Audited Supplier
E235 1.0308
Technical/Sample/Quality
Seamless
Hot-Rolled+Cold-Drawn
Carbon Steel
as Required
Hydraulic/Automobile Pipe, Machinery Industry, Special Purpose
Round
Available
3.1 or 3.2 Certificate
SHUNFU
Seaworthy Standard Package
8-200mm
China
Product Description
10305-4 Seamless Cold Drawn Steel Tube For Hydraulic And Pneumatic Power Systems
10305-4 Seamless Steel Tubes manufacture
The tubes shall be manufactured from hot finished seamless tubes by cold drawing. Other suitable methods of cold working are permitted. The tubes shall be delivered in the delivery condition +N which means that after the final cold drawing operation the tubes are normalized in a controlled atmosphere.All non-destructive testing (NDT) activities shall be carried out by qualified and competent level 1, 2 and/or 3 personnel authorised to operate.Benefits Of 10305-4 seamless Steel Tubes
Higher Strength & Hardness PropertiesSize Accuracy
Enhanced Appearance
Uniform Micro-structure
Easier To Machine
Superior Finish In Subsequent Manipulations
10305-4 seamless Steel Tubes Applications
1.Hydraulic Cylinders2.Auto and Truck Axles
3.Suspension parts and shock absorbers
4.High Speed Shafts and rollers
5.Bearings and Spacers
6.Roll cages
7.Agricultural components and many other machined tubular parts.
10305-4 Seamless Steel Tubes Sizes and tolerances
Specified outside diameter with tolerance: 4 (+/-0,08) to 300 (+/-0,35) mmSpecified inside diameter with tolerance: 2 (+/-0,15) to 100 (+/-0,35) mm
Lengths: standard length of 6 m ; exact length ; other length
Straightness: The deviation from straightness of any tube length L shall not exceed 0,0015 L. Deviations from straightness over any one metre length shall not exceed 3 mm.
Standards
BS EN 10305-4 specific requirements for cold drawnseamless Steel Tubes10305-4 Seamless Steel Tubes Chemical Component
| Name | Number | C | Si | Mn | P | S |
| E215 | 1.0212 | 0,10 | 0,05 | 0,70 | 0,025 | 0,015 |
| E235 | 1.0308 | 0,17 | 0,35 | 1,20 | 0,025 | 0,015 |
| E355 | 1.0580 | 0,22 | 0,55 | 1,60 | 0,025 | 0,015 |
10305-4 Seamless Steel Tubes Mechanical Property
| Steel grade | Yield strength | Tensile strength | Elongation | |
| Name | Number | ReH min. MPa | R m min. MPa | Amin. % |
| E215 | 1.0212 | 215 | 290 to 430 | 30 |
| E235 | 1.0308 | 235 | 340 to 480 | 25 |
| E355 | 1.0580 | 355 | 490 to 630 | 22 |
10305-4 Seamless Steel Tubes Appearance
The internal and external surface finish of the tubes shall be typical of the manufacturing process and the heat treatment, and it shall be such that any surface imperfections such as ridges, dents or shallow grooves requiring dressing can be identified. It shall be permissible to dress, by grinding or machining, surface imperfections provided that, after doing so, the dimensions are within the specified tolerances. All dressed areas shall blend smoothly into the contour of the tube. Surface imperfections which encroach on the specified minimum wall thickness shall be considered defects and tubes containing these shall be deemed not to conform to this part of EN 10305.The tubes shall have smooth outer and inner surfaces with a roughness Ra 4 um, unless a reduced roughness of Ra 2 um is specified for the inner surface is specified.Preparation of ends
The tubes shall be delivered with square cut ends. The ends shall be free from excessive burrs.10305-4 Seamless Steel Tubes Inspection
Chemical analysisTensile test
Flattening test
Drift expanding test
Dimensional inspection
Visual examination
NDT for verification of leak tightness
10305-4 Seamless Steel Tubes Protection
The tubes shall be delivered with a temporary protection against corrosion.The tubes shall be phosphatized before temporary protection.
The tube ends shall be protected with plugs or caps.
10305-4 Seamless Steel Tubes Option
1:reduced internal roughness of 2 um2:lengths other than 6 m
3: alternative marking
4: protection by phosphatization
5:protection by galvanization and chromatization type blue-white
6:protection by galvanization and chromatization type yellow
7:protection by galvanization and chromatization type olive green
8:protection of tube ends
9:special packaging
Other Services
1 Cutting: Small pieces2 End: Plaint or Beveled or threaded
3 CNC Machine: Produce as your drawing
4 Package: Bare/Nylon/Canvas/Wooden
5 Payment:T/T, L/C, O/A(request credit)
6 Transport:FOB/CFR/CIF/DDU/DDP (train/ship/Air)
