About POLIKARPOV M I
About MEDINSKAYA I P
About LAMZIN A G
About MARKOV S G
About SUKHAREV L G
About KIRILENKO E I
About Khimicheskoe i Neftyanoe Mashinostroenie
About low alloy steel
About lamellar tear
About Welding design,welded structures
About Metal structures
About 鋼
About 内部欠陥
About 厚
About 肉
About 溶接構造物