What are the typical applications for stainless steel 321 / 321H large-diameter pipes?

Stainless Steel 321 / 321H Large-Diameter Pipes find a wide range of applications across various industries due to their unique properties and capabilities. These pipes are commonly used in high-temperature environments where corrosion resistance and strength are crucial. One of the primary applications is in the petrochemical industry, where these pipes transport corrosive fluids and gases at elevated temperatures.

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They are also extensively utilized in power generation for conveying steam and other high-temperature fluids in power plants. Additionally, stainless steel 321 / 321H large-diameter pipes are widely employed in the chemical processing industry, oil and gas refineries, and aerospace industry due to their exceptional resistance to oxidation, high thermal stability, and excellent weldability. Other applications include heat exchangers, furnace components, boiler tubes, and various structural and mechanical systems where durability and reliability are paramount.

What are the advantages of using large-diameter stainless steel 321 / 321H pipes?

Large-diameter pipes made from stainless steel 321 offer several advantages that make them highly desirable in various applications. Stainless steel 321 provides excellent resistance to corrosion, particularly in high-temperature environments, making it suitable for industries such as petrochemicals, power generation, and chemical processing. Additionally, these pipes possess unique mechanical properties, including high strength and good formability, allowing for their use in demanding conditions. Stainless steel 321 is also known for its exceptional weldability, enabling easy fabrication and installation of large-diameter pipes.

Large-diameter pipes made from stainless steel 321H offer several advantages that make them highly beneficial in various industrial applications. One key advantage is the enhanced high-temperature strength and stability by adding higher carbon content in Stainless Steel 321H compared to 321. That makes 321H pipes particularly suitable for elevated temperatures and thermal cycling applications. Additionally, stainless steel 321H exhibits excellent resistance to sensitization and intergranular corrosion, making it ideal for applications where exposure to corrosive environments is a concern.

Specification Of 321 Stainless Steel Large Diameter Pipe

Large Diameter Pipe Standard ASTM A312 ASME SA312 / ASTM A358 ASME SA358
Large Diameter Pipe Dimension ANSI/ASME B36.19M, ANSI/ASME B36.10M
Large Diameter Pipe Sizes 16" NB - 204" NB
Large Diameter Pipe Outside Diameter 16" - 120" for spiralweld pipe
36" - 204" for rolled & welded pipe
Steel Large Diameter Pipe Manufacturing Process Seamless / Welded / ERW / Fabricated / EFW / 100% X Ray Welded
Large Diameter Pipe Wall thickness 0.25" - 1" for spiralweld pipe
0.375" - 2.25" for rolled & welded pipe
Stainless Steel Large Diameter Pipe Schedule SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Large Diameter 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 Large Diameter Pipes

Stainless Steel 321 Large Diameter Round Pipe

321 SS Large Diameter Round Pipe

SS 321 Large Diameter Round Pipe, Stainless Steel 321H Large Diameter Round Pipe Supplier, Stainless Steel 321 Large Diameter Round Pipe Stockist.

Stainless Steel 321 Spiral Welded Large Diameter Pipe

321 SS Spiral Welded Large Diameter Pipe

SS 321 Spiral Welded Large Diameter Pipe, Stainless Steel 321 Spiral Welded Large Diameter Pipe Supplier, Stainless Steel 321H Spiral Welded Large Diameter Pipe Stockist.

Stainless Steel 321 Rolled & Welded Large Diameter Pipe

321 SS Rolled & Welded Large Diameter Pipe

SS 321 Rolled & Welded Large Diameter Pipe, Stainless Steel 321H Rolled & Welded Large Diameter Pipe Supplier, Stainless Steel 321 Rolled & Welded Large Diameter Pipe Stockist.

Stainless Steel 321 Coated Large Diameter Pipe

321 SS Coated Large Diameter Pipe

SS 321H Fusion Bonded Epoxy (FBE) Coated Large Diameter Pipe, Stainless Steel 321 Abrasion Resistant Overcoat (ARO) Coated Large Diameter Pipe Supplier, Stainless Steel 321H Coated Large Diameter Pipe Stockist.

Widest Range of 321-321H Stainless Steel Large Diameter Pipes in Mumbai, India.

  • Widest Range321 Stainless Steel Laser Welded Large Diameter Pipe
  • Widest RangeSS 321 Submerged Arc Welding (LSAW) Large Diameter Pipe
  • Widest RangeFusion Bonded Epoxy (FBE) SS 321 Large Diameter Pipe
  • Widest RangeASTM A312 Stainless Steel 321 Large Diameter Pipe
  • Widest Range610 mm (24”) Stainless Steel 321 Large Diameter Pipe
  • Widest RangeSpiral Welded Stainless Steel 321 Large Diameter Pipe
  • Widest Range321 SS Electric Fusion Welding Large Diameter Pipe
  • Widest Range1422 mm (56”) Stainless Steel 321 Large Diameter Pipe
  • Widest Range321 Stainless Steel EFW Pipe
  • Widest Range321 Stainless Steel Galvanized Large Diameter Pipe
  • Widest Range910 mm (36”) Stainless Steel 321 Large Diameter Pipe
  • Widest RangeASTM A312 Stainless Steel 321H Large Diameter Pipe
  • Widest RangeAbrasion Resistant Overcoat (ARO) SS 321 Large Diameter Pipe
  • Widest RangeASME SA312 Stainless Steel 321H Large Diameter Pipe
  • Widest RangeASME SA312 Stainless Steel 321 Large Diameter Pipe
  • Widest Range1219 mm (48”) Stainless Steel 321 Large Diameter Pipe

Check Stainless Steel 321/321H Pipes Types In Detail

321 Stainless Steel Large Diameter Pipes Equivalent Grades

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

Stainless Steel 321 Large Bore Pipe, Jindal 321 Stainless Steel Large Diameter Pipe, 321 Stainless Steel Large Diameter Pipe Manufacturers In India, 321H Stainless Steel Big Diameter Pipe, Stainless Steel 321 Large Diameter Pipe Exporter In India

321 Stainless Steel Large Diameter Pipes Price

Product Price
SS 1.4541 Large Diameter Pipe Price List US $ 35 - 34 / kg
Custom Size SS 1.4878 Large Diameter Pipes Price US $ 1722 - 14344 / Ton
S32100 Stainless Steel Large Diameter Pipe Price US $ 1239 - 13384 / Ton
Austenitic Stainless Steel 321 Large Diameter Pipe Price Per KG $1414.00 - $2640.00/ Ton
321 SS Large Diameter Pipe Price List $922 - 1624/ Ton
Schedule 10 Stainless Steel 321H Large Diameter Pipes Price $1,124.00 - $5,759.00/ Ton
Stainless Steel S32109 Large Diameter Pipe Price US $ 1275 - 8374 / Ton
Polished Stainless Steel 321H Large Diameter Pipes Price $1055.00 - $6,744.00/ Ton
ASTM A312 Plain End Stainless Steel 321 Large Diameter Pipe Price List $1327.00 - $8,640.00/ Ton

For Quatation & Questions Related To Stainless Steel 321 Large Diameter Pipes

Avoid those problems that occur with low-quality stainless steel 321 Large Diameter pipes by getting high-quality stainless steel 321 Large Diameter pipes at competitive prices from us. Give us a call or send us an email to discuss how we can help you build your business. Working with such an esteemed client as you will make us happy.

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Stainless Steel 321 Large Diameter Pipe Manufacturing Process

Forming

According to the name, the plate is bent into a "U" and then a "O" in succession. The lowering of the die starts the process of forming in the U-ing press. The side rollers move the crimped plate in the direction of the die. The O-ing press is then used to mould the U-shaped plate into a slit pipe. Working at up to 60,000 tonnes of pressure, this is precision work.

Two lower rolls and one higher roll bend the plate to the appropriate radius during the three-roll bending procedure. Different top roll diameters are employed, depending on the steel grade and necessary pipe diameter. Afterward, the crimping machine rounds the created edges.

Tack welding of the slit pipe

The open edges of the slit pipe are tacking welded together in shielding gas prior to submerged-arc welding. Frames (roller cages) are used for this, which precisely position the edges and prevent misalignment. Additionally, the continuous tack weld keeps the weld pool in place for subsequent submerged arc welding.

Pipe identification

material tracking throughout the entire production process. For identification each pipe is marked with a pipe production number. Additionally a line, marking the centre of the pipe, is the reference for late non-destructive testing of the weld seam.

Inside and outside welding

Two passes are used to attach the longitudinal edges. At the pipe ends, run-on and run-off tabs are positioned to stabilise the electric arc at the start and end of the welding process.

Outside welding is done after the inside welding has been completed. The tack weld pass has fused entirely. Up to five welding wires can be positioned in a line behind one another during submerged-arc multi-wire welding. Welding wire and flux, amperage, voltage, welding speed, wire spacing, wire diameter, the angle of the wires in relation to one another and the weld groove, as well as flux height and width, all affect how consistently good a weld is. A welding data monitoring system enables online manufacturing process monitoring.

X-ray weld inspection / Filmless radiography

Each seam is first visually inspected from the inside out. In addition to X-ray and manual ultrasonic testing, our internal quality checks also involve ultrasonic inspection of the whole seam.

When compared to traditional film-based approaches, the use of automatic picture evaluation software and image processing capabilities considerably increases the reliability of inspection and detection. Any ultrasonic signals are automatically and precisely verified. We take pride in being the only manufacturer of large-diameter pipes to use digital technology for all radiography examinations. We streamline the inspection procedure, record the findings, and keep track of any deviations for later follow-up.

Stainless Steel 321 Large Diameter Pipes, Stainless Steel 321H Large Diameter Pipe Stockist, Stainless Steel 321 Large Diameter Pipe Stockist, Stainless Steel 321 Large Diameter Pipe Suppliers, Stainless Steel 321H Large Diameter Pipe Suppliers, SS 321 Large Diameter Pipes, UNS S32100 Large Diameter Pipe, Stainless Steel 321H Large Diameter Pipe Exporter, Stainless Steel 321H Large Diameter Pipes.

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Chemical Composition Of Stainless Steel 321H Large Diameter 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 Large Diameter 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 Large Diameter Pipes

Testing (Destructive, Non Destructive)

Pitting Resistance Test Eddy Current Testing
Hardness Test Ultra Sonic Test (UT)
Flaring Test Bend Test
Intergranular Corrosion (IGC) Test Impact 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
Positive Material Identification – PMI Testing Hydrostatic Test
Micro Test Radiography Test
Macro Test Dye Penetrant Test (DP Test)
Flattening Test

Stainless Steel 321H Large Diameter 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 15.88 316.88 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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Feel Proud To Export Our High Quality SS 321 Large Diameter Pipes World Wide.

We have exported and supplied our 321 Stainless Steel Large Diameter Pipes to solve piping related problems of our prestigious domestic and worldwide clients. We appreciate your business and the confidence you have placed in us.

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Supply Cities Of Stainless Steel 321 And 321H Large Diameter Pipes

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

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

Documents Provided at the time of Domestic Sales or Export of 321 Stainless Steel Large Diameter Pipes

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

Application Industries We Supply Stainless Steel 321 Large Diameter Pipes

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

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