China factory 34CrMo4 Scm430 Scm2 4130 Alloy Steel Forgings Gear Rings Shaft Blanks Oil Well Drill Pipe Couplings gear coupling

Product Description Product Description Product Name    FORGING STEEL RING Forging Tolerance Construction machinery forging parts forging rings+/-0.1mm Surface Treatment Turning / Machining Precise Machining Mountain Hole/Grease Holes Precise Turning Raceways Transport Package Steel Pallet or Wooden Case by Sea     Production scenarios     Packaging & Shipping   FAQ Q: Are you trading … Continue reading China factory 34CrMo4 Scm430 Scm2 4130 Alloy Steel Forgings Gear Rings Shaft Blanks Oil Well Drill Pipe Couplings gear coupling