Cold Rolled Seamless Steel Tube
Cold drawn seamless steel pipe is a precision cold drawn seamless pipe with high dimensional
accuracy and good surface finish for mechanical structure and hydraulic equipment. Selecting
precision seamless pipe to manufacture mechanical structure or hydraulic equipment can greatly
save machining hours, improve material utilization and improve product quality.
Standred:
EN10305-1
EN10305-1 ---- Delivery conditions
Designation | Symbol | Description |
Cold drawn/hard
| +C | No heat treatment after the final cold drawing process |
Cold drawn/soft
| +LC | After the final heat treatment there is a suitable drawing pass |
Cold drawn and stress relieved | +SR | After the final Cold drawing process there is a stress relief heat treament in a controlled atomsphere |
Annealed | +A | After the final Cold drawing process the tubes are annealed in a controlled atomsphere |
Normalized | +N | After the final Cold drawing operation the tubes are normalized n a controlled atomsphere |
Manufacturing method:
According to different production methods, it can be divided into hot rolled pipe, cold rolled
pipe, cold drawn pipe, extruded pipe, etc. The biggest difference between cold drawn seamless
steel pipe and hot rolled seamless steel pipe is that the precision of cold drawn seamless
steel pipe is better than that of hot rolled seamless steel pipe. The general precision of cold
drawn seamless steel pipe is about 20 wires, while the precision of hot rolled seamless steel
pipe is about 100 wires. Therefore, cold drawn seamless steel pipe is the first choice for
mechanical processing and manufacturing industry and parts manufacturing industry.