Product Details

Product Description

Cold drawing precision seamless steel tube is used for mechanical structure, hydraulic equipment size precision and surface finish good precision cold drawing seamless pipe.Selecting precision seamless pipe to make mechanical structure or hydraulic equipment can greatly reduce the machining time, improve the material utilization, and improve the product quality.

Material	20# ,45# ,Q345B,Q345D,25Mn,27sIMn,30CrMo, E355/st52, SAE1026...
Standard	DIN2391, EN10305, ASTM A519, GB/T 8713, GB/T3669...
Specification	OD ID
Specification	30-350mm 2-30mm
Straightness	1/1000 1/500
Surface	polished or coating
Delivery time	25-45days
Packing	Bundled with knitted plastic bag, wooden cases or according to customers' request.
application	Fluid and gas transport,decoration, construction,medical equipment, aviation, boiler heat-exchanger and other fields

Detailed Images

Steel Grade	C	Si	Mn	P	S	Cr	Ni	Cu	Al
20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0035	0.250	0.250	/	/
45#	0.42-0.50	0.17-0.37	0.50-0.80	0.035	0.035	0.250	0.300	/	/
Q345B	≤0.2	≤0.5	1.00-1.60	0.030	0.030	0.300	0.250	0.08	/
Q345D	≤0.2	≤0.5	1.00-1.60	0.030	0.030	0.250	0.250	0.150	0.015
25Mn	0.22-0.29	0.17-0.37	0.70-1.00	0.035	0.035	/	/	/	/
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.035	0.035	0.300	0.300	/	/
E355	≤0.22	≤0.55	≤1.6	0.025	0.025	0.250	0.250	/	/
SAE1026	0.22-0.28	0.15-0.35	0.60-0.90	0.040	0.050	/	/	/	/

steel grade	Rm Mpa BK+S	ReH Mpa BK+S	Elongation BK+S	Rm Mpa(BK)	Elongation(BK)
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
16Mn	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5
ST45	≥520	≥375	≥15	≥550	≥5
E355	≥600	≥520	≥14	≥640	≥5
SAE1026	≥600	≥510	≥15	≥640	≥5

seamless pipe normal size

*5570**	*100114**	*150180**	*200225**
*6070**	*100115**	*155180**	*200230**
*6075**	*100120**	*160175**	*200245**
*6078**	*100125**	*160180**	*200250**
*6373**	*105125**	*160185**	*220250**
*6375**	*110125**	*160190**	*220270**
*6376**	*110130**	*160195**	*225250**
*6378**	*115130**	*165190**	*240273**
*6580**	*115135**	*165205**	*250290**
*7080**	*120140**	*170200**	*250300**
*7082**	*125140**	*180200**	*260300**
*7085**	*125145**	*180205**	*280323**
*7090**	*125150**	*180210**	*280355**
*7590**	*130150**	*180215**	*300350**
*8092**	*130155**	*180220**	*200213**
*8095**	*130160**	*185205**	*200216**
*80100**	*135160**	*185215**	*250266**
*85100**	*140160**	*185220**	other size customize
*90105**	*140165**	*190210**	other size customize

Delivery Condition

1. BK(+C)

the final heat treatment after cold forming, threfore small steel pipe plasticly, the plasticly degree does not guarantee

2. BKS(+SR)

have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again

3. NBK(+N)

after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium

4. BKW(+LC)

after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)

5. GBK(+A)

after cold forming, annealing in non oxidizing medium protective gas

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Application