ASTM A252 imhando yakagadziridzwa zvakananga kushandiswa nemachubhu esimbi epombi.
ASTM A252 inoshanda kumapombi ane silinda yesimbi inoshanda sechinhu chinotakurwa mutoro nguva dzose, kana segoko rekugadzira mapombi ekongiri akaiswa panzvimbo.
Giredhi 2 neGiredhi 3 ndiwo maviri emagiredhi aya.
A252 yakakamurwa kuita magiredhi matatu ane hunhu hwemakanika hwakavandudzwa zvakatevedzana.
Vaiva: Giredhi 1, Giredhi 2, uyeGiredhi 3.
Giredhi 2 neGiredhi 3 ndiwo magiredhi anonyanya kushandiswa muASTM A252, uye tinotsanangura hunhu hwemagiredhi ese ari maviri zvakadzama zvinotevera.
ASTM A252inogona kugadzirwa nenzira dzisina musono, dzinoshandisa resistance welding, flash welding, kana fusion welding processes.
Mukushandiswa kwepombi dzemurwi, machubhu esimbi asina musono anopa rutsigiro rwakanaka nekuda kwesimba rawo guru uye hunhu hwawo hwakafanana.
Pamusoro pezvo, machubhu esimbi asina musono anogona kugadzirwa nemadziro akakora kwazvo, izvo zvinoita kuti akwanise kutsungirira kushushikana kukuru, zvichiwedzera kuvimbika kwawo muzvigadziro zvinotsigira.
Zvisinei, mapaipi esimbi asina musono anogona kugadzirwa kusvika padhayamita yepamusoro ye660 mm, izvo zvinoderedza kushandiswa kwawo mukushandisa kunoda mirwi yakakura yedhayamita. Muchiitiko ichi,LSAW(Longitudinal Submerged Arc Welded) uyeSSAW(Spiral Submerged Arc Welded) mapaipi esimbi anobatsira zvikuru.
Huwandu hwephosphorus hahufaniri kudarika 0.050%.
Hapana zvimwe zvinhu zvinodiwa.
Simba Rokusimba uye Simba Rokukunda kana Nzvimbo Yokukunda
| Giredhi 2 | Giredhi 3 | |
| Simba rekusimba, min | 60000 psi[415 MPa] | 60000 psi[415 MPa] |
| Simba rekukohwa kana Simba rekukohwa, min | 35000 psi[240 MPa] | 45000 psi[310 MPa] |
Kureba
Mashoko chaiwo anowanikwa muTsanangudzo yePaipi Yakaunganidzwa yeASTM A252.
| Rondedzero | Ronga | Chiyero |
| Huremu | Kurema kwedzidziso | 95% - 125% |
| Dhayamita yekunze | Dhayamita Yekunze Yakatarwa | ± 1% |
| Ukobvu hwemadziro | ukobvu hwemadziro hwakatarwa | 87.5% zvishoma |
| Hurefu husina kurongeka | 4.88 kusvika 7.62 m, inchi |
| Hurefu huviri husina kurongeka | anopfuura mamita 7.62 neavhareji yeanenge mamita 10.67 |
| Hurefu hwakafanana | kureba sezvakatsanangurwa nekuchinja kunobvumidzwa kwe ±1 in. |
ASTM A370: Nzira dzeKuyedza uye Tsananguro dzeKuyedza kweMichina yeZvigadzirwa zveSimbi;
ASTM A751: Nzira dzeKuyedza, Maitiro, uye Mashoko eKuongorora Makemikoro eZvigadzirwa zveSimbi;
ASTM A941: Mashoko Ane Chekuita Nesimbi, Simbi Isina Chinotenderera, MaAlloys Ane Chekuita, uye Ferroalloys;
ASTM E29: Dzidzira Kushandisa Manhamba Akakosha muData reKuyedza Kuti Uone Kuenderana neMagadzirirwo;
Botop Steel ikambani inogadzira mapaipi esimbi yekabhoni yakasungirirwa yemhando yepamusoro uye inopa kubva kuChina, uye zvakare inogadzira mapaipi esimbi asina musono, ichikupa mhinduro dzakasiyana-siyana dzemapaipi esimbi!
