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 Properties

Size Accuracy

Enhanced Appearance

Uniform Micro-structure

Easier To Machine

Superior Finish In Subsequent Manipulations

10305-4 seamless Steel Tubes Applications

1.Hydraulic Cylinders

2.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) mm

Specified 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 Tubes

10305-4 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 analysis

Tensile 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 um

2: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 pieces

2 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)

Contact Fushun 10305-4 Seamless Steel Tubes Today

Contact us for more information regarding precision steel tubing specifications and product options, or request a quote for further pricing details today.