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 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 masa 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, kaurin bango mara kyau, tsayi, da nauyi kowane tsayin raka'a, ƙayyadaddun ƙayyadaddun ƙira da daraja.
