Our 1/2 Inch Blind Flange is designed for sealing the end of a pipe or vessel, effectively preventing the flow of fluids or gases in various piping systems. Made from high-quality stainless steel, this flange offers excellent durability, corrosion resistance, and strength, making it ideal for use in industries such as petrochemicals, oil and gas, water treatment, and manufacturing.
Our Grades
Austenitic
| Grade | USA | Japan | Germany | UK | France | Sweden | China |
| ANSI/ASME | JIS | DIN | BS | EN | AFNOR | SS | GB |
| 304 | AISI 304 | SUS 304 | 1.4301 | 304S31 | X5CrNi18-10 | Z6CN18-09 | 2337 | 0Cr18Ni9 |
| 304L | AISI 304L | SUS 304L | 1.4306 | 304S11 | X2CrNi19-11 | - | 1.4306 | 00Cr19Ni10 |
| 304H | AISI 304H | SUS 304H | 1.4301H | 1.4301H | 304S41 | X5CrNi18-10 | - | 0Cr18Ni9H |
| 316 | AISI 316 | SUS 316 | 1.4401 | 316S31 | X5CrNiMo17-12-2 | Z6CNMo17-12-2 | 1.4401 | 0Cr17Ni12Mo2 |
| 316L | AISI 316L | SUS 316L | 1.4404 | 316S11 | X2CrNiMo17-12-2 | - | 1.4404 | 00Cr17Ni12Mo2 |
| 303 | AISI 303 | SUS 303 | 1.4305 | 303S31 | X8CrNiS18-9 | - | 1.4305 | 0Cr17Ni12 |
| 309 | AISI 309 | SUS 309 | 1.4828 | 309S31 | X15CrNi25-20 | - | 1.4828 | - |
| 309S | AISI 309S | SUS 309S | 1.4833 | 309S31 | X15CrNi25-20 | - | 1.4833 | - |
| 309H | AISI 309H | SUS 309H | 1.4833 | 309H31 | X15CrNi25-20 | - | 1.4833 | - |
| 310 | AISI 310 | SUS 310 | 1.4841 | 310S31 | X15CrNi25-20 | - | 1.4841 | - |
| 310S | AISI 310S | SUS 310S | 1.4841 | 310S31 | X15CrNi25-20 | - | 1.4841 | - |
| 310H | AISI 310H | SUS 310H | 1.4845 | 310H31 | X15CrNi25-20 | - | 1.4845 | - |
| 317 | AISI 317 | SUS 317 | 1.4449 | 317S31 | X6CrNiMoTi17-12-2 | - | 1.4449 | - |
| 317L | AISI 317L | SUS 317L | 1.4438 | 317S11 | X2CrNiMo17-12-2 | - | 1.4438 | - |
| 317LMN | AISI 317LMN | - | 1.4438 | - | X2CrNiMoN17-12-2 | - | 1.4438 | - |
| 321 | AISI 321 | SUS 321 | 1.4541 | 321S31 | X6CrNiTi18-10 | Z6CnTi18-10 | 1.4541 | 1Cr18Ni11Ti |
| 321H | AISI 321H | SUS 321H | 1.4541H | 321H31 | X6CrNiTi18-10 | - | 1.4541H | 1Cr18Ni11TiH |
| 347 | AISI 347 | SUS 347 | 1.455 | 347S31 | X6CrNiNb18-10 | Z6CnNb18-10 | 1.455 | 1Cr18Ni11Nb |
| 347H | AISI 347H | SUS 347H | 1.4550H | 347H31 | X6CrNiNb18-10 | - | 1.4550H | 1Cr18Ni11NbH |
Ferritic, Martensitic, Duplex, Precipitation Hardening
| Grade | USA | Japan | Germany | UK | France | Sweden | China |
| ANSI/ASME | JIS | DIN | BS | EN | AFNOR | SS | GB |
| 430 | AISI 430 | SUS 430 | 1.4016 | 430S17 | X12Cr17 | Z10CD17 | 1.4016 | 1Cr17 |
| 434 | AISI 434 | SUS 434 | 1.4112 | 434S17 | X15CrNiSi20-12 | – | 1.4112 | 1Cr18Si19 |
| 436 | AISI 436 | SUS 436 | 1.4112 | 436S21 | X3Cr12 | – | 1.4112 | 1Cr12 |
| 444 | AISI 444 | SUS 444 | 1.4521 | 444S23 | X2CrTi12 | – | 1.4521 | 0Cr18Ti12 |
| 409 | AISI 409 | SUS 409 | 1.4512 | 409S17 | X8Cr17 | Z10CD17 | 1.4512 | 1Cr17 |
| 409L | AISI 409L | SUS 409L | 1.4512L | 409L | X8Cr17 | – | 1.4512L | 1Cr17L |
| 410 | AISI 410 | SUS 410 | 1.4006 | 410S21 | X20Cr13 | Z20CD13 | 1.4006 | 1Cr13 |
| 420 | AISI 420 | SUS 420 | 1.4021 | 420S29 | X20Cr13 | Z20CD13 | 1.4021 | 1Cr13 |
| 431 | AISI 431 | SUS 431 | 1.4057 | 431S29 | X12CrMoV12-3 | – | 1.4057 | 1Cr13MoV |
| 440A | AISI 440A | SUS 440A | 1.4115 | 440S38 | X50CrMoV15 | – | 1.4115 | 1Cr15MoV |
| 440B | AISI 440B | SUS 440B | 1.4418 | 440S40 | X55CrMoV14 | – | 1.4418 | 1Cr17MoV |
| 440C | AISI 440C | SUS 440C | 1.4125 | 440S45 | X65Cr13 | – | 1.4125 | 1Cr18Mo |
| 2205 | AISI 2205 | SUS 2205 | 1.4462 | 2205S32 | X2CrNiMoN22-5-3 | Z3CN22-5-3 | 1.4462 | – |
| 2507 | AISI 2507 | SUS 2507 | 1.441 | 2507S32 | X2CrNiMoCu25-7-4 | Z6CN25-7-4 | 1.441 | – |
| 2304 | AISI 2304 | SUS 2304 | 1.4362 | 2304S31 | X2CrNiMoN21-5-2 | – | 1.4362 | – |
| 904L | AISI 904L | SUS 904L | 1.4539 | 904S13 | X1NiCrMoCu25-20-5 | Z6CND25-20-5 | 1.4539 | – |
| LDX 2101 | – | – | 1.4162 | LDX | X2CrNiN22-5-2 | – | 1.4162 | – |
| S32205 | – | – | 1.4462 | S32205 | X2CrNiMoN22-5-3 | – | 1.4462 | – |
| 17-4 PH | AISI 17-4 PH | SUS 17-4 PH | 1.4542 | 17-4 PH | X5CrNiCuNb16-4 | Z5CNCuNb16-4 | 1.4542 | – |
| 15-5 PH | AISI 15-5 PH | SUS 15-5 PH | 1.4545 | 15-5 PH | X5CrNiCuNb15-4 | Z5CNCuNb15-4 | 1.4545 | – |
| 13-8 Mo | AISI 13-8 Mo | SUS 13-8 Mo | 1.4548 | 13-8 Mo | X4CrNiMo16-5-1 | Z4CNiMo16-5-1 | 1.4548 | – |
| 17-7 PH | AISI 17-7 PH | SUS 17-7 PH | 1.4568 | 17-7 PH | X7CrNiAl17-7 | Z7CNiAl17-7 | 1.4568 | – |
| 2507 | AISI 2507 | SUS 2507 | 1.441 | 2507S32 | X2CrNiMoCu25-7-4 | Z6CN25-7-4 | 1.441 | – |
Carbon Steel
| USA (AISI/SAE) | Japan (JIS) | Germany (W-nr) | DIN | BS (UK) | Europe (EN) | France (AFNOR) | Italy (UNI) | Sweden (SS) | China (GB) |
| A36 | SS400 | 1.0117 | St37-2 | 40EE | S235J2 | A37-2 | Fe360B | 17100 | Q235B |
| 1015 | SM400A | 1.0038 | RSt37-2 | 40A | S235JR | E24-2 | Fe360B | 1311 | Q235A |
| 1035 | S35C | 1.0501 | C35 | 070M36 | C35 | AF55C35 | C35 | 1550 | 35 |
| 12L14 | SUM24L | 1.0736 | 9SMnPb28 | 230M07Pb | 11SMnPb30 | - | AVZ | 1914 | Y12Pb |
| A105 LF2 | SF440A | 1.046 | C22.8 | 161-360A | P250GH | C22.8 | C21 | - | 20MnK |
| 55 | S55C | 1.0535 | C55 | 070M55 | C55 | XC55 | C55 | 1655 | 55 |
| 1042/1045 | S45C | 1.0503 | C45 | 070M46 | Ck42 | AF65C45 | C45 | 1650 | 40 |
| 1040/1038 | S40C | 1.0511 | C40 | 080M40 | C40 | AF60C40 | C40 | 1671 | 40 |
| 1050 | S50C | 1.054 | C50 | 080A52 | C50 | XC48H1 | C50 | 1674 | 50 |
| 4130 | SCM430 | 1.7218 | 25CrMo4 | 708A25 | 25CrMo4 | 25CD4 | 25CrMo4 | 2244 | 30CrMo |
| A283 Gr.CSS330 | 1.0038 | 1.0038 | St37-2 | 43C | S185 | A33-3 | Fe320 | 17100 | Q235C |
| A572 Gr.50SM490A | 1.0545 | 1.0545 | S355J2G3 | 50D | S355JR | Fe510D | 1872 | Q345B | Q345B |
| 4140 | SCM440 | 1.7225 | 42CrMoS4 | 708M40 | 42CrMoS4 | 42CD4u | 42CrMo4 | 2244 | 42CrMo |
| 4340 | SNCM439 | 1.6582 | 34CrNiMo6V | 817M40 | 34CrNiMo6 | 35NCD6 | 35NiCrMo6KB | 2541 | ZG34CrNiMo |
| 5160 | SUP9 | 1.1777 | 51CrV4 | 251A58 | 51CrV4 | 51CDV4 | 50CrV4 | 2551 | 60CrMnV |
| 8620 | SNCM220 | 1.6523 | 20CrNiMo2 | 805M20 | 20NiCrMo2 | 20NCD2 | 20CrNiMo | 2258 | 20CrNiMo |
| 300M | - | 1.6957 | 43CrNiMo8-6-4 | - | 40NiCrMo8-4-4 | 40CNCD8-6 | - | - | 40CrNiMo |
| USA (AISI/SAE) | Japan (JIS) | Germany (W-nr) | DIN | BS (UK) | Europe (EN) | France (AFNOR) | Italy (UNI) | Sweden (SS) | China (GB) |
| A36 | SS400 | 1.0117 | St37-2 | 40EE | S235J2 | A37-2 | Fe360B | 17100 | Q235B |
| 1015 | SM400A | 1.0038 | RSt37-2 | 40A | S235JR | E24-2 | Fe360B | 1311 | Q235A |
| 1035 | S35C | 1.0501 | C35 | 070M36 | C35 | AF55C35 | C35 | 1550 | 35 |
| 12L14 | SUM24L | 1.0736 | 9SMnPb28 | 230M07Pb | 11SMnPb30 | - | AVZ | 1914 | Y12Pb |
| A105 LF2 | SF440A | 1.046 | C22.8 | 161-360A | P250GH | C22.8 | C21 | - | 20MnK |
| 55 | S55C | 1.0535 | C55 | 070M55 | C55 | XC55 | C55 | 1655 | 55 |
| 1042/1045 | S45C | 1.0503 | C45 | 070M46 | Ck42 | AF65C45 | C45 | 1650 | 40 |
| 1040/1038 | S40C | 1.0511 | C40 | 080M40 | C40 | AF60C40 | C40 | 1671 | 40 |
| 1050 | S50C | 1.054 | C50 | 080A52 | C50 | XC48H1 | C50 | 1674 | 50 |
| 4130 | SCM430 | 1.7218 | 25CrMo4 | 708A25 | 25CrMo4 | 25CD4 | 25CrMo4 | 2244 | 30CrMo |
| A283 Gr.CSS330 | 1.0038 | 1.0038 | St37-2 | 43C | S185 | A33-3 | Fe320 | 17100 | Q235C |
| A572 Gr.50SM490A | 1.0545 | 1.0545 | S355J2G3 | 50D | S355JR | Fe510D | 1872 | Q345B | Q345B |
| 4140 | SCM440 | 1.7225 | 42CrMoS4 | 708M40 | 42CrMoS4 | 42CD4u | 42CrMo4 | 2244 | 42CrMo |
| 4340 | SNCM439 | 1.6582 | 34CrNiMo6V | 817M40 | 34CrNiMo6 | 35NCD6 | 35NiCrMo6KB | 2541 | ZG34CrNiMo |
| 5160 | SUP9 | 1.1777 | 51CrV4 | 251A58 | 51CrV4 | 51CDV4 | 50CrV4 | 2551 | 60CrMnV |
| 8620 | SNCM220 | 1.6523 | 20CrNiMo2 | 805M20 | 20NiCrMo2 | 20NCD2 | 20CrNiMo | 2258 | 20CrNiMo |
| 300M | - | 1.6957 | 43CrNiMo8-6-4 | - | 40NiCrMo8-4-4 | 40CNCD8-6 | - | - | 40CrNiMo |
| 4130 | SCM420 | 1.7218 | 25CrMo4 | 708A25 | 25CrMo4 | - | 25CrMo4 | 2142 | 30CrMo |
| 4140/4142 | SCM440H | 1.7225 | 42CrMo4 | 708M40 | 42CrMo4 | 42CD4 | 42CrMo4 | 2244 | 42CrMo |
| 4340 | SNCM447 | 1.6582 | 34CrNiMo6 | 817M40 | 34CrNiMo6 | 35NCD6 | 35CrNiMo6 | 2541 | 34CrNi3Mo |
| 8620 | SNCM220 | 1.6523/- | 20NiCrMo2-2 | 805A20 | 20NiCrMo2-2 | 20NCD2 | 20NiCrMo2 | 2520 | 20CrNiMo |
| 52100 | SUJ2 | 1.2067 | 100Cr6 | 534A99 | 102Cr6 | 100Cr6 | 100Cr6 | 2258 | GCr15 |
| 5140 | SCR440 | 1.7035 | 41Cr4 | 530M40 | 41Cr4 | 41CD4 | 41Cr4 | 2241 | 40Cr |
| 6150 | SCRV50 | 1.8159 | 50CrV4 | 735A50 | 51CrV4 | 50CV4 | 50CrV4 | 2230 | 50CrVA |
| 8627 | SNCM220 | - | - | - | - | - | - | - | - |
| 1527 | SCMn2 | 1.0401 | 28Mn6 | 120M36 | 28Mn6 | 35Mn5 | C28Mn | 1370 | 30Mn2 |
| 5120 | SCM220 | 1.7027 | 20Cr4 | 530M20 | 20Cr4 | 20CD4 | 20Cr4 | 2252 | 20CrMn |
| 8622 | SNCM220 | - | - | - | - | - | - | - | - |
| 4320 | SNCM420 | 1.6523 | 20NiCrMo2-2 | 805M20 | 20NiCrMo2-2 | 20NCD2 | 20NiCrMo2 | - | 20CrNiMo |
| 5015 | SCR415 | 1.7015 | 15Cr3 | 530M15 | 15Cr3 | - | - | 2115 | 15CrMn |
| 5130 | SCR430 | 1.7176 | 30Cr4 | 530M30 | 30Cr4 | - | - | - | 30CrMnSi |
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