Uhlobo olugcwele lwentwasahlobo olune-valve yokuphepha

I-A28H-10C, A28Y-10P, A28Y-16P, A28Y-25P, A28Y- 40P

I-A28Y-16C, A28Y-16R, A28Y-25R, A28Y-40R

Uhlobo lwe-A28H lusetshenziselwa imishini nepayipi lomoya, uN₂, H₂ igesi elixubekile umusi njll okuphakathi ukuthi izinga lokushisa elisebenzayo lingaphansi kuka-200 ℃ .A28Y-P / 10R₈ uhlobo lusetshenziselwa okokusebenza kanye nepayipi lekhwalithi nge-corrode medium lokho ukushisa okusebenzayo kungaphansi kwama-200 ℃ .Thatha amadivayisi wokuvikela ingcindezi.