Non-mandrel drawing is a method widely used in cold drawn pipe production.
棒 拔制是冷拔钢管生产中应用最广泛的一种生产方法。
A new over-long pipe cold drawing mill with three pipes drawn simultaneously, which has an unique structure and a display device for drawing load, is described.
本文介绍了一种结构独特，可显示拔制负荷的新型超长三线冷拔机。
Spiral drill pipe: Cold-drawn forming a blade, anneal, good toughness, and durability.
螺旋钻杆：冷拉一次成型叶片，不退火，韧性好，耐用。
Spiral drill pipe: Cold-drawn forming a blade, anneal, good toughness, and durability.
螺旋钻杆：冷拉一次成型叶片，不退火，韧性好，耐用。
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