T = (0.5 ~ 0.7) * k * σs * Kamar * d / 1000 Daga cikin su, T: ƙarfin jujjuyawar ƙarfi, Nm k: ƙarfin ƙarfin ƙarfi, yawanci 0.12 σs: ƙarfin ƙarfin kayan abu mai ƙarfi, Mpa As: yanki mai haɗari na Cross-section, mm2 d: Diamita mara iyaka, mm Hebei Chengyi Engineering Materials Co., Ltd.
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