Process equipment distinction: cold-drawn seamless steel pipe is usually 0.5-100T single-chain or double-chain cold-drawn machine. The finished seamless steel pipe is usually rolled on a twin-roll mill, in which the steel pipe is rolled in an annular hole formed by a variable cross-section circular hole and a fixed conical head.


Product differences: Cold-drawn seamless steel pipe can produce thin-walled cold-drawn steel pipe, cold-drawn special-shaped steel pipe, such as plum blossom pipe, hexagonal pipe, bread pipe, etc. Finishing seamless steel pipe relative to the wall thickness range is large, now can complete 0.8-40 mm rolling.


Wall thickness deviation: Cold-drawn seamless steel tube cold-rolled seamless steel tube wall thickness deviation is small, so cold-rolled precision seamless steel tube wall thickness requirements, diameter and size deviation strict customers, choose cold-rolled better.