Black phosphated after normalizing makes the tube better in mechanical performance and anti-rust ability. The surface clour is evenly disctributed. Two ends sealed by caps which can prevent the inner surface from dust. This product is widely used for hydraulic system.
Outer Diameter: 1.5mm-60mm
Wall Thickness: 0.3mm to 10mm
Standards |
TDR Standards |
Steel Grades |
---|---|---|
DIN |
2391-1
73000 |
ST35/45/52 |
GB/T |
8162 |
10/20/16Mn/35/45/ |
EN |
10305-1 |
E215/235/355/255 |
ASTM |
A822-A450 |
A822 |
ISO |
8535 |
ST 35 / 45 / 52/ 37.4 / 44.4 /52.4 |
SAE |
J524 |
SAE J524 |
ASTM |
A179-A450 |
A179 |
JIS |
G3445 |
STKM11A/STKM12A/STKM12B/ STKM12C/STKM13A/ STKM13B/STKM13C |
NF |
A49-310 |
TU37b/TU52b |
BS |
3602 |
CFS 360 |
BS |
6323 |
CFS2/CFS3/CFS4/CFS5 |
Delivery condition: NBK (+N)
NBK (+N) Normalized.
After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.
Certificates: according to EN 10204 3.1
Inspection Items: Tensile stength, Yield stength, Elongation, Flattenging, Flaring
Chemical analysis, Hardness and other upon request
100% Eddy Current Test, 100% Size checking and surface checking