ASTM A335 jẹ iṣiro deede fun paiy Sheamless Ferritic Soloy aaye fun iṣẹ otutu otutu ga. Awọn ipele olupin: P1, P2, P5B, P11, P15, P12, P21, P11, P11, P91, P92, P92, P92 ni iṣe pupọ julọ. Awọn iṣọra pato ni ifiwe ati Odi Kere chrome-Molyybdemu (tun mọ bi CR-Moly) awọn opo pipo fun awọn ohun elo giga. Pipe paṣẹ fun alaye si pato rẹ yoo dara fun atunse, vanstoning ati awọn iṣẹ ṣiṣe ni irufẹ kanna, ati alurin isiro-ising. ASTM A335 P11, P22 ati P92 wa ni lilo ni awọn irugbin agbara ati awọn ile-iṣẹ witchemical, lakoko ti P9 ati P5 ti wa ni o kun.
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ASTM A335 p5, P9, P11, P22, P22, P126