Seamless alloy steel pipe stockASTM A335 P91, pipe ea tšepe e se nang sekoli e sebelisoang ka li-tubes tsa boiler, li-tubes tsa mocheso le liindasteri tse ling, e ka sebelisoa e le liphaephe tsa tšepe bakeng sa li-superheaters tse phahameng tsa mocheso le li-reheaters ka li-boilers tsa subcritical le supercritical tse nang le mocheso oa lebota ≤625 ° C, hammoho le lebota la lihlooho tsa mocheso o phahameng. le liphaephe tsa mouoane tse nang le mocheso ≤600℃ li ka boela tsa sebelisoa e le lisebelisoa tsa mocheso oa matla a nyutlelie le li-tubes tsa petroleum tse senyang mocheso oa sebōpi.
ASTM A335 P91 ke tšepe ea alloy e phahameng ea mocheso e leng tšepe e tlaase ea chromium-molybdenum. E sebelisoa haholo liphaepheng le lisebelisoa tlas'a mocheso o phahameng le maemo a khatello e phahameng, a kang petrochemical, matla a motlakase, limela tsa matla a nyutlelie le masimo a mang. Lintho tse ka sehloohong tsa thepa ena ke chromium, molybdenum, koporo, manganese, silicon, phosphorus, sebabole le likarolo tse ling. Litaba tsa chromium le molybdenum li batla li phahame, tse ka ntlafatsang ho hanyetsa mocheso o phahameng le khanyetso ea oxidation ea thepa.
Thepa ea ASTM A335 P91 e na le lisebelisoa tse ntle haholo tsa mochini mme e ntse e ka boloka matla a matle le ho tiea tlas'a mocheso o phahameng le maemo a khatello e phahameng. Boitsebiso bo boetse bo hanyetsa haholo ho oxidation, e ka khonang ho atolosa bophelo ba tšebeletso ea liphaephe le lisebelisoa. Ntle le moo, thepa e boetse e na le ts'ebetso e ntle ea welding, e etsang hore kaho le tlhokomelo e be bonolo.
Hobane thepa ea ASTM A335 P91 e na le thepa ena e babatsehang, e sebelisoa haholo libakeng tse ling tsa mocheso o phahameng le khatello e phahameng. Ka mohlala, indastering ea petrochemical, liphaephe le lisebelisoa tse entsoeng ka ASTM A335 P91 li ka mamella khoholeho ea lik'hemik'hale le ho bola tlas'a mocheso o phahameng le likhatello, ho netefatsa ts'ebetso e sireletsehileng ea lisebelisoa. Libakeng tsa matla a motlakase le limela tsa matla a nyutlelie, liphaephe le lisebelisoa tse entsoeng ka ASTM A335 P91 li ka mamella ho bola le khoholeho ea mouoane le mouoane oa metsi le mecha e meng ea litaba tlas'a mocheso o phahameng le khatello, ho netefatsa ts'ebetso e tloaelehileng ea thepa.