long steel products chemical mechanical properties billet size 130 x 130 mm 150 x 150 mm 200 x 200 mm length 6 16 m reinforcing steel bar diameter 8 40 ...
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...Long steel products chemical mechanical properties billet size x mm length m reinforcing bar diameter threaded helical rod product catalogue for carbon qualities composition standard c mn si p s cr max sae j ni cu mo v n ceq...