Assertion: radial tire's cord | /r/MadeOf | steel cords
Facets:
Source sentences:
text: For to the belt, there are several cases, one of which is a first layer composed of an even number of cord plies, usually two cord plies each containing steel cords inclined at a small angle with respect to the equatorial plane of the tire.
text: In the conventional heavy duty low-section pneumatic radial tires, the aforementioned first belt layer or at least two cord plies each containing steel cords, in many cases, inclined at a relatively small angle of 10°-40° with respect to the equatorial plane of the tire, the cords of which being crossed with each other, are used as a main reinforcement of the belt, so that the rigidity of the belt becomes considerably insufficient in its both side portions as compared with the central portion in case of a lower aspect ratio, and consequently the tread is brought to a concave shape.