tg&p steel round bar and rod for shaft

    TG&P means turning, grinding and polishing processing, grinding is centerless grinding.  TG&P steel round bar is turned, ground and polished steel round bar. It is one kind of bright steel round bar. Sometimes, it is also quenched and tempered steel to get higher strength. TG&P steel round bar has best bright surface, most precision diameter tolerance and best straightness which can be diretly used as shaft or used in CNC machines. The bright surface with small surface roughness can help the bar to be surface coated easily and beautiful. The good straightness can help the bar to be used in CNC machines automotively. Using TG&P steel bar can save your processing cost and time to the most. 

    TG&P steel round bar steel material and grades we supply including 1018, 1020, 1035, 1040, 1045, 1050, 1055, 1060, 4120, 4130, 4140, 4150, 4340, 8620 etc. We produce both carbon and alloy TG&P steel round bars to meet your demands.

    For TG&P alloy steel round bar such as 4140 TG&P steel bar, we can also do heat treatment, such as pre-hardened or Quenching and Tempering which can guarantee and control the TG&P steel bar mechanical properties. You will not need to do more processing when you get our bars. 

    Some major techanical datas of TG&P steel round bars is as following:

A. Diameter tolerance: f7 according to ISO268

B. Surface roughtness: 0.8um max

C. Straightness: 0.2mm/m to 0.5mm/m

    For TG&P high quality bright steel bars, we will control the qualtity by:

A. Diameter tolerance inspection during the production

B. Straightness inspection during the production

C. Eddy testing or MPI testing after production

D. UT testing can also be done

E. Mechanical properties testing

    For TG&P high quality steel bar, the package is also quite important. There are four kinds of packages to avoid the surface scratches, anti-rusty and bending such as plastic rings for each bar, film wrapped for each bar, plastic bags wrapped for each bundle and wooden box is nessary if required.