Gearboxes for Pumping Jack and Pumping Unit
SMI Gearboxes for Pumping Jack and Pumping Unit have been widely used and recognized in Texas, USA since 1996.
AISI: 1035, 1040, 4140, 4320, 4340, 8620H
Properties to meet:
AISI 8620H, AISI 135, AISI 1045, AISI 4140, AISI 4320, AISI 4340
Heat Treatment:
Full anneal, Normalize, Carburize, Case hardening, Quench & temper, Flame harden, Induction harden
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