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Black phosphated cold drawn seamless tube

Black phosphated cold drawn seamless tube

 

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
2391-2
1629
1630
17200

 

 

 

73000

ST35/45/52

ST37.4/44.4/52.4

C15/CK15
C22
C35
C45
25CrMo4
34CrMo4
42CrMo4
50CrMo4
ST37.4/44.4/52.4

GB/T

8162
8163
3639

10/20/16Mn/35/45/
40CrMo and other grade market available

EN

10305-1
10305-2
10305-4
10216-2

E215/235/355/255
E215/235/355/255
E215/235/355/255
P235GH/P265GH/16Mo3

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