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Article Archive June and July 2012

Dandong Foundry is a professional Iron and Steel Casting Manufacturer in China. We share some standards
 and experiences to help buyers to better understand some technical issues with iron and steel castings. 

  1. EN-GJS-500-7, Ductile Cast Iron GGG50 - on Jul. 30, 2012
    EN-GJS-500-7 is middle grade of ductile cast iron in European standard DIN EN 1563, its equivalent grade in DIN 1693 is GGG50. The followings are its other equivalent grades, its mechanical properties, chemical composition, castings and foundries.
  2. The Most Common Cast Iron Grades Manufactured in China - on Jul. 26, 2012
    The followings are the most common gray iron and ductile iron grades produced by Dandong Foundry, and also for the most Chinese foundries.
  3. Advantages of Steel Casting - on Jul. 24, 2012
    Introducing the advantages of steel casting by Dandong Foundry in China, including the comparison with forged steel parts, welded parts and iron castings.
  4. ASTM A48 Class 25 Cast Iron - on Jul. 19, 2012
    ASTM A48 class 25 is a material grade of gray cast iron in USA, which is higher than class 20, but lower than class 30. Its UNS number is F11701. There are four specific grades as ASTM A40 class 25A, 25B, 25C and 25S.
  5. Machining surface finish chart, comparator, method, degree, Ra, Rz, RMS - on Jul. 18, 2012
    As for machining to iron and steel castings, the surface finish smooth degree is also an important requirement. The following is the conversion chart for Ra (um), Ra (micro inch), Rz (um), RMS and finish degree in China and USA, including the related finish methods.
  6. Large Cast Iron Castings - on Jul. 17, 2012
    Large cast iron castings mean the casting parts with unit weight higher than 500 kgs or larger than 1 meter. Because large iron castings have more weight, so will require sand molds to have higher strength. Therefore, most of iron foundries will produce them by resin sand casting process.
  7. Sand Casting vs Investment Casting - on Jul. 12, 2012
    The comparison between sand casting and lost wax investment casting process, including their raw materials, recycling, production costs, casting appearance, dimensional tolerance and characters.
  8. The Metal Foundry - on Jul. 05, 2012
    Dandong Foundry is the metal foundry, who has produced metal castings for over 50 years in China. The main products include gray iron, ductile iron and carbon steel castings with unit weight from several kgs to 2 tons.
  9. Foundry NZ - on Jul. 04, 2012
    Dandong Foundry has produced many iron and steel castings to New Zealand market. Some are grey iron and ductile iron castings, some are large carbon steel and mild steel casting parts.
  10. Chinese Cast Iron - on Jul. 03, 2012
    Chinese Dandong Foundry has produced over 2000 different types of cast iron parts in the past 50 days. The followings are some iron castings and their production processes.
  11. Casting Production - Processes, Costs and Companies - on Jun. 28, 2012
    Dandong Foundry has been engaged in casting production for over 50 years, mainly manufacturing grey iron, ductile iron and cast steel products. Herein, we will briefly introduce the metal casting production processes and related costs.
  12. Custom Cast Iron - on Jun. 26, 2012
    Making a brief introduction to the process of producing custom cast iron parts, the types of custom cast iron castings, and OEM manufacturers in China.
  13. Cast Iron, Cast Steel, Metal Castings, Production Prices, Foundries and Manufacturers - on Jun. 22, 2012
    Dandong Foundry in China has shared their experience to cast iron, cast steel materials, metal casting products, production processes and prices in the past years.
  14. Cast Metal - on Jun. 19, 2012
    Metal castings are the base of industry. There are many types of cast metal methods, patterns and casting parts.
  15. Sand Casting Foundries - on Jun. 14, 2012
    Introducing some sand casting foundries in USA and China, whose main products are various gray iron, ductile iron and steel sand castings.
  16. Cast Iron GGG40 - Ductile Iron - on Jun. 13, 2012
    Cast iron GGG40 is a low grade of ductile iron. Our foundry has produced this material for many years, and herein, we introduce its mechanical and chemical properties and some iron castings made by this material grade.
  17. Equivalent grades of gray iron, ductile iron, sg iron, nodular graphite iron - on Jun. 11, 2012
    This is a comparison table for the gray iron and ductile iron grades of various standards, including ISO, GB, ASTM, DIN, EN, JIS, UNI, NF, BS, IS, UNF, NBN, AS, SS, NS.
  18. Cast Iron Price - on Jun. 07, 2012
    Many clients asked us the cast iron price per kg or per ton, but it is very difficult to offer an accurate price before considering many factors and requirements. Herein, let us make a brief introduction to the cast iron price composition, cost calculation and price adjustment.
  19. Gray and Ductile Iron Foundries - on Jun. 01, 2012
    These are some iron foundries specializing to produce gray and ductile iron castings.



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