High reputation DIn2391 St52 Cold drawn seamless steel tube
1.Standard:DIN 2391 EN10305
2.Material:ST52 St52.4 St45 e355
3.MOQ:10MTS
4.ISO&BV

We offer an extensive range of seamless precision steel tubes. The seamless precision steel tubes can be used for a wide range of precision mechanical spare for car and cylinder accord to standard DIN2391/ EN10305-1/ GB/T3639-2009.

Processing:Cold drawn or cold rolled (Burnish or other requirements can be agreed)

Length: ≤10m

Straightness:0.3~0.8mm/m

Wall Thickness tolerance:±10%

Inner roughness :0.8~1.6μm

Dimensional Accuracy:

1.Tolerance on Inner Diameter:H8  H9

2.Tolerance on Wall Thickness:

Diameter: >40 +/-0.2mm

Diameter:40 <100 +/-0.3mm

Diameter >100 +/-0.5mm

3.Surface Roughness:Ra=0.3~0.4micron

Length:Random length4.5-6m or as per order confirmation

Mill Test Certification :En10204/3.1B

4.Delivery condition:BKS

Product One:
Product name: High pressure fuel pipe
Standard: DIN2391-1 DIN10305-1
Material: ST35 ST37.4 ST52.4
Outer diameter: 4mm-60mm
Wall thickness: 0.5mm-8mm
Application: many used in diesel engine, gasoline engine oil line

Product two:
Product name: Black phosphated seamless steel pipe
Standard: DIN2391-1 DIN10305-1 ASTM A179 ASTM A192
Material: ST35 ST37.4 ST45 ST55 CK45 ST52.4
Outer diameter: 4mm-60mm
Wall thickness: 0.5mm-8mm
Application:  Used in hydraulic syst erm, nested card connector(pipe joints) with matching.

1)Synopsis of Process Routing: Quality carbon steel,cold drawn , bright heat treatment without oxidization (NBK status) , nondestructive testing, in the wall honing and inside flushing under the high pressure, antirust oiling outside surface, plastic capping on both ends.

2)Main Features: high precision, excellent brightness, no oxidization on the outer and inner walls after heat treatment, high cleanness inside wall. The steel tube is able to stand high pressure. No deformation after cold bending, no crack after flaring and flattening . The complicated geometrical forming and machining can be realized. Color of tube: gray with white.

 3)Main Application:to be used in hydraulic system, automobile and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required 

I want to tell you we are not only sales of steel pipe,but also quality controller of steel pipe.

Our aim is when you hear about Xinpeng,you know it is steel pipe

Our sucessul way is small profite but quick turnover !

Xinpeng Have passed ISO9001 2008 verified

Any need or intrest  please feel free to contact us!