The cold heading steel coil generally is low and medium carbon quality steel and alloy structure steel to manufacture various standard mechanical element and fastener by cold heading forming.
冷镦钢盘条一般为低、中碳优质碳素结构钢和优质合金结构钢，用来冷镦成型制造各种机械标准件和紧固件。
2
Meanwhile, the introduction of the magnetic pressure distribution into the formingcoil design brought an obvious improvement of the coil service life in technology experiments.
将受力分布引入成形线圈设计，有效地提高了工艺实验中线圈的使用寿命。
3
Piling steel pipe, also known as drill pipe, is transcribed, or strip steel plate riveted through the coil after forming the pipes lead.