Carbon Seamless Steel Tube 34crmo4 42crmo4 42crmo Cold Rolled Steel Pipe

Alloy steel tubes 34CrMo4 42CrMo4

Seamless steel tubes with alloy steel grade 34CrMo442CrMo4

34CrMo4:

C: 0.30-0.37

Si: 0.40

Mn: 0.40-0.90

P: 0.035

S: 0.035

Cr: 0.90-1.20

Mo: 0.15-0.30

42CrMo4:

C: 0.38-0.45

Si: 0.40

Mn: 0.60-0.90

P: 0.035

S: 0.035

Cr: 0.90-1.20

Mo: 0.15-0.30

42CrMo:

C: 0.38-0.45

Si: 0.17-0.37

Mn: 0.50-0.80

Cr: 0.90-1.20

Mo: 0.15-0.25

 

 

 

QUALITY CONTROL

1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8~ Packing and Stocking.

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.