EN10305 DIN2391 GB/T699-2008 Standard Cold Rolled Precision
Seamless Steel Pipe For Machinery
Outer Diameter: 14-168mm
Wall Thickness: 2-12mm
Main Material: AISI 1010 1020 1035 1045 40Cr 42CrMo 16Mn 27SiMn 16Mn
Standard: EN10305 DIN2391 GB/T699-2008
Cold Rolled Precision Steel Pipe is a kind of high-precision steel
pipe material processed by cold drawing or hot rolling. Because
there is no oxide layer on the inner and outer walls of the
precision steel pipe, no leakage under high pressure, high
precision, high finish, no deformation after cold bending, no
flaring, no cracks in flattening, etc.
| Product name | Cold Rolled Precision Steel Pipe |
| Thickness | 2-12mm |
| Diameter | 14-168mm |
| Standard | EN10305 DIN2391 GB/T699-2008 |
| Material | AISI1010 1020 1035 1045 40Cr 42CrMo 16Mn 27SiMn 16Mn |
| Surface | Oiled and Bright |
| Packing | Standard Export Packing, Or According to Customer Requirements. |
| Application | Precision Machinery,Automobiles,Motorcycles,Electric Vehicles Petrochemicals |
| Port of delivery | QINGDAO, TIANJIN and SHANGHAI |
| Payment term | T/T or L/C |
| Certificate | ISO 9001,SGS |
| Lead time | 20-45days according to order quantity |
| MOQ | 3Ton |
| Type | Seamless |
| Technique | Cold Rolled |
| Inspection | Acceptable |
| Price term | FOB,CIF,CFR |
Application
Automobiles
Motorcycles
Electric Vehicles
Petrochemicals
Electric power
Ships, Aerospace
Bearings
Pneumatic Components
Medium and Low Pressure Boiler Pipe
Steel Sleeves
Bearings, Hydraulics
Machining and other fields.
Standard requirement
1. Appearance of cold-rolled steel pipe
Cold-rolled steel pipes are not allowed to have any traces of
cracks on the outer surface and its inner surface, even if it is
very slight, and on its inner and outer surfaces, There can be no
fold marks, rolling marks, delamination marks and scarring. If any
of these problems appear on the surface, it is unqualified, and
these marks need to be eliminated again, so as to achieve In a
perfect state, the most important thing is that when cleaning these
defects, the depth of cleaning has a certain limit, and the
thickness it cleans cannot be greater than its allowable range.
For cold-rolled steel pipes, the cleaning value of the steel pipe
cannot be greater than 4% of the nominal wall thickness, that is,
if the wall thickness of the steel pipe is 1.4 mm, the allowable
cleaning thickness is below 0.05 mm. not more than 0.05 mm.
2. Features and functions
The use and application of cold-rolled steel pipes can save a lot
of steel, and can also improve the efficiency of production and
processing of products.
The use of cold-rolled steel pipes also greatly saves a lot of
energy. High-precision steel pipes can reduce processing time,
improve material utilization, and improve product quality.
Process
Tube blank - inspection - peeling - inspection - heating -
perforation - pickling and passivation - grinding - lubrication and
air drying - cold rolling - degreasing - cutting head - inspection
- marking - Product packaging.
Delivery Conditions
BKS(+SR): After the final cold drawing process there is a stress
relieve heat treatment in a controlled atmosphere.
NBK(+N): After the final cold drawing operation the tubes are
normalized in a controlled atmosphere.
GBK(+A): After the final cold drawing process the tubes are
annealed in a controlled atmosphere.
BK(+C): No heat treatment after the final cold drawig process.
BKW(+LC): After the final heat treatment there is a suitable
drawing pass.
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