Stainless Steel 321 Pipe Supplier
We at Multinox Inc are leading manufacturer, stockists & suppliers of high-quality TP 321 Stainless Steel Pipes & Tubes which find application across diverse sectors. These stainless steel pipes & tubes are smoothly produced by using standard raw materials. We manufacture in both SS 321 Seamless / Welded Pipes & Tubes of different sizes, wall thickness, and specifications as per the customer requirement.
Due to its excellent corrosion resistance, it has been used in handling many of the chemicals used by the chemical process industries. We offer top quality that is being designed as per the national and international standard quality of raw materials. Stainless Steel 321 pipes and tubes are accessible in both OD and NB sizes.
Over 40 years, we supply top quality Alloy 321 Pipes & Tubes to various industries like Mining, Oil Refineries, Chemical Industries, Utilities & Transportation, Petrochemical, Pulp and Paper, Transportation and many other industries. Contact us today to request a free estimate or send an enquiry with your specific requirement.
Available Forms & Types
Most Common
Round Bars
Cold drawn, centreless ground & polished. Used in shafts, fasteners, machined components.
- OD: 4mm to 500mm
- Bright / Polish / Black finish
- Length: 1–6 metres
Precision
Hex Bars
Across-flat 18mm–57mm. Ideal for bolt, nut & valve body machining applications.
- 18mm – 57mm A/F
- Cold drawn condition
- Non-magnetic grade
Structural
Square Bars
Used in structural fabrication, tooling and engineering. Custom sizes available.
- 18mm – 47mm
- Bright / Rough Turned
- Custom sizes on request
Wide Range
Flat Bars
Width ½" to 10", thickness 2mm to 150mm. Sheared & edged or hot-rolled condition.
- Width: ½" to 10"
- Thickness: 2–150mm
- Custom width available
Hollow
Hollow Bars
Seamless hollow bar for bushings, sleeves & valve bodies. Saves machining time.
- OD: 4mm to 100mm
- Various wall thickness
- Centreless ground
High Strength
Forged Bars
Hot forged for superior grain structure. Heavy-duty industrial and aerospace use.
- 15mm to 300mm
- Ultrasonic tested
- Rough turned finish
Specifications
| Standard | ASTM A312 / ASME SA312 |
| Type | Seamless, Welded (ERW, EFW, SAW), Fabricated |
| Seamless Pipe Size | 1/8″ – 12″ NPS, Wall Thickness: 0.6 – 12.7 mm |
| Welded Pipe Size | OD: 6.35 – 114.3 mm, Length: Up to 26 m |
| Heavy Wall Pipe Size | OD: 10 – 600 mm, Wall Thickness: 2.5 – 100 mm |
| Schedule | 5S, 10S, 40S, 80S, 100, 120, 140, 160, XXH |
| Form | Round, Square, Rectangular, Oval |
| Finish | Bright, Annealed, Mirror, Polished |
| End | Plain End, Beveled End |
| Testing | UT, RT, MT, PT, ET, PMI, Visual Inspection |
| Certifications | ISO 9001, ISO 14001, OHSAS 18001, PED, NORSOK |
| HSN Code | 73044900 |
Chemical Composition
Ni
9.0 – 12.0
Nickel
C
0.08 Max
Carbon
Mn
2.00 Max
Manganese
P
0.045 Max
Phosphorus
S
0.03 Max
Sulfur
Si
0.75 Max
Silicon
N
0.10 Max
Nitrogen
Cr
17.0 – 19.0
Chromium
Equivalent Grades
STANDARD
SS 321
Material Grade
W.NR.
1.4541
Werkstoff Number
UNS
S32100
UNS Number
JIS
SUS 321
Japanese Standard
EN
X6CrNiTi18-10
European Standard
Mechanical Properties
205 MPa Min
Yield Strength
40% Min
Elongation
515 MPa Min
Ultimate Tensile Strength
95 HRB Max
Hardness (Rockwell B)
217 HB Max
Hardness (Brinell)
Recent Export Deliveries
🇸🇦
Saudi Aramco Total
Al Jubail, Saudi Arabia
304 SS Round Bars, 50mm OD, ASTM A276
Delivered in 7 days
🇺🇸
Hess Corporation
New York City, USA
SS 304 Hex Bars, 40mm A/F, Cold Drawn
Delivered in 14 days
🇬🇧
Shell PLC
London, United Kingdom
304 SS Flat Bars, 100×20mm, Bright Finish
Delivered in 14 days
🇦🇪
ADNOC
Abu Dhabi, UAE
304 SS Square Bars, 40mm, Forged Grade
Delivered in 5 days
🇿🇦
Sasol Limited
Johannesburg, South Africa
SS 304 Hollow Bars, 80mm OD × 20mm wall
Delivered in 21 days
🇩🇪
BASF SE
Ludwigshafen, Germany
304 SS Round Bars 25–100mm, EN 10204 3.2
Delivered in 18 days
Availability of Stainless Steel Pipes
| Stainless Steel 304 Pipe | Stainless Steel 304L Pipe |
| Stainless Steel 316 Pipe | Stainless Steel 316L Pipe |
| Stainless Steel 316Ti Pipe | Stainless Steel 310 Pipe |
| Stainless Steel 317L Pipe | Stainless Steel 321 Pipe |
| Stainless Steel 347 Pipe | Stainless Steel 347H Pipe |
| Stainless Steel 410 Pipe | Stainless Steel 416 Pipe |
| Stainless Steel 420 Pipe | Stainless Steel 430 Pipe |
| Stainless Steel 440 Pipe | Stainless Steel 440C Pipe |
| Stainless Steel 446 Pipe | Stainless Steel S44600 Pipe |
| Stainless Steel EN 1.4749 Pipe | Stainless Steel 17-4PH Pipe |
| Stainless Steel 15-5PH Pipe |
Latest Prices of Pipes
Multinox INC offers Pipes at one of the most competitive prices in India. Request the latest Pipes Pricelist using the contact form here.