provides an optimal balance of strength, ductility and resistance to corrosion. Often chosen for architectural, industrial, and domestic implementations, this grade serves as the benchmark in multifaceted environments.

Stainless Steel 304 Pipes Specifications

Category	Details
Specifications	ASTM / ASME SA213/A249/A269/A312/A358 Cl. 1 to V / ASTM A789/A790
Dimensions	ASTM, ASME and API
304 Pipes & Tubes	1/2" NB - 16" NB
ERW 304 Pipes & Tubes	1/2" NB - 24" NB
EFW 304 Pipes & Tubes	6" NB - 100" NB
Size	1/8" NB to 30" NB in
Specialized in	Large Diameter Size
Schedule	SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type	Seamless / ERW / Welded / Fabricated / LSAW Pipes
Form	Round, Square, Rectangular, Hydraulic Etc
Length	Single Random, Double Random & Cut Length
End	Plain End, Beveled End, Threaded

Stainless Steel 304 Pipes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 304	1.4301	S30400	SUS 304	304S31	08Х18Н10	Z7CN18-09	X5CrNi18-10

Chemical Composition of 304 Stainless Steel Pipes

Element	C	Mn	Si	P	S	Cr	Ni
SS 304	0.08 max	2 max	0.75 max	0.045 max	0.030 max	18 – 20	8 – 11

Mechanical Properties of Stainless Steel 304 Pipes

Property	Tensile Strength	Yield Strength (0.2% offset)	Elongation (in 50mm)	Hardness (Brinell)	Hardness (Rockwell B)	Modulus of Elasticity
Value	515 MPa (min)	205 MPa (min)	40% (min)	201 (max)	92 (max)	193 GPa (28 x 10⁶ psi)

Physical Properties of Stainless Steel 304 Pipes

Property	Density	Melting Point	Thermal Conductivity	Electrical Resistivity	Specific Heat Capacity	Coefficient of Expansion
Value	8.00 g/cm³	1400 – 1450 °C	16.2 W/m·K at 100 °C	0.72 x 10⁻⁶ Ω·m	500 J/kg·K	17.2 μm/m·K (0–100 °C)

304 Stainless Steel Pipe Sizes

ASTM A312 SS 304 Pipe OD mm	Sch	Kg/m	Pipe WT mm	Inches.
13.72	10S	0.50	1.65	1/4
33.40	40S	2.54	3.38	1
42.16	40S	3.44	3.56	1¼
17.15	40S	0.86	2.31	3/8
101.60	40S	13.78	5.74	3½
88.90	40S	11.47	5.49	3
21.34	10S	1.02	2.11	1/2
60.33	40S	5.52	3.91	2
73.03	80S	11.59	7.01	2½
114.30	160	34.05	13.492)	4
168.28	80S	43.21	10.97	6
141.30	80S	31.44	9.53	5
219.08	80S	65.63	12.7	8
17.15	10S	0.64	1.65	3/8
48.26	40S	4.11	3.68	1½
26.67	10S	1.30	2.11	3/4
42.16	160	5.69	6.352)	1¼

Tolerance Chart of 304 Stainless Steel Tubing

Stainless Steel 304 Pipe OD	ASTM A312 TP304 Pipe Tolerance
4 to 35 mm	± 0.08 mm
35 to 38 mm	± 0.15 mm
38 to 60 mm	± 0.20 mm
60 mm and above	± 0.25 mm

304l Stainless Steel Pipes:

304l Stainless Steel grade has a little more nickel and has enhanced weldability that makes it suitable for industrial applications where ease of fabrication and formability are required. This grade has a little more nickel and has enhanced weldability that makes it suitable for industrial applications where ease of fabrication and formability are required.

304l Stainless Steel Pipes Specifications

Specification	Details
Standards	ASTM A312 / A213 / A269 / A249
Grade	304L
Size Range	1/8" NB to 24" NB
Wall Thickness	Sch 5S, Sch 10S, Sch 40S, Sch 80S
Outer Diameter	6mm – 630mm
Length	Single Random, Double Random, Cut Length
Type	Seamless, Welded, ERW, Fabricated
End Finish	Plain End, Beveled End, Threaded
Surface Finish	Annealed, Pickled, Polished

304l Stainless Steel Pipes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 304L	1.4306 / 1.4307	S30403	SUS 304L	3304S11	03Х18Н11	Z3CN18‐10	X2CrNi18-9 / X2CrNi19-11

Chemical Composition of 304l Stainless Steel Pipes

Element	C	Mn	Si	P	S	Cr	Ni
SS 304L	0.035 max	2 max	1.0 max	0.045 max	0.030 max	18 – 20	8 – 13

Mechanical Properties of 304l Stainless Steel Pipes

Property	Tensile Strength	Yield Strength (0.2% offset)	Elongation (in 50mm)	Hardness (Brinell)	Hardness (Rockwell B)	Modulus of Elasticity
Value	485 MPa (min)	170 MPa (min)	40% (min)	201 (max)	92 (max)	193 GPa (28 x 10⁶ psi)

Physical Properties of Stainless Steel 304l Pipes

Property	Density	Melting Point	Thermal Conductivity	Electrical Resistivity	Specific Heat Capacity	Coefficient of Expansion
Value	8.00 g/cm³	1390 – 1440 °C	16.2 W/m·K at 100 °C	0.72 x 10⁻⁶ Ω·m	500 J/kg·K	17.2 μm/m·K (0–100 °C)

304H Stainless Steel Pipes:

Grade 304H has a higher carbon content, providing greater creep resistance and making it suitable for high-temperature applications. It also offers excellent corrosion resistance, high strength, and good durability.

304H Stainless Steel Pipes Specifications

Specification	Details
Standards	ASTM A312 / A213 / A269 / A358
Grade	304H
Size Range	1/8" NB to 24" NB
Wall Thickness	Sch 5S to Sch XXS
Outer Diameter	6mm – 630mm
Length	Single Random, Double Random, Custom
Type	Seamless, Welded, ERW, Fabricated
End Finish	Plain End, Beveled End, Threaded
Surface Finish	Annealed, Pickled, Polished

304H Stainless Steel Pipes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 304H	1.4301	S30409	SUS 304H	-	-	-	-

Chemical Composition of 304H Stainless Steel Pipes

Element	C	Mn	Si	P	S	Cr	Ni
SS 304H	0.10 max	2 max	0.75 max	0.045 max	0.030 max	18 – 20	8 – 10.5

Mechanical Properties of 304H Stainless Steel Pipes

Property	Tensile Strength	Yield Strength (0.2% offset)	Elongation (in 50mm)	Hardness (Brinell)	Hardness (Rockwell B)	Modulus of Elasticity
Value	585 MPa (min)	290 MPa (min)	40% (min)	217 (max)	95 (max)	193 GPa (28 x 10⁶ psi)

Stainless Steel 304/304L/304H Pipe & Tube Dimensions Chart

When selecting stainless steel pipes or tubes, precise knowledge of NB size, outside diameter, and wall thickness across different schedules is essential for ensuring compatibility with project requirements. This chart provides standard measurements for 304/304L/304H grades, helping buyers quickly identify the right dimensions for pressure ratings, flow capacity, and fabrication needs.

NB Size (mm)	NPS (inch)	Outside Diameter (mm)	Outside Diameter (inch)	Sch 5S (mm)	Sch 10S (mm)	Sch 20 (mm)	Sch 30 (mm)	Sch 40 (mm)	STD (mm)	Sch 80 (mm)	XS (mm)	Sch 160 (mm)	XXS (mm)
8	1/4	13.7	0.54	–	1.65	–	1.85	2.24	2.24	3.02	3.02	–	–
10	3/8	17.1	0.675	–	1.65	–	1.85	2.31	2.31	3.20	3.20	–	–
15	1/2	21.3	0.84	1.65	2.11	–	2.41	2.77	2.77	3.73	3.73	4.78	7.47
20	3/4	26.7	1.05	1.65	2.11	–	2.41	2.87	2.87	3.91	3.91	5.56	7.82
25	1	33.4	1.32	1.65	2.77	–	2.90	3.38	3.38	4.55	4.55	6.35	9.09
32	1 1/4	42.2	1.66	1.65	2.77	–	2.97	3.56	3.56	4.85	4.85	6.35	9.70
40	1 1/2	48.3	1.90	1.65	2.77	–	3.18	3.68	3.68	5.08	5.08	7.14	10.15
50	2	60.3	2.38	1.65	2.77	–	3.18	3.91	3.91	5.54	5.54	8.74	11.07
65	2 1/2	73.0	2.88	2.11	3.05	–	4.78	5.16	5.16	7.01	7.01	9.53	14.02
80	3	88.9	3.50	2.11	3.05	–	4.78	5.49	5.49	7.62	7.62	11.13	15.24
90	3 1/2	101.6	4.00	2.11	3.05	–	4.78	5.74	5.74	8.08	8.08	–	–
100	4	114.3	4.50	2.11	3.05	–	4.78	6.02	6.02	8.56	8.56	13.49	17.12
125	5	141.3	5.56	2.77	3.40	–	–	6.55	6.55	9.53	9.53	15.88	19.05
150	6	168.3	6.62	2.77	3.40	–	–	7.11	7.11	10.97	10.97	18.26	21.96
200	8	219.1	8.62	2.77	3.76	6.35	7.04	8.18	8.18	12.70	12.70	23.01	22.23
250	10	273.0	10.75	3.40	4.19	6.35	7.80	9.27	9.27	15.09	12.70	28.58	25.40
300	12	323.8	12.75	3.96	4.57	6.35	8.38	10.13	9.53	17.48	12.70	33.32	25.40
350	14	355.6	14.00	3.96	4.78	7.92	9.53	11.13	9.53	19.05	12.70	35.71	–
400	16	406.4	16.00	4.19	4.78	7.92	9.53	12.70	9.53	21.44	12.70	40.49	–
450	18	457.0	18.00	4.19	4.78	7.92	11.13	14.27	9.53	23.83	12.70	45.24	–
500	20	508.0	20.00	4.78	5.54	9.53	12.70	15.09	9.53	26.19	12.70	50.01	–
550	22	559.0	22.00	4.78	5.54	9.53	12.70	–	9.53	28.58	12.70	53.98	–
600	24	610.0	24.00	5.54	6.35	9.53	14.27	17.48	9.53	30.96	12.70	59.54	–
650*	26	660.0	26.00	–	–	–	–	–	9.53	–	12.70	–	–
700*	28	711.0	28.00	–	–	–	–	–	9.53	–	12.70	–	–
750*	30	762.0	30.00	–	–	–	–	–	9.53	–	12.70	–	–
800*	32	813.0	32.00	–	–	–	–	–	9.53	–	12.70	–	–

Selecting the correct combination of pipe size and schedule is critical for achieving desired pressure ratings, flow rates, and structural integrity. Thicker schedules increase strength and pressure resistance, but also add weight and cost. This chart makes it easier to match project needs with industry-standard dimensions, ensuring both performance and cost efficiency.

304/304L/304H Stainless Steel Exhaust Pipe Size Chart (mm)

ASTM A312 SS 304 Pipe OD (mm)	Pipe WT (mm)	NPS (in.)	Schedule	Weight (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	6.35	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	6.35	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	8.74	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	11.13	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	13.49	4	160	34.05
141.30	6.55	5	40S	22.10
141.30	9.53	5	80S	31.44
141.30	15.88	5	160	49.87
168.28	3.40	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	18.26	6	160	68.59
219.08	8.18	8	40S	43.20
219.08	12.70	8	80S	65.63
219.08	18.23	8	120	91.30
219.08	23.01	8	160	112.97

SS 304/304L/304H ERW Tube Size Chart

When choosing stainless steel exhaust pipes, it’s essential to match outer diameter, wall thickness, and schedule rating with your application’s temperature, pressure, and durability requirements. The chart below details the standard sizes, schedules, and weights for ASTM A312 TP304, making it easier for buyers to select the right option for both performance and cost-effectiveness.

Wall Thickness (in.)	Stainless Steel 304 Tube Sizes (O.D.)
0.010	1/16", 1/8", 3/16"
0.012	1/8"
0.016	1/8", 3/16"
0.020	1/16", 1/8", 3/16", 1/4", 5/16", 3/8"
0.028	1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 3/4", 1", 1 1/2", 2"
0.035	1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
0.049	3/16", 1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
0.065	1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 3/4", 2", 2 1/2", 3"
0.083	1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 7/8", 2", 2 1/2", 3"
0.095	1/2", 5/8", 1", 1 1/4", 1 1/2", 2"
0.109	1/2", 3/4", 1", 1 1/4", 1 1/2", 2"
0.120	1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 2", 2 1/4", 2 1/2", 3"
0.125	3/4", 1", 1 1/4", 1 1/2", 2", 3", 3 1/4"
0.134	1"
0.250	3"
0.375	3 1/2"

Choosing the correct exhaust pipe dimensions is critical for ensuring proper airflow, reducing back pressure, and maintaining long-term corrosion resistance. The wall thickness and schedule directly affect durability and weight, which can impact both installation ease and system performance. For high-temperature or high-pressure exhaust systems, opt for thicker schedules to enhance service life.

Weight Chart of Stainless Steel 304/304L/304H Pipes & Tubes

When purchasing stainless steel pipes and tubes, weight is a key factor influencing both material cost and structural performance. This chart provides a quick reference for buyers to compare nominal sizes, wall thickness (WT), and weight per meter across different schedules. Understanding these values helps in estimating load-bearing capacity, transportation requirements, and project budgeting.

Nominal Pipe Size (mm)	NPS (inch)	Outside Diameter (mm)	Sch 5S WT (mm) / Wt (Kg/m)	Sch 10S WT (mm) / Wt (Kg/m)	Sch 20S WT (mm) / Wt (Kg/m)	Sch 40S WT (mm) / Wt (Kg/m)	Sch 80S WT (mm) / Wt (Kg/m)	Sch 160S WT (mm) / Wt (Kg/m)	XXS WT (mm) / Wt (Kg/m)
3	1/8	10.3	1.20 / 0.20	1.24 / 0.28	1.50 / 0.33	1.73 / 0.37	2.41 / 0.47	– / –	– / –
6	1/4	13.7	1.20 / 0.37	1.65 / 0.49	2.00 / 0.58	2.24 / 0.63	3.02 / 0.80	– / –	– / –
10	3/8	17.1	1.20 / 0.47	1.65 / 0.63	2.00 / 0.74	2.31 / 0.84	3.20 / 1.10	– / –	– / –
15	1/2	21.3	1.65 / 0.80	2.11 / 1.00	2.30 / 1.07	2.77 / 1.27	3.73 / 1.62	4.75 / 1.94	7.47 / 2.55
20	3/4	26.7	1.65 / 1.03	2.11 / 1.28	2.55 / 1.52	2.87 / 1.69	3.91 / 2.20	5.56 / 2.90	7.82 / 3.64
25	1	33.4	1.65 / 1.30	2.77 / 2.09	2.55 / 1.94	3.38 / 2.50	4.55 / 3.24	6.35 / 4.24	9.09 / 5.45
32	1¼	42.2	1.65 / 1.65	2.77 / 2.70	3.00 / 2.90	3.56 / 3.39	4.85 / 4.47	6.35 / 5.61	9.70 / 7.77
40	1½	48.3	1.65 / 1.91	2.77 / 3.11	3.00 / 3.55	3.68 / 4.05	5.08 / 5.41	7.14 / 7.25	11.10 / 10.18
50	2	60.3	1.65 / 2.40	2.77 / 3.93	3.00 / 4.24	3.91 / 5.44	5.54 / 7.48	8.74 / 11.11	11.07 / 13.44
65	2½	73.0	2.11 / 3.69	3.05 / 5.26	4.00 / 6.81	5.16 / 8.63	7.01 / 11.41	9.53 / 14.91	14.02 / 20.39
80	3	88.9	2.11 / 4.51	3.05 / 6.45	4.00 / 8.37	5.49 / 11.29	7.62 / 15.27	11.10 / 21.30	15.24 / 27.68
100	4	114.3	2.11 / 5.84	3.05 / 8.36	4.50 / 12.18	6.02 / 16.07	8.56 / 22.32	13.49 / 33.54	17.12 / 41.03
125	5	141.3	2.77 / 9.47	3.40 / 11.57	5.00 / 16.80	6.55 / 21.80	9.53 / 30.97	15.88 / 49.11	19.05 / 57.43
150	6	168.3	2.77 / 11.32	3.40 / 13.84	6.35 / 25.36	7.11 / 28.26	10.97 / 42.56	18.25 / 67.53	21.95 / 79.22
200	8	219.1	2.77 / 14.79	3.76 / 19.96	6.35 / 33.31	8.18 / 42.55	12.70 / 64.64	23.01 / 111.27	22.23 / 107.92
250	10	273.1	3.40 / 22.63	4.19 / 27.78	6.35 / 41.77	9.27 / 60.31	12.70 / 96.01	28.58 / 172.33	25.40 / 155.15
300	12	323.8	3.96 / 31.25	4.57 / 36.00	6.35 / 49.70	9.53 / 73.88	12.70 / 132.05	33.32 / 238.76	25.40 / 186.97
350	14	355.6	3.96 / 34.36	4.78 / 41.30	7.92 / 67.80	11.13 / 94.59	– / –	– / –	– / –

Heavier schedules and wall thicknesses improve pressure resistance and mechanical strength, but they also increase material weight and cost. Buyers should balance performance needs with budget constraints. For high-pressure industrial systems, higher schedules like 80S, 160S, or XXS may be the preferred choice for long-term durability.

304/304l/304h SS Schedule 40 Pipe Standard Weight Chart

When selecting stainless steel pipes for industrial projects, knowing the exact wall thickness and weight is crucial for accurate load calculations, compliance with piping standards, and cost planning. The table below provides standard weight details for Schedule 40 pipes in 304, 304L, and 304H stainless steel grades, helping buyers make precise procurement decisions.

Schedule Code	Wall Thickness (in.)	Weight per Foot (lb/ft)	Weight per Meter (kg/m)
28	0.028	0.31	0.46
35	0.035	0.39	0.58
39	0.039	0.44	0.65
49	0.049	0.56	0.83
65	0.065	0.74	1.10
83	0.083	0.94	1.40
109	0.109	1.21	1.80

Understanding these dimensions helps buyers select the correct pipe size and schedule to ensure performance, durability, and budget alignment. For projects where weight and wall thickness are critical—such as high-pressure systems or structural applications—this chart is an essential reference during material selection.

Pressure Rating Table – SS UNS S30400 Square Pipe

When selecting SS UNS S30400 square pipes, understanding the pressure rating, wall thickness, and weight is essential to ensure safe and reliable performance in your application. The table below gives detailed measurements for various NPS sizes and schedules, helping buyers choose the correct specification for structural strength, weight capacity, and project cost efficiency.

NPS (inch)	OD (inch)	OD (mm)	Wall Thickness (in.)	Wall Thickness (mm)	Schedule	Weight (Kg/m)	Weight (Lb/ft)
1/2″	0.840	21	0.109	2.769	40 STD	1.268	0.851
			0.147	3.734	80 STD	1.621	1.088
3/4″	1.050	27	0.113	2.870	40 STD	1.684	1.131
			0.154	3.912	80 STD	2.195	1.474
1″	1.315	33	0.133	3.378	40 STD	2.501	1.679
			0.179	4.547	80 STD	3.325	2.172
1 1/4″	1.660	42	0.140	3.556	40 STD	3.385	2.273
			0.191	4.851	80 STD	4.464	2.997
1 1/2″	1.900	48	0.145	3.683	40 STD	4.048	2.718
			0.200	5.080	80 STD	5.409	3.361
2″	2.375	60	0.154	3.912	40 STD	5.441	3.653
			0.218	5.537	80 STD	7.480	5.022
2 1/2″	2.875	73	0.203	5.516	40 STD	8.629	5.793
			0.276	7.010	80 STD	11.411	7.661
3″	3.500	89	0.216	5.486	40 STD	11.284	7.576
			0.300	7.620	80 STD	15.272	10.253
4″	4.500	114	0.237	6.020	–	16.073	10.790
			0.337	8.560	–	22.318	14.983
...	...	...	...	...	...	...	...

This data allows buyers to match pipe size and schedule to the required pressure capacity, ensuring safe operation in applications such as structural framing, mechanical systems, and process piping. Choosing the right combination of OD, wall thickness, and weight not only improves safety but also optimizes material costs and long-term performance.

Tolerance Chart – 304/304L/304H Stainless Steel Pipes

For precision applications, the outer diameter tolerance of stainless steel tubes is critical to ensure proper fit, sealing, and performance in assemblies. The table below lists standard tolerances as per ASTM A312 TP304 specifications.

Stainless Steel 304 Pipe OD (mm)	ASTM A312 TP304 Pipe Tolerance (± mm)
4 to 35 mm	± 0.08 mm
35 to 38 mm	± 0.15 mm
38 to 60 mm	± 0.20 mm
60 mm and above	± 0.25 mm

Tighter tolerances mean better dimensional accuracy, which is essential for high-pressure systems, welded assemblies, and OEM manufacturing. Selecting the right tolerance ensures easier installation, improved sealing performance, and reduced rework or rejection rates during fabrication.

Stainless Steel 304 / 304L / 304H Pipe Application

SS 304 Pipes in various Application Industries

Food Processing Industry

Fabrication Industry

Oil and Gas Industry

Chemical Industry

Plumbing

General Purpose Applications

Heating

Water Supply Systems

Power Plant

Paper & Pulp Industry

Most Popular Types of 304 Stainless Steel Pipes and Tubing

Stainless Steel 304 Pipes are available in standard full lengths as well as custom cut lengths to meet specific project requirements.

ASTM A312 TP 304 Stainless Steel Seamless Pipes	ASTM A213 TP 304 Stainless Steel Seamless Tubes
ASTM A312 TP 304 Stainless Steel Welded Pipes	ASTM A249 TP 304 Stainless Steel Welded Tubes
SS 304 Seamless Pipes	SS 304 ERW Pipes
SS 304 Welded PipesSS 304 Rectangular Pipes	SS 304 Seamless Tubes
SS 304 ERW Tubes	SS 304 EFW Tubes
SS 304 Welded Tubes	SS 304 Rectangular Tubes

Quality Testing & Packaging of Stainless Steel 304/304L/304H Pipes

Material Testing

Many material tests are performed on Stainless Steel 304/304L/304H Pipes by the industry to ensure their quality and efficiency. The material tests carried out include:

Mechanical test
PMI test
IGC test
Pitting resistance test
Micro and macro test
Hardness test
Bend test
Flaring test
Flattening test
Chemical analysis

These are a few of the many tests performed to ensure that the quality and efficiency of these pipes are up to standard.

Packaging of the SS 304/304L/304H Pipes:

The industry uses efficient industrial methods to pack the SS grade pipes. The SS 304/304L/304H Pipes are wrapped in poly bags and then packed in wooden cases, crates or pallets that are free from fumigation and other impurities. Besides, they offer relevant shipping documents with the SS grade pipes.

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FAQ

How is Stainless Steel 304 pipe weight calculated?

Stainless steel 304 pipe's weight is calculated using one formula which is P=t(D−t)×C.
Where:
t = Thickness (mm or inches)
D = Outer Diameter (inches)
C = Specific weight of 304 stainless steel (0.287lbs/in3)

Is 304 stainless steel good quality?

304 stainless steel is good quality. It has excellent anti-corrosive property, good formability and good strength hence it is a popular and widely used stainless steel grade. 304 is indeed a very capable and often more economical choice for a wide array of applications.

What is the difference between Stainless Steel 304 & 316 pipes?

The primary difference depends on their chemical composition. 316 stainless steel includes molybdenum roughly 2% which boosts its corrosion resistance especially against chlorides and acids compared to 304. Visually they appear very similar.

How much percent is 304 stainless steel?

304 stainless steel contains about 18% chromium and 8% of nickel. It is popularly known as 18/8 stainless steel.

What is the difference between 304L and 304H?

304L has less carbon and more 0.03% for enhanced weldability. 304H has maximum carbon content 0.04 - 0.10% for higher strength at elevated temperatures including chemical resistance up to 925°C.

What is a 304H pipe?

Designed for use demanding great strength under harsh temperature, a 304H pipe is a high carbon variant of 304 stainless steel.

What is the difference between 304 and 304L stainless steel pipe?

The main difference is the carbon content. 304L's lower carbon level improves weldability and reduces the risk of sensitization, while 304 offers slightly higher strength but is more exposed to hostile environments during soldering.

What is stainless steel 304L?

Suitable for utensils like sinks and saucepans, stainless steel 304L is a low carbon austenitic grade with great weldability and uniformity for deep drawing process manufacture.

Where can I buy 304 stainless steel pipes and tubes?

We offer a comprehensive range of 304 stainless steel pipes and tubes. We may cut them to your precise proportions or provide them in conventional sizes. Purchasing directly from us makes getting what you need quite simple.