PRODUCT

Products: Cold-drawn seamless tube is used for high dimensional accuracy mechanical structure, hydraulic equipment and good surface finish of precision cold drawn seamless tube. Precision seamless tube manufacturing mechanical structure or hydraulic equipment, can greatly reduce machining time, improve material utilization, and help to improve product quality.

Ruoyu get smaller size and better quality, seamless, must be cold-rolled, cold drawn or a combination of the two. Cold rolled normally on two-roll mill, steel circular hole in the variable cross-section hole tapered slot and does not move the head consisting of rolling. Drawing is usually performed on 0.5 ~ 100T single chain or double chain drawing machine.

Quality carbon structural steel seamless pipe cold call, the main No. 10, 20, 35, 45 steel, in addition to chemical composition and mechanical properties do hydrostatic testing, curling, flaring, flattening and other test.

Appearance quality: steel inner and outer surface shall not have cracks, folded, rolled off, separation, hairline and scarring defects. These defects should be completely removed, the outer diameter of the wall and not over after clearing the negative deviation.