1.steel spline gear shaft for car gearbox 2.Standard: ASTM, AISI, BS, DIN, JIS, NF 3.100% ... QC Detail Feature: steel spline gear shaft for car gearbox Product Name: steel gear shaftMaterials: grey iron, ductile iron, malleable ... precision casting part. and supply chasing ,heat treatment,machining service.6. Manufacturing equipment (foundry used): cupola, electric furnace, resin-bonded, dry ...