PIPE QUALITY   S   107:1990 เหล็กท่อ (Pipe) เหล็กท่อดำ […]

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RECTANGULAR TUBE QUALITY    TIS   107:1990              […]

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SQUARE TUBE QUALITY    TIS   107:1990                เห […]

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SHEET PILES QUALITY    JIS A   5228:1988               […]

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PLATE QUALITY    JIS G   3101                      Grad […]

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CHECKRED PLATES GRADE   SS400 เหล็กแผ่นลาย (Checkered P […]

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LIGHT LIP CHANEL QUALITY    TIS   1288:1994เหล็กตัวซี ( […]

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CUT – T GRADE        SS 400  SS 540 เหล็กตัวทีคัต […]

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ANGLES QUALITY     JIS G   3192:1990 JIS G   3101:1995 […]

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CHANNELS QUALITY     JIS G   3192:1990                 […]

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