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- Our Processing Vedio
The Processing of stainless steel
Walmay Metal’s annual sales volume exceeds 300,000 tons, with more than 800 varieties and specifications. The cooperative factory has advanced equipment, including laser cutting machines, flying shears, wire drawing machines, polishing machines, folding machines, etc.
- STAINLESS STEEL POLISHING
- STAINLESS STEEL PROTECTION
- Stainless Steel Slitting
- Stainless Steel Shearing
- QUALIFICATION TESTING
- Stainless Steel Packing
Contact Us If You Need More Information
We can provide any type of finishing and fabrication, stainless steel, and supply all kinds of steel structure building materials SS304, SS316, 430, Duplex stainless steel, etc.
Walmay -Sheets, Coils, Strips Catelog PDF
Walmay Metal can cut it to the size you need and provide various grades,diameters,and thicknesses.
Walmay - Pipe, Fittings Catalog PDF
Walmay Metal can cut it to the size you need and provide various grades,diameters,and thicknesses.
Walmay - Rod, Wire, Profile Catalog PDF
Walmay Metal can cut it to the size you need and provide various grades,diameters,and thicknesses.
Steel Glossary
Here you can find all questions about contracts, payments, packaging, delivery, and more related to stainless steel products.
Stainless steel is a corrosion-resistant steel alloy. It is mainly composed of iron, chromium, nickel and other elements, and has the characteristics of high temperature resistance, acid and alkali resistance, etc.
Tensile is a stainless steel processing method that stretches the stainless steel material by applying force to deform it.
Bending is a stainless steel processing method that bends the stainless steel material by applying force to give it the desired shape.
Welding is a stainless steel processing method that connects stainless steel materials together by heating and applying pressure
Cutting is a stainless steel processing method that cuts the stainless steel material into the desired shape by using cutting tools (such as cutting machines, cutting torches, etc.).
Precision cutting is a high-precision stainless steel processing method that can achieve higher cutting accuracy by using precision cutting equipment (such as laser cutting machines) to cut stainless steel materials into the desired shape.
- Our COMPARISON TABLE
Stainless steel classification
Stainless steel is often divided into martensitic steel, ferritic steel, austenitic steel, austenitic-ferritic (duplex) stainless steel and precipitationghardening stainless steel according to its organizational state. In addition, it can be divided into chromium stainless steel, chromium-nickel stainless steel, and chromium-manganese-nitrogen stainless steel according to its composition.
| Code | CN-New grades | CN-Old grades | JIS | ASTM | UNS | KS | BSEN | |
| Austenitic stainless steel | ||||||||
| 1 | S35350 | 12Cr17Mn6Ni5N | 1Cr17Mn6Ni5N | SUS20 | 201 | S20100 | STS201 | 1.4372 |
| 2 | S35450 | 12Cr18Mn9Ni5N | 1Cr18Mn8Ni5N | SUS202 | 202 | S20200 | STS202 | 1.4373 |
| 3 | S30110 | 12Cr17Ni7 | 1Cr17Ni7 | SUS301 | 301 | S30100 | STS301 | 1.4319 |
| 4 | S30408 | 06Cr19Ni10 | 0Cr18Ni9 | SUS304 | 304 | S30400 | STS304 | 1.4301 |
| 5 | S30403 | 022Cr19Ni10 | 00Cr19Ni10 | SUS304L | 304L | S30403 | STS304L | 1.4306 |
| 6 | S30458 | 06Cr19Ni10N | 0Cr19Ni9N | SUS304N1 | 304N | S30451 | STS304NM | 1.4315 |
| 7 | S30478 | 06Cr19Ni9NbN | 0Cr19Ni10NbN | SUS304N2 | XM21 | S30452 | STS304N2 | |
| 8 | S30453 | 022Cr19Ni10N | 00Cr18Ni10N | SUS304LN | 304LN | S30453 | STS304LN | |
| 9 | S30510 | 10Cr18Ni12 | 1Cr18Ni12 | SUS305 | 305 | S30500 | STS305 | 1.4303 |
| 10 | S30908 | 06Cr23Ni13 | 0Cr23Ni13 | SUS309S | 309S | S30908 | STS309S | 1.4303 |
| 11 | S31008 | 06Cr25Ni20 | 0Cr25Ni20 | SUS310S | 310S | S31008 | STS310S | 1.4845 |
| 12 | S31608 | 06Cr17Ni12Mo2 | 0Cr17Ni12Mo2 | SUS316 | 316 | S31600 | STS316 | 1.4401 |
| 13 | S31668 | 06Cr17Ni12Mo2Ti | 0Cr18Ni12Mo3Ti | SUS316Ti | 316Ti | S31635 | 1.4571 | |
| 14 | S31603 | 022Cr17Ni12Mo2 | 00Cr17Ni14Mo2 | SUS316L | 316L | S31603 | STS316L | 1.4404 |
| 15 | S31658 | 06Cr17Ni12Mo2N | 0Cr17Ni12Mo2N | SUS316N | 316N | S31651 | STS316N | |
| 16 | S31653 | 022Cr17Ni13Mo2N | 00Cr17Ni13Mo2N | SUS316LN | 316LN | S31653 | STS316LN | 1.4429 |
| Code | New grades | Old grades | JIS | ASTM | UNS | KS | BSEN | |
| Austenitic stainless steel | ||||||||
| 1 | S31688 | 06Cr18Ni12Mo2Cu2 | 0Cr18Ni12Mo2Cu2 | SUS316J1 | STS316J1 | |||
| 2 | S31683 | 022Cr18Ni14Mo2Cu2 | 00Cr18Ni14Mo2Cu2 | SUS316J1L | STS316J1L | |||
| 3 | S31708 | 06Cr19Ni13Mo3 | 0Cr19Ni13Mo3 | SUS317 | 317 | S31700 | STS317 | |
| 4 | S31703 | 022Cr19Ni13Mo3 | 00Cr19Ni13Mo3 | SUS317L | 317L | S31703 | STS317L | 1.4438 |
| 5 | S32168 | 06Cr18Ni11Ti | 0Cr18Ni10Ti | SUS321 | 321 | S32100 | STS321 | 1.4541 |
| 6 | S34778 | 06Cr18Ni11Nb | 0Cr18Ni11Nb | SUS347 | 347 | S34700 | STS347 | 1.4550 |
| Austenitic ferritic stainless steel (bi-directional stainless steel) | ||||||||
| 7 | 0Cr26Ni5Mo2 | SUS329J1 | 329 | S32900 | STS329J | 1.4477 | ||
| 8 | S21953 | 022Cr19Ni5Mo3Si2N | 00Cr18Ni5Mo3Si2 | SUS329J3L | S31803 | STS329J3L | 1.4462 | |
| Code | New grades | Old grades | JIS | ASTM | UNS | KS | BSEN | IS | |
| Ferritic stainless steel | |||||||||
| 1 | S11348 | 06Crl3AI | 0Crl3AI | SUS405 | 405 | S40500 | STS405 | 1.4002 | 04Cr13 |
| 2 | S11163 | 022Cr11Ti | SUH409 | 409 | S40900 | STS409 | 1.4512 | ||
| 3 | S11203 | 022Cr12 | 00Cr12 | SUS410L | STS410L | ||||
| 4 | S11710 | 10Cr17 | 1Cr17 | SUS430 | 430 | S43000 | STS430 | 1.4016 | 05Cr17 |
| 5 | S11790 | 10Cr17Mo | 1Cr17Mo | SUS434 | 434 | S43400 | STS434 | 1.4113 | |
| 6 | S11873 | 022Cr18NbTi | S43940 | 1.4509 | |||||
| 7 | S11972 | 019Cr19Mo2NbTi | 00Cr18Mo2 | SUS444 | 444 | S44400 | STS444 | 1.4521 | |
| Code | New grades | Old grades | JIS | ASTM | UNS | KS | BSEN | IS | AS | |
| Martensitic stainless steel | ||||||||||
| 1 | S40310 | 12Cr12 | 1Cr12 | SUS403 | 403 | S40300 | STS403 | 403 | ||
| 2 | S41008 | 12Cr13 | 1Cr13 | SUS410 | 410 | S41000 | STS410 | 1.4006 | 12Cr13 | 410 |
| 3 | S42020 | 20Cr13 | 2Cr13 | SUS420J1 | 420 | S42000 | STS420J1 | 1.4021 | 20Cr13 | 420 |
| 4 | S42030 | 30Cr13 | 3Cr13 | SUS420J2 | STS420J2 | 1.4028 | 30 Cr13 | 420J2 | ||
| 5 | S44070 | 68Cr17 | 7Cr17 | SUS440A | 440A | S44002 | STS440A | 440A | ||
