Nanjing Teqrun Mechanical Machinery Co., Ltd.  

Product Name: Valve Guide Sulzer 40/48 Model NO.: SULZER 40/48 Material: Gg25 Dimensions: 59diax48diax28dia Borex235length Trademark: TEQRUN Transport Package: Plywood Box Specification: CCS, BV, GL Origin: Nanjing China HS Code: 84099910 Product Description Discription of Valve Guide for Sulzer 40/48 engine:1. Material: GG25(standard), Alternatives: High alloy cast iron, Broneze, etc...A). Mechanical properties(GG25):Tensile strength: 250MPa min. Hardness: HB220-260B). Matrix: Perlite, ferrite 10% max.; Graphite: Preferably lamellar and uniformly distributed; Phosphide eutectic: Preferably continuous network.2. Guide bore to be gun drilled and plateau honed for excellent bore diameter and straightness and achieving cross hatch pattern for better running-in;3. Fitting diameter to be ground, and achieving max. 0.0008' concentricity between guide bore and fitting dia.4. Surface treatment: Phosphating or Tufftriding.5. Casting defects and welding repair are not allowed.