What are the main applications of stainless steel 321 / 321H seamless pipes?

Stainless Steel 321 / 321H Seamless Pipes find a wide range of applications across various industries due to their exceptional qualities. These pipes are commonly used in high-temperature environments where resistance to corrosion and oxidation is critical. One of the primary applications of stainless steel 321 / 321H seamless pipes is in the petrochemical industry, particularly in the construction of refineries and chemical processing plants. They are utilized for transporting corrosive fluids and gases and handling high-pressure and high-temperature conditions. Additionally, these pipes are extensively employed in the aerospace and aviation sectors for manufacturing exhaust systems and components that require resistance to elevated temperatures and thermal cycling.

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Stainless Steel 321H Seamless Pipe, Stainless Steel TP321 Seamless Pipe, ASTM A312 TP 321 SS Seamless Pipes, SS 321 Seamless Pipe, 321 Stainless Steel Seamless Pipe, SS DIN 1.4541 Seamless Pipes, SS UNS S32100 Seamless Pipes, SS 321H Seamless Pipe, Stainless Steel 321 Seamless Pipe, 321H Stainless Steel Seamless Pipe, Stainless Steel 321 Seamless Pipe Supplier In Mumbai, India.

What are the key characteristics and properties of stainless steel 321 / 321H seamless pipes?

Stainless Steel 321 Seamless Pipes possess key characteristics and properties that make them highly desirable in various applications. Firstly, they exhibit excellent corrosion resistance, particularly against intergranular corrosion and pitting, making them suitable for environments with chloride-containing solutions. Additionally, Stainless Steel 321 Seamless Pipes offer superior resistance to oxidation at high temperatures, ensuring their durability in high heat conditions. Another unique property is their exceptional creep strength, which allows them to maintain their structural integrity even when exposed to prolonged periods of stress at elevated temperatures.

Stainless Steel 321H Seamless Pipes possess several key characteristics and properties that make them highly suitable for various demanding applications. One of their primary attributes is exceptional resistance to high-temperature environments, making them well-suited for applications where exposure to elevated temperatures is common. These pipes offer improved high-temperature strength compared to standard 321 stainless steel, allowing them to withstand thermal stress and cyclic heating. Moreover, stainless steel 321H seamless pipes exhibit excellent resistance to intergranular corrosion, making them suitable for applications involving exposure to corrosive environments and chemicals. They also demonstrate good weldability, enabling easy fabrication and installation processes.

Specification Of 321 Stainless Steel Seamless Pipe

Pipe Standard ASTM A312 ASME SA312
Seamless Pipe Dimension ANSI/ASME B36.19M, ANSI/ASME B36.10M
Seamless Pipe Sizes 1 / 2" NB - 24" NB
Seamless Pipe Outside Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Seamless Steel Pipe Manufacturing Process Seamless
Stainless Steel Seamless Pipe Shapes Hydraulic, Round, Rectangle, Square, Hex, Honed
Stainless Steel Seamless Pipe Schedule SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Seamless Pipe Ends Half Hard, Soft, Hard, Quarter Hard, Spring Hard
Delivery Condition Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Outside Finish 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Value Added Services Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing

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Types Of Stainless Steel 321 Seamless Pipes

Stainless Steel 321 Round Pipe

321 Stainless Steel Seamless Round Pipe

SS 321 Seamless Round Pipe, Stainless Steel 321 Seamless Round Pipe Supplier, Stainless Steel 321 Seamless Round Pipe Stockist.

Stainless Steel 321 Square Pipe

321 Stainless Steel Seamless Square Pipe

SS 321 Seamless Square Pipe, Stainless Steel 321 Seamless Square Pipe Supplier, Stainless Steel 321 Seamless Square Pipe Stockist.

Stainless Steel 321 Rectangular Pipe

321 Stainless Steel Rectangular Seamless Pipe

SS 321 Seamless Rectangular Pipe, Stainless Steel 321 Seamless Rectangle Pipe Supplier, Stainless Steel 321 Seamless Rectangular Pipe Stockist.

Stainless Steel 321 Polished Pipe

321 Stainless Steel Polished Seamless Pipe

SS 321 Polished Seamless Pipe, Stainless Steel 321 Seamless Polished Pipe Supplier, Stainless Steel 321 Seamless Polished Pipe Stockist.

Widest Range of 321H Stainless Steel Seamless Pipes in Mumbai, India.

  • Widest RangeSchedule XXS Stainless Steel 321 Seamless Pipe
  • Widest RangeStainless Steel 321 Electropolish Seamless Pipe
  • Widest RangeSchedule 40 Stainless Steel 321 Seamless Pipe
  • Widest Range321 SS Seamless Thin Wall Pipe
  • Widest RangeSchedule 10 Stainless Steel 321 Seamless Pipe
  • Widest RangeSchedule XS Stainless Steel 321 Seamless Pipe
  • Widest Range321/321H SS Seamless Pipe HSN Code
  • Widest RangeSchedule 80 Stainless Steel 321 Seamless Pipe
  • Widest RangeSchedule 5 Stainless Steel 321 Seamless Pipe
  • Widest RangeSchedule 160 Stainless Steel 321 Seamless Pipe
  • Widest RangeASME SA312 Stainless Steel 321 Seamless Pipe
  • Widest RangeStainless Steel 321H Seamless Round Pipe
  • Widest RangeASTM A312 Stainless Steel 321H Seamless Pipe
  • Widest Range321 Stainless Steel Rectangular Seamless Pipes
  • Widest RangeStainless Steel 321 Seamless Hollow Pipe
  • Widest RangeLarge Diameter Stainless Steel 321 Seamless Pipe
  • Widest Range321 Stainless Steel Hydraulic Seamless Pipe
  • Widest Range321 Stainless Steel Seamless Pipe Price 20 Feet
  • Widest RangeASME SA312 Stainless Steel 321H Seamless Pipe
  • Widest RangeASTM A312 Stainless Steel 321 Seamless Pipe

Check Stainless Steel 321 Pipes Types In Detail

321 Stainless Steel Seamless Pipes Equivalent Grades

STANDARD WERKSTOFF NR. UNS
SS 321 1.4541 S32100
SS 321H 1.4878 S32109

Schedule 10 321 Stainless Steel Seamless Pipe Pressure Rating, 16 Gauge 321 Stainless Steel Seamless Pipe, 321 Stainless Steel Seamless Pipe Sizes, 321H Stainless Steel Seamless Pipe Dimensions, Jindal 321 Stainless Steel Seamless Pipe, Stainless Steel 321 Seamless Pipe Exporter In India

321 / 321H Stainless Steel Seamless Pipes Price

Product Price
Custom Size 4 Inch SS 1.4541 Seamless Pipes Price US $ 1334 - 14043 / Ton
SS 1.4541 Square Seamless Pipe Price List US $ 32 - 35 / kg
ASTM A312 SCH 5S Plain End Stainless Steel 321 Seamless Pipe Price List $542.00 - $1,530.00/ Ton
S32100 Stainless Steel Seamless Pipe Price US $ 2140 - 4031 / Ton
Schedule 10 Stainless Steel 321H Seamless Pipes Price $1,8731.00 - $2,833.00/ Ton
Austenitic Stainless Steel 321 Seamless Pipe Price Per KG $1145.00 - $3240.00/ Ton
321 SS Seamless Pipe Price List $541 - 1444/ Ton
Stainless Steel S32109 Seamless Pipe Price US $ 1311 - 3041 / Ton
20mm Diameter Polished Stainless Steel 321H Seamless Pipes Price $854.10 - $1,340.00/ Ton

For Quotation & Questions Related To Stainless Steel 321 Seamless Pipes

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Stainless Steel 321 Seamless Pipe Manufacturing Process

Rolling and welding

Firstly, the stainless steel strips are made to gone through various quality checks and are trimmed at edges. They are then fed to the tubes mill by stainless steel pipe manufacturers in India. The strips pass through the number of rollers as per the required size. In the tubes-mill, the strip is gradually converted into the tubular shape. The fitted welding machine is then used to weld trim edges of the strip using TIG welding process. The scraps and inside weld bead are removed instantaneously by the Tibo machine. In this way, rolled pipes and tubes are formed.

The cleaning and heating phase

The rolled stainless steel seamless pipes thus manufactured are cut to the required lengths depending upon the industrial demand. These stainless pipes and tubes are then subjected to cleaning to remove the dirt. Further, a heat treatment is given to these rolled pipes and tubes to remove the stresses that may occur due to welding and formation processes. Heat treatment is given on the continuously rolling hearth furnace. The furnace is fitted with temperature recorders and controllers. After the heat treatment process, the SS tubes and pipes are straightened and subjected to pickling for removing scales from the surface.

Cold- drawing process

In some cases, the required size may not be obtained from the mill directly. Then, the cold operation process can be used to obtain the desired size. In cold drawing process, the tubes or pipes are coated with oxalic and soap solution. This solution acts as a lubricant to reduce friction while cold drawing operation. In the cold drawing process, the tube or pipe is drawn over the bench using Die plugs.

Finishing process

The drawn-out tube or ss pipe is then subjected to cleaning, heat treatment, pickling and straightening. The computerized ink jet marking machine is used to do the marking on the finished pipes or tubes. The pipe or tube is marked with grade of material, size, heat number and the stamp of third party inspection before passing on to stainless steel pipe exporters. The stainless tubes or pipes thus produced will undergo certain testing and quality checks. This process is followed by proper packing and dispatch. There are numerous numbers of stainless steel pipe applications, these pipes and tubes are used thereafter for.

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Chemical Composition Of Stainless Steel 321H Seamless Pipe

Grade Ni C Mn P S Si Cr Mo N TI
321 Max 12.00 0.08 2.00 0.045 0.030 1.00 19.0 3 – 4 0.10 max 0.70
Min 9.00 - - - - - 17.0 - - 5(C+N) 
321H Max 12.00 0.08 2.00 0.045 0.030 1.75 19.0 3 – 4 0.10 0.70
Min 9.00 0.04 - - - - 17.0 - - 4(C+N) 

Mechanical Properties Of 321 Stainless Steel Seamless Piping

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
321 515 205 40% 95 217
321H 515 205 40% 95 217

Testing & Inspection of 321 Stainless Steel Seamless Pipes

Testing (Destructive, Non Destructive)

Positive Material Identification – PMI Testing Hydrostatic Test
Chemical Analysis – Spectro Analysis Hydrogen-Induced Cracking (HIC) Test
Mechanical Testing Such as Tensile, Elongation, Reduction of Area Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
Micro Test Radiography Test
Macro Test Dye Penetrant Test (DP Test)
Hardness Test Ultra Sonic Test (UT)
Pitting Resistance Test Eddy Current Testing
Intergranular Corrosion (IGC) Test Impact Test
Flaring Test Bend Test
Flattening Test

Stainless Steel 321 / 321H Seamless Pipe Sizes in MM

Designation of Diameter O/D Nominal Wall Thickness
DIA SCH.5S SCH.5 SCH 10S SCH.10 SCH.20S SCH.30 SCH.40S SCH.40 SCH 60
(A) (B) Meter MM Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr Wall Thk Weight Kg/Mtr
6 1/8 10.3 1 0.23 1.2 0.27 1.5 0.33 1.73 0.37
8 1/4 13.7 1.2 0.37 1.65 0.49 2 0.58 2.24 0.64
10 3/8 17.2 1.2 0.47 1.65 0.63 2 0.74 2.31 0.87
15 1/2 21.3 1.65 0.01 1.65 0.81 2.11 1.02 2.11 1.02 2.5 1.15 2.77 1.29
20 3/4 26.7 1.65 1.03 1.65 1.03 2.11 1.3 2.11 1.3 2.5 1.49 2.87 1.71
25 1 33.4 1.65 1.31 1.65 1.31 2.77 2.13 2.77 2.13 3 2.24 3.38 2.54
32 11/4 24.2 1.65 1.67 1.65 1.67 2.77 2.73 2.77 2.73 3 2.9 3.56 3.44
40 11/2 48.3 1.65 1.93 1.65 1.93 2.77 3.16 2.77 3.16 3 3.35 3.68 4.11
50 2 60.3 1.65 1.93 1.65 2.42 2.77 3.99 2.77 3.99 3.5 4.9 3.91 5.52
65 21/2 73 2.11 3.75 2.11 3.75 3.05 5.34 3.05 5.34 3.5 6 5.16 8.77
80 3 88.9 2.11 4.59 2.11 4.59 3.05 6.56 3.05 6.56 4 8.37 5.49 11.47
90 31/2 101.6 2.11 5.25 2.11 5.25 3.05 7.53 3.05 7.53 4 9.62 5.74 13.78
100 4 114.3 2.11 5.93 2.11 5.93 3.05 8.5 3.05 8.5 4.5 12.18 6.02 6.32
125 5 141.3 2.77 9.61 2.77 9.61 3.4 11.74 3.43 11.74 5 16.8 6.55 2210
150 6 168.3 2.77 11.47 2.77 11.47 3.4 14.04 3.43 14.04 5.5 22.08 7.11 28.69
200 8 219.1 2.77 15 2.77 15 3.76 20.77 3.76 20.27 6.35 33.82 7.04 37.38 8.18 43.2 10.81 53.9
250 10 273.1 3.4 22.95 3.4 22.95 4.19 28.2 4.19 28.2 6.35 42.41 7.8 51.81 9.27 61.22 12.2 82.8
300 12 323.9 3.96 31.72 4.19 33.6 4.57 36.54 4.57 36.54 6.35 50.48 8.38 66.2 9.53 75.01 10.31 80.94 14.27 110.62
350 14 355.6 3.96 34.86 4.78 41.99 6.35 55.53 7.92 68.95 9.53 82.58 9.53 82.58 11.13 96 15.06 128.42
400 16 406.4 4.19 42.2 4.78 48.07 6.35 63.61 7.92 79.03 9.53 94.7 9.53 94.7 12.7 125.2 16.66 162.59
450 18 457.2 4.19 47.46 4.78 54.15 6.35 71.69 7.92 89.1 11.13 124.32 9.53 106.83 14.27 158.27 19.05 209
500 2C 508 4.78 60.23 5.54 69.7 6.35 79.76 9.53 118.93 12.7 157.51 9.53 118.9 15.06 185.89 2062 251.65
550 22 558.8 4.78 65.95 5.54 76.75 6.35 87.84 9.53 131.07 12.7 173.66 9.53 131.07 15.88 216.04 22.23 298.55
600 24 609.6 5.54 83.8 6.35 95.92 6.35 95.92 9.53 143.2 14.27 212.72 9.53 143.2 17.45 258.74 24.59 360.21
650 26 660.4 7.92 129.4 12.7 205.97 9.53 155.32
700 28 711.2 7.92 139.47 12.7 222.13 15.88 276.48 9.53 167.44
750 3C 762 6.35 120.15 7.92 149.55 7.92 149.55 12.7 238.28 15.88 296.68 9.53 179.56
800 32 812.8 7.92 159.62 12.7 254.44 15.88 321.88 9.53 191.69 17.48 348.11
850 34 863.6 7.92 169.64 12.7 270.5 15.88 336.96 9.53 203.74 17.48 370.22
900 36 914.4 7.92 179.77 12.7 286.75 15.88 357.28 9.53 215.93 19.05 427.09

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Supply Cities Of Stainless Steel 321 And 321H Seamless Pipes

The cities listed here are where we have supplied our grade 321H stainless steel seamless pipes in bulk or small orders. Cities from metropolitan to rural areas we can provide SS 321 seamless pipes to satisfy the needs of our clients.

Navi Mumbai, Milan, Melbourne, Ahmedabad, Atyrau, Santiago, Riyadh, Kanpur, Bhopal, Ankara, Vadodara, Mexico City, Tehran, Kuwait City, New Delhi, Busan, Ludhiana, Ho Chi Minh City, Coimbatore, Hyderabad, Caracas, Rajkot, Courbevoie, Hanoi, Jamshedpur, Montreal, Seoul, Geoje-si, Thane, Bogota, Faridabad, Karachi, Ulsan, Sharjah, Cairo, Bengaluru, Jakarta, Kolkata, Chennai, Singapore, Edmonton, Dallas, Haryana, Perth, Abu Dhabi, Mumbai, Vung Tau, Pune, Moscow, Doha, Port-of-Spain, Rio de Janeiro, Lahore, Thiruvananthapuram, Ranchi, New York, Sydney, Dubai, Surat, Gimhae-si, Lagos, Muscat, Chandigarh, Al Khobar, Ernakulam, Ahvaz, Calgary, Howrah, Secunderabad, Kuala Lumpur, Nashik, Hong Kong, Brisbane, Chiyoda, Pimpri-Chinchwad, Al Jubail, Nagpur, Granada, Madrid, Dammam, Gurgaon, Jeddah, Algiers, Colombo, Los Angeles, Istanbul, Aberdeen, Houston, Visakhapatnam, Mumbai, London, Jaipur, Petaling Jaya, Bangkok, Baroda, Indore, Toronto, Manama, Noida, La Victoria.

Documents Provided at the time of Domestic Sales or Export of 321/321H Stainless Steel Seamless Pipes

Certificate of Origin Raw Material Test Reports
Commercial Invoice Heat Treatment Charts
Packing List Quality Assurance Plan (QAP)
Fumigation Certificates NABL approved Laboratory Test Reports
Letter of Guarantee Material Test Certificates
ROHS Certificate Certificate of Compliance/Conformity

Application Industries We Supply Stainless Steel 321 Seamless Pipes

321 Stainless Steel Seamless Pipes For Manufacturing, 321H Stainless Steel Seamless Pipes For Production, Stainless Steel 321 Seamless Pipes For Technology, 321 Stainless Steel Seamless Pipes For Agriculture, 321 Stainless Steel Seamless Pipes For Factory, 321 Stainless Steel Seamless Pipes For Food Industry, 321H Stainless Steel Seamless Pipes For Tertiary Sector, Stainless Steel 1.4541 Pipes For Construction, 321 Stainless Steel Seamless Pipes For Chemical Industry, Stainless Steel 1.4878 Seamless Pipes For Waste, UNS S32100 Seamless Pipes For Mining, 321 Stainless Steel Seamless Pipes For Energy, 321H Stainless Steel Seamless Pipes For Pharmaceutical Industry, 321 Stainless Steel Seamless Pipes For Transport, Stainless Steel 321H Seamless Pipes For Real Estate, Stainless Steel 1.4541 Seamless Pipes For Textile Industry, UNS S32109 Seamless Pipes For Engineering, 321 Stainless Steel Seamless Pipes For Electronics, 321 SS Seamless Pipes For Health care, 321 Stainless Steel Seamless Pipes For Pulp and Paper Industry, 321H Stainless Steel Seamless Pipes For Rail Transport.

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