Spirally Welded Karfe Bututu ASTM A252 Grade 1 2 3
Kayan Injiniya
| Darasi na 1 | Darasi na 2 | Darasi na 3 | |
| Ƙarfin Ƙarfin Haɓaka ko Ƙarfin Ƙarfafawa, min, Mpa(PSI) | 205 (30000) | 240 (35000) | 310 (45 000) |
| Ƙarfin ɗamara, min, Mpa(PSI) | 345 (50000) | 415 (60000) | 455 (66 0000) |
Binciken samfur
Karfe ba zai ƙunshi fiye da 0.050% phosphorus ba.
Bambance-bambancen da aka halatta a Nauyi da Girma
Kowane tsayin tulin bututu za a auna shi daban kuma nauyinsa ba zai bambanta fiye da 15% sama da 5% a ƙarƙashin nauyinsa ba, ana lissafta ta amfani da tsayinsa da nauyinsa kowane tsayin raka'a.
Diamita na waje bazai bambanta fiye da ± 1% daga ƙayyadadden diamita na waje ba
Kaurin bango a kowane wuri ba zai wuce 12.5% a ƙarƙashin ƙayyadadden kauri na bango ba
Tsawon
Tsawon bazuwar guda ɗaya: 16 zuwa 25ft(4.88 zuwa 7.62m)
Tsawon bazuwar sau biyu: sama da 25ft zuwa 35ft(7.62 zuwa 10.67m)
Tsawon Uniform: halattaccen bambancin ±1in
Ƙarshe
Za a samar da tulin bututu tare da filaye masu kyau, kuma za a cire burbushin da ke kan iyakar
Lokacin da bututun da aka ƙayyade ya zama bevel ya ƙare, kwana zai zama digiri 30 zuwa 35
Alamar samfur
Kowane tsayin bututun bututu za a yi alama ta hanyar stenciling, stamping, ko mirgina don nunawa: sunan ko alamar masana'anta, lambar zafi, tsarin masana'anta, nau'in kabu na helical, diamita na waje, kauri maras tushe, tsayi, da nauyi kowane tsayin raka'a, ƙayyadaddun nadi da daraja.
