| Ihe | Ngwakọta ọkpọkọ nkedo |
| Ọkọlọtọ | BS, DIN, ANSI, wdg. |
| Ihe onwunwe | ASTM A536 Ọkwa 65-45-12,GGG50,GJS500,GGG40,QT500 wdg. |
| Nha | 1/8 ″ ruo 6 ″, ma ọ bụ dị ka achọrọ. |
| Elu | Galvanized, ojii, ma ọ bụ dị ka achọrọ. |
| Ngwa | Kwesịrị ekwesị maka njikọ ọkpọkọ nke uzuoku, ikuku, gas, mmanụ, wdg. |
| Bupụ na
| America, Australia, Brazil, Canada, Peru, Iran, Italy, India, United Kingdom, Arab, wdg. |
| ngwugwu | Ngwungwu mbupụ ọkọlọtọ, ma ọ bụ dị ka achọrọ. |
| Oge ọnụahịa | Ex-ọrụ, FOB, CIF, CFR, wdg. |
| Ịkwụ ụgwọ | T/T, L/C, Western Union, wdg. |
| Asambodo | ISO, SGS, BV. |