SS seamless pipes grade 304 Diameter 26.5 mm X Sch 40

SS seamless pipes grade 304 Diameter 26.5 mm X Sch 40 Stockholders, Suppliers & Exporters in India.

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.

SS seamless pipes grade 304 Diameter 26.5 mm X Sch 40
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What is SS Seamless Pipes?

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.

Manufacturing Process of SS Seamless Pipes

The process of making seamless pipes is complex but ensures the production of high-quality pipes.

  • Hot and Cold Rolling Methods: Hot rolling is used to form thicker pipes, while cold rolling or drawing produces thin-walled pipes. Both methods ensure the uniformity of the pipe's structure..
  • Quality Control Standards in Seamless Pipe Manufacturing: Hot rolling is used to form thicker pipes, while cold rolling or drawing produces thin-walled pipes. Both methods ensure the uniformity of the pipe's structure.
  • Surface Finishing Options for Seamless Pipes: Hot rolling is used to form thicker pipes, while cold rolling or drawing produces thin-walled pipes. Both methods ensure the uniformity of the pipe's structure.

Understanding Grade 304 Stainless Steel

Grade 304 stainless steel is an austenitic steel known for its excellent corrosion resistance, making it suitable for various industrial applications.

  • Chemical Composition of Grade 304: This grade primarily consists of 18% chromium and 8% nickel, which give it exceptional corrosion resistance and the ability to withstand oxidation at high temperatures.
  • Mechanical Properties of Grade 304: It exhibits excellent formability, high tensile strength, and a balanced level of ductility and toughness.
  • Why Grade 304 is Popular for Industrial Use: It exhibits excellent formability, high tensile strength, and a balanced level of ductility and toughness.

Specifics of Diameter 26.5 mm X Sch 40

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.

  • Diameter:: These pipes are frequently utilized in industrial piping systems, including water transport, chemical processing, and structural applications.
  • Schedule 40: These pipes are frequently utilized in industrial piping systems, including water transport, chemical processing, and structural applications.
  • Applications Where 26.5 mm X Sch 40 Pipes Are Commonly Used: These pipes are frequently utilized in industrial piping systems, including water transport, chemical processing, and structural applications.

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.

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)

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 mm WT mm Weight (KGM) WT mm Weight (KGM) WT mm Weight (KGM) WT mm Weight (KGM) WT mm Weight (KGM) WT mm Weight (KGM) 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 1.2 0.37 1.65 0.49 2.00 0.58 2.24 0.630 3.02 0.80 - - - -
10 3/8 17.1 1.2 0.47 1.65 0.63 2.00 0.74 2.31 0.840 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 1.1/4 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 1.1/2 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 11.1 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 2.1/2 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 11.1 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 21.8 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 12.7 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 12.7 96.01 28.58 172.33 25.40 155.15
300 12 323.8 3.96 31.25 4.57 36.00 6.35 49.7 9.53 73.88 12.7 132.05 33.32 238.76 25.40 186.97
350 14 355.6 3.96 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 4.19 41.56 4.78 47.29 7.92 77.83 12.7 123.30
450 18 457.2 4.19 46.81 4.78 53.26 7.92 87.71 14.27 155.80
500 20 508.0 4.78 59.25 5.54 68.61 9.53 117.14 15.09 183.42
600 24 610.0s 5.54s 82.47 6.35 94.45 9.53 141.12 17.48 255.41

Chemical Composition

CHEMICAL COMPOSITION ( IN PERCENTAGE )
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.

Chemical Composition

MECHANICAL PROPERTIES
Grade Tensile Strength
Mpa, (Min)		 Yield Strength
Mpa, (Min)		 %Age Elongation
in 50mm gauge
length min		 Hardness (Max)
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 26.5 mm X Sch 40

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:

  • 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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