Major OD 16mm and 12mm others also available
Tube size can be designed as per customers requirements
Best hardness and machining ability
Frequent sizes for usage
ID 4.4mm OD 12mm
ID 5.4mm OD 12mm
ID 5.4mm OD 15mm
ID 6.3 mm OD 15mm
ID 6.3 mm OD 16mm
ID 7.55mm OD 16mm
Others as per customer's requirements
ID tolerance can be controled within +/-0.02
Brigtht and Shinning inner and outer surface
Steel Grade: S45C, 4130,4140, 30CrMo, 42CrMo, 42CrMo4 and others
Good quality tubes consume less button for grooving
Other SIZEs for our production:
Outer Diameter: 1.5mm-60mm
Wall Thickness: 0.3mm to 10mm
Certificates:
According to EN 10204 3.1
Inspection Items: Tensile stength, Yield stength, Elongation, Flattenging, FlaringChemical analysisEddy Current
Test 100%, Size and surface checking 100%Other test item can be arranged as per request
DELIVERY CONDITIONS:
The tubes can be produced in the following delivery conditions:
BK (+C) Cold finished/hard (cold finished as drawn).
No heat treatment after the last cold forming process.
BKW (+LC) Cold finished/soft (lightly cold worked)
After the last heat treatment there is a light finishing pass (cold drawing).
BKS (+SR) Cold finished/stress relieve annealed.
After the final cold forming process the tubes are stress relieve annealed.
GBK (+A) Annealed.
After the final cold forming process the tubes are annealed in a controlled atmosphere.
NBK (+N) Normalized. (Mainly focus on)
After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere