Abubuwan ƙira, kayan aikin injiniya da ƙayyadaddun samarwa ana sarrafa su ta kewayon ƙa'idodin ƙasashen duniya da na ƙasa don bakin karfe. Yayin da ake amfani da tsohuwar tsarin lambar bakin karfe na AISI uku lambobi (misali 304 da 316) don rarraba maki bakin karfe, sabbin tsarin rarrabawa an ɓullo da su.
Waɗannan tsarin sun haɗa da lambar UNS mai lamba 1 + 5, kamar S30400, kamar yadda SAE da ASTM suka ayyana. Ƙasashen Turai suna ɗaukar ƙa'idodin ƙa'idar Euro guda ɗaya. Waɗannan ƙasashe ko dai suna musanya ko daidaita takamaiman ƙa'idodin ƙasarsu don kwatanta ƙa'idodin ƙa'idar Yuro. Sauran sunayen da aka maye gurbin sun haɗa da tsofaffin BS da lambobi EN kamar 304S31 da 58E.
Wasu maki ba a rufe su da daidaitattun lambobi kuma suna iya zama maki na mallakar mallaka ko kuma a yi suna ta amfani da ma'auni don samfuran ƙwararrun kamar waya walda.
An yi bayanin ma'aunin ƙarfe dalla-dalla a cikin Ƙungiyar Bakin Karfe ta Biritaniya "Jagora zuwa Ƙididdiga Bakin Karfe", wanda kuma aka sani da BSSA "Jagorar Shuɗi".
Teburin da ke ƙasa ya lissafa nau'ikan maki na bakin karfe, tsohuwar ƙirar BS, sabuwar lambar UNS da sabon ƙirar EN.
| Daraja | UNS No | BS | Yuro na al'ada No. |
| 301 | S30100 | 301S21 | 1.4310 |
| 302 | S30200 | 302S25 | 1.4319 |
| 303 | S30300 | 303S31 | 1.4305 |
| 304 | S30400 | 304S31 | 1.4301 |
| 304l | S30403 | 304S11 | 1.4306 |
| 304H | S30409 | - | 1.4948 |
| (302HQ) | S30430 | 394S17 | 1.4567 |
| 305 | S30500 | 305S19 | 1.4303 |
| 309S | S30908 | 309S24 | 1.4833 |
| 310 | S31000 | 310S24 | 1.4840 |
| 310S | S31008 | 310S16 | 1.4845 |
| 314 | S31400 | 314S25 | 1.4841 |
| 316 | S31600 | 316S31 | 1.4401 |
| 316l | S31603 | 316S11 | 1.4404 |
| 316H | S31609 | 316S51 | - |
| 316 Ti | S31635 | 320S31 | 1.4571 |
| 321 | S32100 | 321S31 | 1.4541 |
| 347 | S34700 | 347S31 | 1.4550 |
| 403 | S40300 | 403S17 | 1.4000 |
| 405 | S40500 | 405S17 | 1.4002 |
| 409 | S40900 | 409S19 | 1.4512 |
| 410 | S41000 | 410S21 | 1.4006 |
| 416 | S41600 | 416S21 | 1.4005 |
| 420 | S42000 | 420S37 | 1.4021 |
| 430 | S43000 | 430S17 | 1.4016 |
| 440C | S44004 | - | 1.4125 |
| 444 | S44400 | - | 1.4521 |
| 630 | S17400 | - | 1.4542 |
| (904L) | N08904 | 904S13 | 1.4539 |
| (253MA) | S30815 | - | 1.4835 |
| (2205) | S31803 | 318S13 | 1.4462 |
| (3CR12) | S41003 | - | 1.4003 |
| (4565S) | S34565 | - | 1.4565 |
| (Zeron 100) | S32760 | - | 1.4501 |
| (UR52N+) | S32520 | - | 1.4507 |
ASTM ba ta gane abubuwan da ke cikin maƙallan ba. Yawancin wasu maki da ƙayyadaddun bayanai suna samuwa.
Kayan da Jindalai Karfe Group ya kawo an kera su don biyan ma'auni da yawa dangane da samfurin. Ka'idoji kuma sun rufe ƙarshen kayan.
Jindalai Karfe Group- sanannen masana'anta na bakin karfe a kasar Sin. Kasancewa sama da shekaru 20 na ci gaba a kasuwannin duniya kuma a halin yanzu suna da masana'antu 2 tare da ikon samarwa sama da ton 400,000 a shekara. Idan kuna son samun ƙarin bayani game da kayan bakin karfe, maraba don tuntuɓar mu a yau ko neman zance.
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Lokacin aikawa: Dec-19-2022