Custom Stainless Steel Rings & Circles – Certified ISO 9001:2015 Quality. Multiple Surface Finishes Including BA, 2B, Satin. Available in SS Grades 304, 304L, 316, 316L, 310, 321, 904L with Full Dimensional Flexibility.
We are a leading manufacturer, supplier, and exporter of premium Stainless Steel Circles & Rings. Manufactured using high-quality stainless steel, our products are available in various grades including SS 304, SS 316, SS 310, SS 321, and others. These components are known for their outstanding corrosion resistance, high mechanical strength, and long-lasting durability, making them suitable for a wide range of industrial and structural applications. Stainless Steel Circles & Rings are widely used in sectors such as fabrication, flanges, pressure vessels, heat exchangers, petrochemicals, and heavy engineering components.
Our Stainless Steel Circles & Rings come in a variety of types including plain discs, forged rings, laser-cut rings, blank circles, and profile-cut shapes. We offer customized sizes with thicknesses ranging from 1mm to 100mm and diameters from 50mm to 1500mm or more, tailored to meet specific project needs. These products are manufactured in accordance with ASTM A240 and other relevant international standards, and are ISO 9001:2015 and PED certified. We also provide cut-to-size solutions to ensure precision for diverse applications.
Our Stainless Steel Circles & Rings are produced using advanced forging, hot rolling, and CNC profile cutting methods to achieve dimensional accuracy and a consistent surface finish. We also employ advanced finishing techniques including annealing, polishing, and pickling to enhance durability and aesthetic value. These components are capable of withstanding high pressure, extreme temperatures, and corrosive environments, making them ideal for critical applications in industries like oil & gas, power generation, and chemical processing.
By integrating modern machinery and strict quality control measures, we ensure that every stainless steel circle or ring meets the highest quality benchmarks. From structural parts to high-performance components, our stainless steel circles and rings deliver superior strength, reliable performance, and long service life across all demanding conditions.
Stainless Steel Circles & Ring Types – Including Flange Rings, Round Blanks, Laser-Cut Washers, and Profile Rings for Gaskets & Machinery Components. Available in Multiple Grades and Finishes with Customized OD, ID, and Thickness Options.
Stainless Steel Circles & Rings Specifications
| Property | Specification |
|---|---|
| Material Grade | 304, 304L, 316, 316L, 310S, 321, 347, 410, 420, 430, 904L |
| Thickness | 0.3 mm – 150 mm |
| Diameter | Custom sizes, commonly 100 mm to 3000 mm (or larger) |
| Tolerance | ±0.5 mm to ±2 mm depending on the size and grade |
| Surface Finish | Mirror, Matt, Satin, Polished, 2B, 8K |
| Edge Type | Smooth, Burr-free, Slit, Sheared |
| Hardness | HRB: 80–95 (depends on material grade and thickness) |
| Corrosion Resistance | High (varies by grade, higher in 316/2205, lower in 410/430) |
| Applications | Gaskets, washers, flanges, seals, automotive, aerospace, cookware |
| Yield Strength | 205 – 550 MPa (varies by material grade and thickness) |
| Ultimate Tensile Strength | 505 – 850 MPa (varies by material grade and thickness) |
| Forming Type | Cold formed, Hot rolled, Laser cut, Water jet cut |
| Packaging | Shrink wrapped, Wooden crates, Palletized for safe delivery |
Types of Stainless Steel Circles & Rings
Blank Circles / Discs
Supplied in custom diameters and thicknesses as per client specifications.
Flange Rings
Rings used as components for flanges in piping systems, pressure vessels, etc.
Gasket Rings
Gasket Rings are Available in standard and custom sizes as per ASME or DIN specifications.
Spacer Rings
Rings used to maintain space between mechanical parts commonly used in equipment.
Washer Rings
Smaller rings used as washers for load distribution under bolts and nuts.
Split Rings
C-shaped or snap-fit rings used to hold assemblies in grooves or shafts.
Profile Cut Rings
Custom-shaped rings cut from plates using CNC, laser, or waterjet, for specific machinery.
Forged Rings
Heavy-duty rings forged for strength, used in aerospace, marine industry or heavy machinery.
Equivalent of Stainless Steel Circles
| Grade | ASTM | UNS | WNR | JIS | EN | BS |
|---|---|---|---|---|---|---|
| 405 | ASTM A276 | S40500 | 1.4002 | SUS 405 | EN 10088-3 | – |
| 409 | ASTM A276 | S40900 | 1.4512 | SUS 409 | EN 10088-3 | – |
| 409L | ASTM A276 | S40910 | 1.4510 | SUS 409L | EN 10088-3 | – |
| 410 | ASTM A276 | S41000 | 1.4006 | SUS 410 | EN 10088-3 | – |
| 410S | ASTM A276 | S41008 | 1.4000 | SUS 410S | EN 10088-3 | – |
| 420 | ASTM A276 | S42000 | 1.4021 | SUS 420 | EN 10088-3 | – |
| 430 | ASTM A276 | S43000 | 1.4016 | SUS 430 | EN 10088-3 | – |
| 430F | ASTM A276 | S43020 | 1.4104 | SUS 430F | EN 10088-3 | – |
| 434 | ASTM A276 | S43400 | 1.4113 | SUS 434 | EN 10088-3 | – |
| 436 | ASTM A276 | S43600 | 1.4510 | SUS 436 | EN 10088-3 | – |
| 439 | ASTM A276 | S43932 | 1.4510 | SUS 439 | EN 10088-3 | – |
| 441 | ASTM A276 | S44100 | 1.4509 | SUS 441 | EN 10088-3 | – |
| 444 | ASTM A276 | S44400 | 1.4521 | SUS 444 | EN 10088-3 | – |
| 15-5 PH | ASTM A564 | S15500 | 1.4545 | – | EN 10088-3 | – |
| 17-4 PH | ASTM A564 | S17400 | 1.4542 | – | EN 10088-3 | – |
| 17-7 PH | ASTM A564 | S17700 | 1.4568 | – | EN 10088-3 | – |
| 13-8 MO | ASTM A564 | S13800 | 1.4534 | – | EN 10088-3 | – |
| 301 | ASTM A276 | S30100 | 1.4310 | SUS 301 | EN 10088-3 | – |
| 302 | ASTM A276 | S30200 | 1.4319 | SUS 302 | EN 10088-3 | – |
| 303 | ASTM A276 | S30300 | 1.4305 | SUS 303 | EN 10088-3 | – |
| 304 | ASTM A276 | S30400 | 1.4301 | SUS 304 | EN 10088-3 | – |
| 304L | ASTM A276 | S30403 | 1.4307 | SUS 304L | EN 10088-3 | – |
| 304H | ASTM A276 | S30409 | 1.4948 | – | EN 10088-3 | – |
| 309 | ASTM A276 | S30900 | 1.4828 | SUS 309 | EN 10088-3 | – |
| 309S | ASTM A276 | S30908 | 1.4833 | SUS 309S | EN 10088-3 | – |
| 310 | ASTM A276 | S31000 | 1.4841 | SUS 310 | EN 10088-3 | – |
| 310S | ASTM A276 | S31008 | 1.4845 | SUS 310S | EN 10088-3 | – |
| 316 | ASTM A276 | S31600 | 1.4401 | SUS 316 | EN 10088-3 | – |
| 316L | ASTM A276 | S31603 | 1.4404 | SUS 316L | EN 10088-3 | – |
| 316H | ASTM A276 | S31609 | 1.4919 | – | EN 10088-3 | – |
| 316Ti | ASTM A276 | S31635 | 1.4571 | SUS 316Ti | EN 10088-3 | – |
| 317 | ASTM A276 | S31700 | 1.4449 | SUS 317 | EN 10088-3 | – |
| 317L | ASTM A276 | S31703 | 1.4438 | SUS 317L | EN 10088-3 | – |
| 321 | ASTM A276 | S32100 | 1.4541 | SUS 321 | EN 10088-3 | – |
| 321H | ASTM A276 | S32109 | 1.4878 | – | EN 10088-3 | – |
| 347 | ASTM A276 | S34700 | 1.4550 | SUS 347 | EN 10088-3 | – |
| 347H | ASTM A276 | S34709 | 1.4961 | – | EN 10088-3 | – |
| 904L | ASTM A276 | N08904 | 1.4539 | SUS 904L | EN 10088-3 | – |
Chemical Composition of SS Rings
| Grade | C (Max) | Mn (Max) | Si (Max) | P (Max) | S (Max) | Cr | Ni | Mo | N (Max) | Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|
| 301 | 0.15 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0-18.0 | 6.0-8.0 | – | 0.10 | – |
| 302 | 0.15 | 2.00 | 1.00 | 0.045 | 0.030 | 17.0-19.0 | 8.0-10.0 | – | – | – |
| 303 | 0.15 | 2.00 | 1.00 | 0.20 | 0.15 | 17.0-19.0 | 8.0-10.0 | – | – | S: 0.15 min |
| 304 | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 18.0-20.0 | 8.0-10.5 | – | – | – |
| 304L | 0.03 | 2.00 | 0.75 | 0.045 | 0.030 | 18.0-20.0 | 8.0-12.0 | – | – | – |
| 310 | 0.25 | 2.00 | 1.50 | 0.045 | 0.030 | 24.0-26.0 | 19.0-22.0 | – | – | – |
| 316 | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | – | – |
| 321 | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0-19.0 | 9.0-12.0 | – | – | Ti: 5xC min, 0.7 max |
| 904L | 0.02 | 2.00 | 1.00 | 0.045 | 0.035 | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | – | Cu: 1.0-2.0 |
| 15-5 PH | 0.07 | 1.00 | 1.00 | 0.035 | 0.030 | 15.0-17.0 | 3.0-5.0 | 0.2-0.6 | – | Nb+Ta 0.15 max |
| 17-4 PH | 0.07 | 1.00 | 1.00 | 0.035 | 0.030 | 15.0-17.0 | 3.0-5.0 | 0.2-0.6 | – | – |
Mechanical Properties of SS Circles & Rings
| Grade | Tensile Strength (MPa) | Yield Strength (0.2% Proof) (MPa) | Elongation (%) | Hardness (HB Max) |
|---|---|---|---|---|
| 301 | 515-760 | 205 | 40 | 217 |
| 302 | 620 | 275 | 40 | 201 |
| 303 | 620 | 240 | 35 | 212 |
| 304 | 515-750 | 205 | 40 | 201 |
| 304L | 485 | 170 | 40 | 201 |
| 310 | 515 | 205 | 40 | 217 |
| 316 | 515-700 | 205 | 40 | 217 |
| 321 | 515-700 | 205 | 40 | 217 |
| 904L | 490-690 | 220 | 35 | 192 |
| 15-5 PH | 930 | 790 | 10 | 331 |
| 17-4 PH | 930 | 785 | 12 | 363 |
Dimension Chart of SS Circles
| Nominal Sizes in (Inch) | 19 Gauge | 24 Gauge | 22 Gauge | 20 Gauge | 18 Gauge | 26 Gauge |
|---|---|---|---|---|---|---|
| .4.5″ | 0 – 085 | 0.049 | 0 – 062 | 0 – 080 | .0 – 107 | 0 – 040 |
| 9″ | 0 – 330 | 0 – 178 | 0 – 230 | 0 – 301 | 0 – 388 | 0 – 145 |
| 6.5″ | 0 – 153 | 0 – 093 | 0 – 128 | 0 – 150 | 0 – 200 | 0 – 074 |
| 7″ | 0 – 190 | 0 – 107 | 0 – 136 | 0 – 176 | 0 – 235 | 0 – 088 |
| 8″ | 0 – 240 | 0 – 140 | 0 – 180 | 0 – 230 | 0 – 307 | 0 – 115 |
| 15″ | 0 – 860 | 0 – 495 | 0 – 650 | 0 – 808 | 1 – 080 | 0 – 405 |
| 10″ | 0 – 380 | 0 – 220 | 0 – 280 | 0 – 360 | 0 – 480 | 0 – 180 |
| 12″ | 0 – 540 | 0 – 318 | 0 – 403 | 0 – 518 | 0 – 690 | 0 – 253 |
| 14″ | 0 – 750 | 0 – 430 | 0 – 558 | 0 – 708 | 0 – 940 | 0 – 352 |
| 16″ | 0 – 960 | 0 – 563 | 0 – 736 | 0 – 921 | 1 – 228 | 0 – 460 |
| 18″ | 1 – 200 | 0 – 712 | 0 – 907 | 1 – 116 | 1 – 595 | 0 – 683 |
| 5.5″ | 0 – 119 | 0 – 066 | 0 – 085 | 0 – 109 | 0 – 146 | 0 – 054 |
| 11″ | 0 – 450 | 0 – 266 | 0 – 338 | 0 – 435 | 0 – 580 | 0 – 218 |
| 13″ | 0 – 640 | 0 – 371 | 0 – 608 | 0 – 508 | 0 – 811 | 0 – 304 |
| 7.5″ | 0.212 | 0 – 123 | 0 – 157 | 0.201 | 0.270 | 0 – 100 |
| 5″ | 0 – 095 | 0 – 055 | 0 – 070 | 0 – 090 | 0 – 120 | 0 – 045 |
| 20″ | 1 – 400 | 0 – 880 | 1 – 120 | 1 – 340 | 1 – 920 | 0 – 785 |
| 8.5″ | 0 – 270 | 0 – 156 | 0 – 202 | 0 – 262 | 0 – 347 | 0 – 130 |
| 17″ | 1 – 080 | 0 – 635 | 0 – 809 | 0 – 940 | 1 – 382 | 0 – 560 |
| 6″ | 0 – 136 | 0 – 079 | 0 – 100 | 0 – 130 | 0 – 172 | 0 – 064 |
| 9.5″ | 0 – 342 | 0 – 198 | 0 – 252 | 0 – 324 | 0 – 472 | 0 – 162 |
| 19″ | 1 – 350 | 0 – 794 | 1 – 010 | 1 – 300 | 1 – 732 | 0 – 750 |
Stainless Steel Rings Weight Chart
| Diameter (mm) | Thickness (mm) | Weight (kg) |
|---|---|---|
| 100 | 0.5 | 0.35 |
| 150 | 0.8 | 0.90 |
| 200 | 1.0 | 1.57 |
| 250 | 1.2 | 2.45 |
| 300 | 1.5 | 3.93 |
| 350 | 2.0 | 5.99 |
| 400 | 2.5 | 8.73 |
| 450 | 3.0 | 11.83 |
| 500 | 3.5 | 15.38 |
| 600 | 4.0 | 21.25 |
| 700 | 5.0 | 30.43 |
| 800 | 6.0 | 40.80 |
| 900 | 8.0 | 63.62 |
| 1000 | 10.0 | 88.25 |
| 1200 | 12.0 | 127.47 |
| 1500 | 15.0 | 196.35 |
Worldwide Supply of SS Circles & Rings
Russia, Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates (UAE), Yemen, United States of America (USA), Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom, Vatican City.
