- GOST 977-88 Ihe nkedo ígwè - nkọwa zuru oke
- TS EN ISO 8062 - Ihe nkedo - Sistemu nke nnabata nha na ikike igwe
- DIN EN 1561 Ihe nkedo isi awọ
- ASTM-A48&A48M-2003-Nkọwa ọkọlọtọ nke ihe nkedo isi awọ.
- ASTM-A108-2003-Nkọwapụta ọkọlọtọ maka igwe mmanya, carbon na alloy, oyi gwụchara.
- ASTM-A322-91-EN-Standard nkọwapụta maka ogwe igwe, alloy, akara ule
- ASTM-A732&A732M-2002-
- DIN-EN-10346-Na-aga n'ihu na-ekpo ọkụ na-etinye nchara nchara nchara
- GBT-9439-2010-ihe nkedo ígwè isi awọ
- GOST-3443-87
- GOST 7293-85 Spheroidal Graphite Cast Iron maka nkedo
- GOST-7293-85_RU-Ihe nkedo ígwè
- GOST-30893.1-2002-RU-Nkwekọrịta izugbe
- ISO-2768-1 Nkwekọrịta Ọhaneze
- Ike nkedo na RMC Foundry
- Metal na Alloys maka usoro nrụpụta dị iche iche
- Ntụle Usoro nkedo
- Ngwa nkedo aja
- Nkedo ígwè ọkwa
- Ike nkedo ájá na FMC Foundry
- Ọla ọla na alloys maka nkedo ájá
- Data teknụzụ nkedo itinye ego
- Nzọụkwụ nke itinye ego itinye ego efu
- Usoro nke itinye ego na foto na nkọwa
