EN10305-2 Welded Precision Cold Drawn Steel Tubes

 

Application for Welded Carbon and Alloy Steel Tube: 

• for Auto industry
• for machinery use
• Oil Cylinder Tube
• Motorcyle shock absorber                                                    
  Auto shock absorber innder cylinder
• Telescopic Cylinders

Applications of Welded Carbon and Alloy Steel Tube: for Auto Industry/for Machinery Use/Oil Cylinder Tube/Motorcyle Shock Absorber
Auto shock absorber innder cylinder/Telescopic Cylinders

                                            
Size range: O.D.:6-420mm     W.T.:1-50mm      L:max12000mm                                                    
 

Welded Carbon and Alloy Steel Tube Supplying Steel Grade:

E155, E195, E235 E275, E355

 

Delivery Condition of Welded Carbon and Alloy Steel Tube:

+C, +Lc, + SR, +A, +N

 

Welded Carbon and Alloy Steel Tube Production Method:

DOM, ERW+ Cold Drawn

ID Honing + Roller Burnish+ Skiving

 

Appearance of Welded Carbon and Alloy Steel Tube:

The internal and external surface finish of the tubes is smooth, while the Weld Seam is somehow not visible or tangible.

The ID surface with roughness Ra≤4μm,  the best ID smoothness we could reach Ra≤0.8μm

The inner surface can be measured and reported if this is requested by the purchaser before PO.

  
                                      

Mechanical properties at room temperature
Steel Grade		Minimum values for the delivery conditiona b
Steel Name		(+Cc)		(+LCc)		(+SR)			(+Ad)		(+N)
		Rm Mpa	A %	Rm Mpa	A %	Rm Mpa	ReH Mpa	A %	Rm Mpa	A %	Rm Mpa	ReHe Mpa	A %
E155	1.0033	400	6	350	10	350	245	18	260	28	270-410	155	28
E195	1.0034	420	6	370	10	370	260	18	290	28	300-440	195	28
E235	1.0308	490	6	440	10	440	325	14	315	25	340-480	235	25
E275	1.0225	560	5	510	8	510	375	12	390	21	410-550	275	21
E355	1.0580	640	4	590	6	590	435	10	450	22	490-630	355	22

                                                  
Note: Special steel grade is also available, according to customer request.

 

  

 

  

 

 

Quality Inspection standard and Normative references:

EN10002-1, Metallic materials- Tensile testing- Part 1: Method of test at ambient temperaure

EN10020, Definition and classification of grades of steel

EN10021, Gengeral technical delivery requirements for steel and iron products.

EN10027-1, Designation systems for steel - Part 1: Steel names, principlal symbols.

EN10027-2, Designation systems for stee l- Part 2: Numerial system

EN10052, Vocabulary of heat treatment terms for ferrous products

EN10204, Metallic Products - Types of inspection documents

EN10233, Metallic materials - Tube - Flattening test

EN10234, Metallic materials - Tube - Drift expanding test

EN10246-1, Non-Destructive testing of steel tubes - Part 1: Automatic electromagnetic testing of seamless and welded(except suberged arc-welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness

EN10246-3, Non-Destructive testing of steel tubes - Part 3: Automatic eddy current testing of seamless and welded ( except submerged arc-welded) steel tubes for the detection of imperfections

 

EN10246-5, Non-Destructive testing of steel tubes - Part 5: Automartic full peripheral magnetic transducer /flux leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection of longtitudinal imperfections

 

EN10246-7, Non-Destructive testing of steel tubes - Part 7: Automartic full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal imperfections.

 

EN10256, Non-Destructive testing of steel tubes - Qualification and competence of level 1 and 2 non-destructive testing personnel

 

EN ISO377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing ( ISO 377:1997)

 

EN ISO 2566-1, Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels ( ISO2566-1:1984)

 

ENV10220, Seamless and welded steel tubes - Dimension and masses per unit length.

 

EN10266, Steel Tubes, fittings and structural hollow sections - Definition and Symbols for use in products standards