Burapa Steel Co., Ltd.
Burapa Steel Co., Ltd.

Casting shop, Machine shop Bangkok, Thailand, Job Shop / Contract Manufacturer

Burapa Steel Company Limited (BPS) was first established in Bangkok, Thailand in 1974 to manufacture Cast Steel and Ductile Iron parts for “Automotive”, “Agricultural”, “Earth Moving”, “Electrical” and “Machinery” Parts. We then established International Iron Works Company Limited (IIW) in Samutsakorn, Thailand in 1990 to mainly focus on Grey and Ductile Iron Parts. We intentionally branded separately to better serve the respective markets for Steel and Iron.


BPS & IIW are under the same management team. Both companies are highly capable of producing both Steel and Iron Castings in order to fully utilize joint production capacity. We manufacture Cast Steel and Cast Iron parts for major industries. Our products are used in Automotive industry especially Trucks and Trailers; Water Works Parts; Electrical Parts; Rail System Parts. From our pattern shop to our finish machine shop, we understand the importance of our quality focus to our customers. Rest assures that BPS & IIW are capable of providing high quality Castings, complete with finish Machining and Paint.


We are committed to the continuous learning and development of all staff to enable them to develop individual skills in order to work effectively under our quality system. Quality of the production processes and products are continuously improved via the mean of utilizing quality staff, internal audit, corrective and preventive action. A production performance index is set up annually and the progression of the index is constantly followed up by the management team.


We are also committed to deliver the highest value to meet our customer ultimate satisfaction via the mean of International Quality System Standard. Our QA/QC team focuses in the best industry standard, as well as certified by ISO 9001:2008 and TS 16949.


Our Capabilities

  • ·         Melting
    • o   Our Bangkok and Mahachai plants have a combined melting capacity of 20,400 tons per annum, equivalent to approximately 10,000 tons of finished steel and iron castings


  • ·         Moulding Process
    • o   The Casting lines at our Mahachai plant consist of a Vertical Automatic Line, two Horizontal Automatic Lines, a Furan Line and a Manual Moulding Line.
    • o   Our Bangkok plant is equipped with two other Manual Moulding lines: Green Sand and CO2 Sand.
    • o   With the wide range of Moulding Lines, we are capable of manufacturing to specifications and sizes. We can produce from small parts up to very big parts with a maximum weight of 2 tons.


  • ·         Heat Treatment
    • o   We offer four heat treat processes: Annealing / Normalizing / Quenching / Tempering.
    • o   With these processes combined with our techniques, we are able to provide the mechanical properties desired by the customer.
    • o   Bangkok plant – 2 sets x Max capacity 3.5 tons / Internal dimension: 1.7W x 1.8L x 1.0H
    • o   Mahachai plant – 2 sets x Max capacity 3.5 tons / Internal dimension: 1.1W x 1.7L x 0.9H


  • ·         Machining
    • o   We have in-house Machining facilities at both plants; Bangkok and Mahachai. With more than 10 years’ experience, we specialize in CNC Milling and Turning for Machine Parts as customer requires.
    • o   We are able to machine advance parts that involve multiple setups or complex 3D operations and difficult to fixture parts.
    • o   We supply machined parts for various customers in many industries such as Precision Parts for Automotive, Precision Parts for Construction Equipment, Tractor Component Parts etc.
    • o   At Mahachai plant, we have 10 machining centers, 3 CNC Lathe Machines and quite a few manual Lathe and Milling Machines.
    • o   At the moment, we are continuously expanding our machine shop here at Mahachai to order to serve increasing customer demand.


Please contact us or take a moment to browse through our website for more information or meet us personally about your needs in Steel and Iron Castings parts.

Custom Manufacturing Services


  • Water Works Parts
  • Electrical Parts
  • Automotive Parts
  • Agricultural Tractor Parts
  • Rail System Parts
  • Engineering Parts
  • Cement Plant Parts
  • Construction Parts
  • Heavy Equipment Parts
  • Trailer Lifting Parts
  • Air Suspension Parts
  • Truck & Trailer Parts


  • Automotive
  • Agricultural
  • Earth Moving
  • Electrical
  • Machinery
  • ISO 9001:2008
  • ISO 9001:2000
  • ISO 9002:1994
  • ISO/TS 16949
  • ASTM
  • Construction
  • Mining


  • Machining Centers: 8 sets
  • CNC Lathe Machines: 2 sets
  • Manual Lathe Machines: 4 sets
  • Manual Milling Machines: 4 sets
  • Universal Testing machine
  • hardness tester
  • Microscope
  • Chemical Composition Analysis - Spectrometer & CE Meter
  • Thermocouples
  • Sand Quality Testing
  • Surface Quality Inspection
  • Internal Discontinuity Inspection
  • Dimension Inspection

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  • Bangkok
  • Thailand 10140