Universal Joint txais siab zog alloy steel 42CrMo, 316, 304, 7075 txhuas tag nrho. Qhov tseem ceeb quenching HRC43-46, central thaiv HRC48-52, axis HRC3-42. Cia ob lub axes hloov nrog cov kev xav tau ua haujlwm hauv lub kaum sab xis