159. Types of Steel and Their Manufacture ตอนที่ 3
ที่มา : George E. Linnert. (1994). Welding Metallurgy Carbon and Alloy Steels. Volume I Fundamentals. Fourth Edition. American Welding Society. GML Publications Hilton Head Island, South Carolina, USA.
159. Types of Steel and Their Manufacture ตอนที่ 2
ที่มา : George E. Linnert. (1994). Welding Metallurgy Carbon and Alloy Steels. Volume I Fundamentals. Fourth Edition. American Welding Society. GML Publications Hilton Head Island, South Carolina, USA.
159. Types of Steel and Their Manufacture ตอนที่ 1
ที่มา : George E. Linnert. (1994). Welding Metallurgy Carbon and Alloy Steels. Volume I Fundamentals. Fourth Edition. American Welding Society. GML Publications Hilton Head Island, South Carolina, USA.
