The item
304 seamless Pipes with an outside diameter of 21.3 mm in schedule 40. The default austenitic stainless. 18% chromium, 8% nickel, no molybdenum.
304 Seamless PipesIn stock
304 seamless pipes
OD 21.3 mm × SCH 40
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.
OD 21.3 mm × SCH 40UNS S30400 / S30403EN 1.4301 / 1.4306HSN 7304
Properties
Austenitic- PREN
- 19
- Relative cost
- 1.00×
- Max service temp
- 870 °C
- Magnetic
- No
- Weldability
- Excellent
- Machinability
- Fair
Pitting resistance equivalent. Higher resists chlorides better.
Indexed to 304. Indicative, for specification triage.
01Product description
304 stainless steel seamless Pipes, OD 21.3 mm × SCH 40: stockist and supplier in Mumbai
Rajgranth Metal & Alloys stocks and supplies 304 seamless Pipes, OD 21.3 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.
Grade and designations
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 and finishes
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.
Where it is used
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.
Ordering
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.
Also searched as
- 304 seamless Pipes, OD 21.3 mm × SCH 40 supplier
- 304 21.3 mm seamless Pipes stockist in Mumbai
- stainless Steel Seamless Pipes 21.3 mm
This size
07 rows- Grade
- 304
- Product
- Seamless Pipes
- Outside diameter
- 21.3 mm
- Schedule
- SCH 40
- Length
- 5 m6.5 m
Cut to length on request
- Ends
- PlainBevelled
- Certification
- EN 10204 3.1
3.2 with third-party inspection on request
Other sizes in this grade are supplied to order — usually from stock.
Surface finishes
08- Bright Annealed (CFA)
- Solution Annealed (CFD)
- Electro Polished (EP)
- Polished (APP)
- Annealed and Pickled (AP)
- Mirror Polish
- Matt Polish
- Cold Drawn
Standards
10- 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
- ASTM A511
- ASTM B163 / ASME SB-163
- ASTM B407 / ASME SB-407
01Also held
Other 304 seamless pipes sizes
Complete technical reference
SS seamless pipes grade 304 Diameter 21.3 mm X Sch 40
The full detail for this product as supplied from our Mumbai stockyard: sizes, grades, standards, tolerances, tests and applications.
SS seamless pipes grade 304 Diameter 21.3 mm X Sch 40 Stockholders, Suppliers & Exporters in India.
We are leading manufacturers, stockholders & exporters of SS seamless pipes in Mumbai, India. Stainless steel (SS) seamless pipes are a fundamental part of industrial applications, providing superior durability, corrosion resistance, and strength. Among the various grades available, SS Grade 304 is one of the most popular for its balanced properties and affordability. Whether it’s used in construction, oil and gas, or chemical industries, SS 304 seamless pipes deliver consistent performance, especially when designed in specific dimensions like 21.3 mm diameter and Schedule 40 thickness. This article dives into why this specific configuration is highly sought after and what makes it a top choice for various industries.
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What is SS Grade 304?
SS 304, or stainless steel 304, is an austenitic stainless steel known for its excellent resistance to corrosion, good mechanical properties, and versatility. The primary composition of Grade 304 includes 18% chromium and 8% nickel, giving it a strong resistance to oxidation and chemical damage. This makes it perfect for environments where the pipes may be exposed to moisture, acids, and other corrosive substances.
Schedule 40 (Sch 40): "Sch 40" relates to the wall thickness of the pipe. A Sch 40 pipe is known for its standard thickness, providing a balance between strength and ease of installation. It can withstand moderate pressures without being overly thick or heavy, making it perfect for applications such as water lines, gas systems, and more.
Specifications of SS Seamless Pipes
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.
Mechanical Properties of SS 304 Seamless Pipes
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.
Why Choose 21.3 mm X Sch 40 for Your Project?
Choosing 21.3 mm X Sch 40 is ideal for projects requiring moderate pressure and flow capabilities without incurring excessive costs. These pipes are robust enough for applications like fluid transportation and general plumbing, yet lightweight enough to be handled easily during installation. Whether you are working on industrial pipelines, construction projects, or irrigation systems, this specification offers an excellent balance of performance and affordability.
Industries that Rely on SS 304 Seamless Pipes
Several industries rely heavily on SS 304 seamless pipes for their projects, including::
- Construction: For structural applications and plumbing
- Oil and Gas: For pipelines, flow lines, and other critical systems
- Food and Beverage: For pipelines, flow lines, and other critical systems and safe food processing
- Chemical Plants: Withstanding exposure to chemicals and corrosive fluids
Stainless Steel Pipes Dimension – (S.S. Pipes)
3 entries
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
- ASTM A 312 TP 304
- ASTM A 312 TP 316L
- ASTM A 312 TP 317L
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
22 entries
| 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 |
|---|
Chemical Composition
22 entries
| 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 |
Applications of SS Seamless Pipes Grade 304 Diameter 21.3 mm X Sch 40
42 entries
SS seamless pipes made from Grade 304 and with a diameter of 21.3 mm X Sch 40 are highly versatile. Here are some common applications:
- Plumbing and Piping Systems: Ideal for water lines, especially in residential and commercial buildings where durability and corrosion resistance are key.
- Chemical Industry: The excellent corrosion resistance of SS 304 makes it suitable for transporting aggressive chemicals.
- Marine and Coastal Uses: : Given its resistance to saltwater corrosion, SS 304 is often used in marine applications such as shipbuilding and coastal infrastructure.
- Automotive Industry: Its high strength-to-weight ratio makes SS seamless pipes perfect for use in automotive exhaust systems and structural components
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304 / 304L applications
06- Food and dairy processing
- Architectural and structural trim
- Potable water systems
- General process piping
- Heat exchanger tube
- Fasteners and machined parts
304 seamless pipes, OD 21.3 mm × SCH 40.
Tell us the quantity and where it is going. We will confirm stock and come back with price the same working day.