ABOUT PRODUCTS EQUIPMENT PROCESS FLOW CONTACT  
 
 

CASTING
     
  Silica sand casting
  Resin sand casting
  Shell casting
    Lost wax casting
  Lost foam casting
  Vacuum casting
  Centrifugal casting
  Gravity casting
  Pressing casting
  Patten casting
     
 
 
FORGING
     
  Free forging
  Mould shaping forging
  Swing rolling
     
 
 
ROLLING
     
  Ring rolling
  Magic diameter axis rolling
  Wheel rolling
 
 
COLD DEFORMATION
     
  Stamping
  Extrusion
  Spinning process
     
 
 
MACHINING
     
  Turning
  Milling
  Drilling
  Boring
  Grinding
  Teeth machining
  Three-dimensional machining
  Wire cutting
     
 
 
HEAT TREATMENT
     
  Annealing
  Normalizing
  Quench & temper
  Hardening + tempering
  Induction hardening (high frequency, medium frequency)
  Carburizing
  Nitridring
  Carbonitriding
  QPQ
     
 
 
SURFACE TREATMENT
     
  Ball blast
  Polishing
  Passivating
  Plating
  Anodic oxidation (harden, decoration)
  Electrophoresis
  Electrostatic coating (paint, plastic)
     
 
 
INSPECTION
     
  Chemical composition
  Mechanical property
  Dimension
  Surface roughness
  Hardness
  Nondestructive examination(UT, MT)
  UT , MT
     
 

HNGJ Machinery & Metal Products Co., Ltd.
# 1129, Ze Yang Bldg, 166th Fushi Road , Shijingshan District,Beijing,China 100043
Tel . 86-10-6888 0166 / 68880167 Fax. 86-10-6888 5440
E - mail : hngj@hngj.com http://www.hngj.com

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