The item
304 seamless Pipes with an outside diameter of 26.5 mm in schedule 40. The default austenitic stainless. 18% chromium, 8% nickel, no molybdenum.
This is a size we hold rather than one we have to roll. The default austenitic stainless. 18% chromium, 8% nickel, no molybdenum. Supplied with a mill test certificate to EN 10204 3.1 as standard.
Pitting resistance equivalent. Higher resists chlorides better.
Indexed to 304. Indicative, for specification triage.
Rajgranth Metal & Alloys stocks and supplies 304 seamless Pipes, OD 26.5 mm × SCH 40 from Mumbai, with the material, tests and documentation covered by our ISO 9001:2015 quality system. Rajgranth Metal & Alloys has been trading since 1980, is self-funded and debt-free, and despatches most orders from its Mumbai stockyard within two days.
304 seamless Pipes with an outside diameter of 26.5 mm in schedule 40. The default austenitic stainless. 18% chromium, 8% nickel, no molybdenum.
Stainless Steel 304 and 304L, designated UNS S30400 / S30403, EN 1.4301 / 1.4306, AISI 304 / 304L, JIS SUS304 / SUS304L, GB S30408 / S30403 and Werkstoff X5CrNi18-9 / X2CrNi19-11.
Standards include ASTM A213 / ASME SA-213, ASTM A269, ASTM A312 / ASME SA-312, ASTM A376 / ASME SA-376, ASTM A789 / ASME SA-789, ASTM A790 / ASME SA-790, ASTM A268 / ASME SA-268 and ASTM A511. Finishes and conditions include Bright Annealed (CFA), Solution Annealed (CFD), Electro Polished (EP), Polished (APP), Annealed and Pickled (AP), Mirror Polish, Matt Polish and Cold Drawn.
food and dairy processing, architectural and structural trim, potable water systems, general process piping, heat exchanger tube and fasteners and machined parts. We supply across India and export to markets in the Middle East, Africa, Europe, Asia, North America and South America.
Send the quantity, standard and any special requirement and we will confirm availability. Material is supplied with documentation, tested in house across 18 listed testing facilities, and covered by our ISO 9001:2015 quality management system.
Cut to length on request
3.2 with third-party inspection on request
The full detail for this product as supplied from our Mumbai stockyard: sizes, grades, standards, tolerances, tests and applications.

Rajgranth Metals & Allys is a well-known manufacturer, stockholders & exporters of Stainless-steel seamless pipes in Mumbai, India. In industries ranging from oil and gas to food processing, stainless steel (SS) seamless pipes have become indispensable due to their strength, durability, and resistance to corrosion. Among the different types of stainless-steel pipes, Grade 304 SS is particularly notable for its versatility and widespread use. This article will provide an in-depth look at SS seamless pipes Grade 304, with a specific focus on Diameter 26.5 mm X Sch 40. Let’s explore the properties, benefits, and applications of this specific pipe grade and dimension.
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Seamless pipes are a type of stainless steel pipe manufactured without a weld joint. This gives them a uniform structure and better mechanical properties, making them ideal for high-pressure environments.
Characteristics of Seamless Pipes: Seamless pipes are characterized by their smooth finish and uniform cross-section, which allows them to handle higher pressure compared to welded pipes.
Manufacturing Process of Seamless Pipes: These pipes are typically created using either the hot-rolling or cold-drawing process. A solid billet of steel is heated and then pierced through its center, creating a hollow tube that is stretched and formed into the required pipe dimensions.
Benefits of Using Seamless Pipes Over Welded Pipes: Seamless pipes have greater structural integrity, making them more resistant to pressure, stress, and temperature variations, which is why they are preferred in critical installations.
The process of making seamless pipes is complex but ensures the production of high-quality pipes.
Grade 304 stainless steel is an austenitic steel known for its excellent corrosion resistance, making it suitable for various industrial applications.
For anyone working with pipes, understanding pipe dimensions and schedules is essential. Diameter 26.5 mm and Schedule 40 (Sch 40) refer to the size and wall thickness of the pipe.
When selecting a pipe, two critical parameters are diameter and schedule. The diameter refers to the outer measurement of the pipe, while the schedule (Sch) indicates the thickness of the pipe wall, which in turn affects its pressure handling capacity.
A 21.3 mm diameter is a common size for many applications, providing the perfect balance of material strength without being overly bulky or heavy. Pipes of this size are often used in plumbing, irrigation, and industrial fluid transport, where medium flow rates are needed.
Schedule 40 refers to the pipe wall thickness. It is one of the most widely used schedules, especially in systems requiring moderate pressure and temperature handling. It strikes a balance between cost, durability, and performance, making it an ideal choice for various applications, including water and gas lines.
SS 304 seamless pipes are valued for their mechanical strength. These pipes exhibit impressive tensile strength, meaning they can withstand significant pulling forces without breaking. Additionally, they have good ductility, allowing them to deform under stress rather than fracturing, which is critical in applications where pressure fluctuations occur.
Several industries rely heavily on SS 304 seamless pipes for their projects, including::
ANSI B36.19 STAINLESS STEEL PIPE DIMENSION IN MM & WEIGHT PER KG.
Nominal Pipe Size
Outside Diameter
Schedule 5 S
Schedule 10 S
Schedule 20 S
Schedule 40 S
Schedule 80 S
Schedule 160 S
XXS
mm
inch
WT mm
Weight (KGM)
3
1/8
10.3
1.2
0.20
1.24
0.28
1.5
0.33
1.73
0.37
2.41
0.47
-
6
1/4
13.7
1.65
0.49
2.00
0.58
2.24
0.630
3.02
0.80
10
3/8
17.1
0.63
0.74
2.31
0.840
3.20
1.10
15
1/2
21.3
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
1.03
1.28
1.52
2.87
1.69
3.91
2.20
5.56
2.90
7.82
3.64
25
1
33.4
1.30
2.09
3.38
2.50
4.55
3.24
6.35
4.24
9.09
5.45
32
1.1/4
42.2
2.70
3.00
3.56
3.39
4.85
4.47
5.61
9.70
7.77
40
1.1/2
48.3
1.91
3.11
3.55
3.68
4.05
5.08
5.41
7.14
7.25
11.1
10.18
50
2
60.3
2.40
3.93
5.44
5.54
7.48
8.74
11.11
11.07
13.44
65
2.1/2
73.0
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
88.9
4.51
6.45
8.37
5.49
11.29
7.62
15.27
21.30
15.24
27.68
100
4
114.3
5.84
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
9.47
3.40
11.57
5.00
16.80
6.55
21.8
30.97
15.88
49.11
19.05
57.43
150
168.3
11.32
13.84
25.36
7.11
28.26
10.97
42.56
18.25
67.53
21.95
79.22
200
8
219.1
14.79
3.76
19.96
33.31
8.18
42.55
12.7
64.64
23.01
111.27
22.23
107.92
250
273.1
22.63
4.19
27.78
41.77
9.27
60.31
96.01
28.58
172.33
25.40
155.15
300
12
323.8
3.96
31.25
4.57
36.00
49.7
73.88
132.05
33.32
238.76
186.97
350
14
355.6
34.36
4.78
41.3
7.92
67.80
11.13
94.59
400
16
406.4
41.56
47.29
77.83
123.30
450
18
457.2
46.81
53.26
87.71
14.27
155.80
500
508.0
59.25
68.61
117.14
15.09
183.42
600
24
610.0s
5.54s
82.47
94.45
141.12
17.48
255.41
| CHEMICAL COMPOSITION ( IN PERCENTAGE ) | 11 | 1 | ||||||||
| Grade | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni | Mo | Nitrogen (Max) | Cu/ Others |
| 301 | 0.15 | 2 | 0.045 | 0.03 | 1 | 16.00 – 18.00 | 6.00 – 8.00 | – | 0.1 | – |
| 304 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 8.00- 10.50 | – | 0.1 | – |
| 304L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 8.00- 12.00 | – | 0.1 | – |
| 310S | 0.08 | 2 | 0.045 | 0.03 | 1.5 | 24.00- 26.00 | 19.00 – 22.00 | – | – | – |
| 316 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 16.00 – 18.00 | 10.00 – 14.00 | 2.00 – 3.00 | 0.1 | – |
| 316L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 16.00 – 18.00 | 10.00 – 14.00 | 2.00 – 3.00 | 0.1 | – |
| 317 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 11.00 – 14.00 | 3.00 – 4.00 | 0.1 | – |
| 317L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 11.00 – 15.00 | 3.00 – 4.00 | 0.1 | – |
| 321 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 17.00 – 19.00 | 9.00 – 12.00 | – | 0.1 | Ti5 ( C + N ) Min or 0.70 max |
| 347 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 17.00 – 19.00 | 9.00 – 13.00 | – | – | Cb= 10x ( C Min ) or 1.00 Max |
| 409 | 0.08 | 1 | 0.04 | 0.01 | 1 | 10.50 – 11.75 | 0.5 | – | – | Ti= 6x (C+ N ) Min or 0.70 Max |
| 409M | 0.03 | 0.81.2 | 0.03 | 0.03 | 0.40.75 | 11.00- 12.00 | 1.5 max. | – | – | Ti= 6x (C) Min or 0.70 Max |
| 410S | 0.08 | 1 | 0.04 | 0.03 | 1 | 11.50- 13.50 | 0.6 | – | – | – |
| 410 | 0.15 | 1 | 0.04 | 0.03 | 1 | 11.50- 13.50 | 0.75 | – | – | – |
| 420 | 0.35 | 0.5 | 0.035 | 0.015 | 0.5 | 12.00 – 13.00 | 0.20.3 | – | – | – |
| 430 | 0.12 | 1 | 0.04 | 0.03 | 1 | 16.00 – 18.00 | 0.75 | – | – | – |
| JSL AUS | 0.08 | 7.08.0 | 0.07 | 0.03 | 0.75 | 15.50 – 16.50 | 4.25 – 4.75 | – | – | 0.9 – 1.10 |
| JS- 203 | 0.08 | 9.2510.25 | 0.07 | 0.03 | 0.75 | 14.25 – 15.25 | 2.25 – 2.75 | – | – | 1.60- 2.0 |
| 301M | 0.1 | 4.55.5 | 0.06 | 0.03 | 0.75 | 14.50 – 15.50 | 6.0 – 7.0 | – | – | 1.70- 1.90 |
| * Thickness of 1.27mm & below will have elongation of 20% min. | 11 | 1 |
|---|
| MECHANICAL PROPERTIES | 6 | 1 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade | 1 | 2 | Tensile Strength Mpa, (Min) | 1 | 2 | Yield Strength Mpa, (Min) | 1 | 2 | %Age Elongation in 50mm gauge length min | 1 | 2 | Hardness (Max) | 2 | 1 |
| BHN | Rb | |||||||||||||
| 301 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 304 | 515 | 205 | 40 | 201 | 92 | |||||||||
| 304L | 485 | 170 | 40 | 201 | 92 | |||||||||
| 310S | 515 | 205 | 40 | 217 | 95 | |||||||||
| 316 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 316L | 485 | 170 | 40 | 217 | 95 | |||||||||
| 317 | 515 | 205 | 35 | 217 | 95 | |||||||||
| 317L | 515 | 205 | 40 | 217 | 95 | |||||||||
| 321 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 347 | 515 | 205 | 40 | 201 | 92 | |||||||||
| 409 | 380 | 170 | 20 | 179 | 88 | |||||||||
| 409M | 430 | 275 | 20 | 187 | 90 | |||||||||
| 410S | 415 | 205 | 22 | 183 | 89 | |||||||||
| 410 | 450 | 205 | 20 | 217 | 89 | |||||||||
| 420 | 700( max ) | – | 15 | 217 | 95 | |||||||||
| 430 | 450 | 205 | 22 | 183 | 89 | |||||||||
| JSL AUS | 515 | 205 | 40 | 217 | 95 | |||||||||
| JS- 203 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 301M | 515 | 205 | 40 | 217 | 95 |
SS seamless pipes made from Grade 304 and with a diameter of 26.5 mm X Sch 40 are highly versatile. Here are some common applications:
Our Stainless Steel Seamless Tube Used In Many Industries & Have Many Application
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