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Standard Chart of Low-Carbon Steel Defects (GBT1979-2001) 18

Wallchart of the criteria for rating structural steel for low-multiple organizational defects (gb/t1979-2001) 18

Figure I Rating   diameter or edges less than 40 mm

Figure II Ratings   40-150 mm in diameter or edge

Figure III Ratings 150-250 mm in diameter or by edge

Figure IV Ratings   250 mm in diameter or by edge

Figure VI Ratings   All sizes, steel

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