Standards for billet
Standards for billet
GOST 4693 Hot-rolled steel square billet
GOST 4728 Axle billets for 1520 mm gauge railway rolling stock
GOST 6143 Axle billets for tram cars
GOST 23270 Tubes-billets for mechanical treatment
GOST 30272 Black collar axles (profile stock) for 1520mm gauge railways
OST 14-21 Заготовка трубная из углеродистых, низколегированных и легированных сталей
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