36mm En 10305 E235 Cold Rolled Seamless Precision Steel Tube

    EN10305 BK Precision Cold Drawn Seamless Steel Pipe     Brand : Zhongxing Steel Pipe (by ourselves)    Specification : OD18mm to 121mm , Thickness 2mm to 18mm    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:36-480mm WT:3-40mm 3. Chemical Compisition (%)

Steel grade	Chemical composition,%
	C	Si	Mn	P	S	Cr
				≤
St45	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.250
ST52(E355)	≤0.22	≤0.55	≤1.6	0.025	0.025	0.25
SAE1026	0.22-0.28	0.15-0.35	0.60-0.90	0.040	0.050	/
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.035	0.035	0.300
20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.250

4. Mechanical Properties

Delivery condition	BK Cold finished(hard)		BKS Cold drawn and stress-relieved
Steel grade	Rm Mpa	Elongation A5(%)	Rm MPa	ReH MPa	Elonggation A5(%)
ST45	≥550	≥5	≥520	≥375	≥15
ST52(E355)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥510	≥15
16Mn	≥640	≥5	≥600	≥520	≥14
20#	≥550	≥8	≥520	≥375	≥15

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.

Size of I.D	I.D Tolerance			Tolerance of wall thickness
	H8	H9	H10	±7.5% >210mm ±10%
30	+0.0330	+0.0520	+0.0840
>30-50	+0.0390	+0.0620	+0.1000
>50-80	+0.0460	+0.0740	+0.1200
>80-120	+0.0540	+0.0870	+0.1400
>120-180	+0.0630	+0.1000	+0.1600
>180-250	+0.0720	+0.1150	+0.1850
>250-315	+0.0810	+0.1300	+0.2100

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   Material : St 35,St45 , St 52     4. As per client’s request .   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     

Features	high-precision and could be small order Small size No oxide layer outside and inside of the tube No reveal under high- pressure good glossiness on surface No deformation under Cold bending Flattening without crack
Usage	Mainly used to produce Pneumatic or hydraulic component ‘s products ,like Cylinder or oil cylinder
Advantage	Precision Seamless Pipe application could save steel material , improve Processing effect , reduce the procedure and equipment investment , save cost and time to improve production production capacity

    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 !        

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