ASTM-335 leSA-355MTlhaloso e Tloaelehileng bakeng sa Seamless Ferritic Alloy-Steel Pipe bakeng sa Tšebeletso e Phahameng ea Mocheso.
Ke ea Khoutu ea Boiler le Khatello ea Sejana.
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Foromo ea odara e tlameha ho kenyelletsa lintlha tse 11 tse latelang:
1. Bongata (maoto, limithara kapa palo ea melamu)
2. Lebitso la thepa (seamless alloy steel nominal pipe)
3. Maemo (16 ka kakaretso: P1, P2, P22, P11, P22, P91)
4. Mokhoa oa ho etsa (ho qeta ho chesa kapa ho taka ho bata)
5. Sebelisa e 'ngoe ea litlhaloso tse latelang: 1), NPS le botenya ba phala ea nomoro ea serial, 2), bophara ba ka ntle le botenya ba lebota, 3), bophara ba ka ntle le botenya ba lebota bo fokolang, 4), bophara bo ka hare le botenya ba lebota la lebitso , 5), bophara bo ka hare le litaelo tse fokolang tsa ho laela lerako
6. Bolelele (bo arotsoe ka bolelele bo tsitsitseng le bolelele bo sa lekanyetsoang)
7. Qetella ts'ebetso.
8. Litlhoko tsa khetho (khatello ea metsi le ho kheloha boima bo amohelehang).
9. Litlaleho tse hlokahalang tsa tlhahlobo (sheba A530).
10. Nomoro e tloaelehileng. 11 Litlhoko tse khethehileng kapa litlhoko life kapa life tsa boikhethelo tsa tlatsetso.
Lisebelisoa le tlhahiso
1. Liphaephe tsa tšepe tsa mabitso li ka qeta ho chesa kapa li hahoa ka serame, 'me li fetile kalafo ea ho qetela ea mocheso e hlokahalang ho latela maemo.
2. P2 le P12 grade tšepe. Likarolo tsena tse peli tsa tšepe li lokela ho etsoa ho sebelisoa mokhoa o mahoashe oa ho qhibiliha ha lijo-thollo. Haeba ho na le litlhoko tse khethehileng tsa boholo ba lijo-thollo kapa ts'ebetso ea deoxidation, li lokela ho lumellana le moreki le moetsi oa tšepe.
3. Kalafo ea mocheso
1. Ntle le PSC, P23, P91, P92, P122 le P911 grade steel 'me joalokaha ho boletsoe, lihlopha tsohle tsa liphaephe tsa lebitso li tla futhumatsoa hape li fanoe ka mokhoa o feletseng, oa isothermal annealed kapa normalized and tempered state. Haeba e fanoe ka boemo bo tloaelehileng le bo itekanetseng, mocheso o fokolang oa mocheso oa P5, P5B, P9, P21 le P22 grade steel e tla ba 675 ° C. Mocheso o fokolang oa mocheso bakeng sa tšepe ea P1, P2, P11, P12 le P15 e lokela ho ba 650 ℃.
2. Phekolo ea ho qetela ea mocheso oa tšepe ea P92 le P911 e lokela ho ba e tloaelehileng ka bonyane ba 1040 ℃ le ho futhumatsa bonyane ba 730 ℃.