en standard 10305-3 30mm diameter seamless round steel tube

din DIN 2391/EN 10305 Cold Drawn Carbon Precison Seamless Steel Pipe





din st45.8/ st42.2 Carbon Steel Pipe



Application: Precision machinery, hydraulic equipment, auto parts.


Standard:



DIN2391-1: Seamless Precision Steel Tube.


EN 10305-1: Steel tubes for precision applications


DIN2391-1: Seamless Precision Steel Tube.


EN 10305-1: Steel tubes for precision applications



Steel grade: DIN2391-1(ST35, ST45, ST52), EN10305-1(E215, E235, E355).


Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers' requirements .



Brand : Zhongxing Steel Pipe (by ourselves)





Specification : OD10mm to 121mm , Thickness 2mm to 30mm





0ur products are offered in standard as well as customized specifications given as per client.


1.Section shape : Round


2. Material Specification and Ref. Document


ST52,BK+S OR NBK,DIN2391


OD:10-121mm WT:2-30mm


3. Chemical Compisition (%)

Grade	Chemical Composition(%):
	C max	Si max	Mn	P max	S max
St 35	0.17	0.35	≥0.40	0.025	0.025
St 45	0.21	0.35	≥0.40	0.025	0.025
St 52	0.22	0.55	≤1.60	0.025	0.025
E215	0.10	0.05	0.70	0.025	0.025
E235	0.17	0.35	1.2	0.025	0.025
E355	0.22	0.55	1.6	0.025	0.025

4. Mechanical Properties

Steel grade	BK(+C)		BKW(+LC)		BKS(+SR)			GBK(+A)		NBK(+N)
	RmN/mm min	min	RmN/mm min	min	N/mm min	ReH N/mm min	min	N/mm min	min	N/mm min	ReH N/mm min	min
St35	480	6	420	10	420	315	14	315	25	340-470	235	25
St45	580	5	520	8	520	375	12	390	21	440-570	235	21
St52	640	4	580	7	580	420	10	490	22	490-630	355	22
E215	430	8	380	12	380	280	16	280	30	290-430	215	30
E235	480	6	420	10	420	350	16	315	25	340-480	235	25
E355	640	4	580	7	580	450	10	450	22	490-630	355

5. Supply Condition


Cold drawn seamless steel tube, stress relieved and honed or skived roller burnished


6. Surface Roughness


Ra = 0.4~0.8 Micron


7. Tolerances of Inner Dia.


8. Tolerance on Outer Dia.


≤ Dia 40 +/-0.2 mm


≥ Dia 40 ≤ Dia 100 +/-0.3mm


≥ Dia 100 +/-0.5mm


9. Appearance


Tube shall have a smooth internal and external surface consistent with cold working process, tube inner surface should be free from rust, scratches and other surface irregularities.


10. Scope


Hydaulic cylinder tube for swivel crane, injection machine and construction machine application





Length: Length for smls pipe is 4.8meters to 12meters .


generally 5-5.8meters random length for 20ft ctnr ,6-12m random length for 40ft ctnr, or fixed length like 5.8meters , 6meters ,11.8meters as per demand .


Ends : Plain ends, beveled ends


Raw material :Steel bar














Specialized in seamless steel pipe for more than 21years including exporting for more than 8years, we achieved much experience for good service








Seamless steel tube or pipe is our mainly products








Our company is a professional manufactuer in steel pipe .


We will provide you the excellent quality and best price with better professional service !

Contact us if you need more details on Round Steel Tube. We are ready to answer your questions on packaging, logistics, certification or any other aspects about En Standard 10305-3 Tube、10305-3 30mm Diameter Tube. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Precision Steel Pipe