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	Lecture 22, Basic of Piping and Welding (Welding Imperfections-3) (Nur Mohammad-Learning Hub) View
	Lecture-20, Basic of Piping and Welding (Welding Imperfections-2) (Nur Mohammad-Learning Hub) View
	Lecture 23, Basic of Piping and Welding (Welding Imperfections-4) (Nur Mohammad-Learning Hub) View
	Lecture-3 Basic of Piping and Welding (Nur Mohammad-Learning Hub) View
	Lecture 24, Basic of Piping and Welding (Welding Imperfections-5) (Nur Mohammad-Learning Hub) View
	Lecture 19, Basic of Piping and Welding （Welding Imperfections-1） (Nur Mohammad-Learning Hub) View
	Lecture 26, Basic of Piping and Welding (Welding Imperfections-7) (Nur Mohammad-Learning Hub) View
	Lecture 5, Basic of Piping and Welding. (Nur Mohammad-Learning Hub) View
	Lecture 27, Basic of Piping and Welding Welding Imperfections 8 (Nur Mohammad-Learning Hub) View
	Lecture - 18, Basic of Piping and Welding (Size of Weld) (Nur Mohammad-Learning Hub) View