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China, Chinese SAE4140, Scm440 Hydraulic Cylinder Barrel1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Hydraulic PartsHydraulic CylinderScm440 Hydraulic Cylinder BarrelHydraulic Cylinder BarrelHydraulic Cylinder
Guangzhou Kingmetal Steel Industry Co., Ltd.
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Product Description SAE4140,SCM440 Hydraulic Cylinder BarrelAs a professional hydraulic cylinder barrel manufacturer and supplier,Kingmetal has been supplying and exporting hydraulic cylinder barrel for almost 20 years. TypeSeamless, Hot Rolled, Cold Rolled, Cold DrawnStandardDIN/ASTM/EN/JISRoughness0.2-0.4 umGradesSAE4140/AISI4140/42CRMO4/SCM440ID ToleranceH7,H8,H9Outside Diameter20 - 1500 MmThickness0.5 - 6 MmProtectionAnti-rust oil on inside and outside surface, plastic caps in both endsDelivery Conditions The tubes shall be manufactured from cold drawn or cold rolled processes. The tubes shall be supplied in one of the delivery conditions as follows:DesignationSymbolDescriptionCold finished (hard)BKTubes do not undergo heat treatment following the final cold forming and thus, have a rather high resistance to deformation.Cold finished (soft)BKWThe final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding).Cold finished and stress-relievedBKSHeat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.AnnealedGBKThe last cold forming process is followed by annealing in a controlled atmosphere.NormalizedNBKThe last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.
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