the main shaft 

Materials: carbon steel and alloy steel

Process: forging, normalizing, tempering-resistant machining,quenching/tempering and precision machining

Surface finish: zinc plating and chemical conversion/anodizecoating

Standards: GB, GBT, JIS, AISI, SAE, ASTM/ASME, EN, GOST andDIN

Sizes:

Diameter: less than 2500mm

Length: less than20,000mm

Packing: standard export carton

Zhongyuan Special Steel Machine Manufacture co ltd, wasestablished in 1995 with an area of 120000 square meters , morethan 50 sets of machine equipment in large and middle size . Wemanufacture forge material ,forge parts, drill tool, axes parts,roller and protect cap for the drill tool .We are especially goodat finish machining for roller with big size,  Acerose rollerand deep-hole part .  All those things are widely applied toPetroleum, Machining, metallurgy, Shipping, Chemical, Power and soon.

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