DIN2391 St52.3 Honed Tube and Skived Tube for Hydraulic Cylinder

Basic Info

Type	Seamless
Technique	Cold Drawn
Material	Carbon Steel
Surface Treatment	Oiled
Usage	Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Mining, Construction & Decoration
Section Shape	Round
Transport Package	in Container
Specification	30*3-426*70MM
Trademark	XL
Origin	China
HS Code	7304291000
Production Capacity	400000tons Per Year

Product Description

Hydraulic Cylinder Honed TubeStandard: ASTM A519, DIN2391, EN10204-1Grade: 1020, C45, ST52, ST52.3, 27SiMn, 25MnTechnology: Cold Drawn, Cold roll, Honed, Skived, BurnishedApplication: construction machinery, metallurgical machinery, plastic machinery, mining machinery, road construction machinery, hydraulic and pneumatic cylinders

Size

Manufacturing Process	Tube ID	Length	Straightness	Dimensional Accuracy	Tolerance on ID	Inner Bore Roughness
honing	Φ40-800mm	≤13m	0.2-0.3mm	H8~H9	±8%	<=0.8 um

Chemical Composition

grade	C	Si	Mn	P	S	Cr	Ni	Cu	V	Al
1020	0.17-0.23	0.17-0.37	0.35-0.65	<=0.035	<=0.035	<=0.25	<=0.30	<=0.25	-	-
C45	0.42-0.50	0.17-0.37	0.50-0.80	<=0.035	<=0.035	<=0.25	<=0.30	<=0.25	-	-
16Mn	0.13-0.19	0.20-0.60	1.20-1.60	<=0.030	<=0.030	<=0.030	<=0.30	<=0.25	-	-
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	<=0.035	<=0.035	<=0.30	<=0.30	<=0.20	-	-
ST52	<=0.20	<=0.50	<=1.70	<=0.035	<=0.035	<=0.30	<=0.50	<=0.30	<=0.15	-
ST52.3	<=0.18	<=0.50	<=1.70	<=0.030	<=0.25	<=0.30	<=0.50	<=0.30	<=0.15	≥0.015

Mechanical Property

Grade	Cold finished (hard) (BK)		Cold finished (hard) (BK+S)			Hardness	Impact Value (-20°C) J
	T.S bN/mm2	Elongation 85%	T.S bN/mm2	Y.S SN/mm2	Elongation 85%
1020	≥550	≥8	≥520	≥400	≥15	170	--
C45	≥680	≥5	≥630	≥520	≥12	190	--
16Mn	≥640	≥5	≥600	≥520	≥14	160	--
27SiMn	≥780	≥5	≥700	≥580	≥10	220	--
ST52	≥660	≥8	≥620	≥520	≥15	190	--
ST52.3	≥660	≥8	≥620	≥520	≥15	190	≥27

Size Tolerance(mm)

ID size	ID Tolerance					WT Tolerance
	H7	H8	H9	H10	H11
30	+0.0210	+0.0330	+0.0520	+0.0840	+0.1300	±5%
>30-50	+0.0250	+0.0390	+0.0620	+0.1000	+0.1600
>50-80	+0.0300	+0.0460	+0.0740	+0.1200	+0.1900
>80-120	+0.0350	+0.0540	+0.0870	+0.1400	+0.2200
>120-180	+0.0400	+0.0630	+0.1000	+0.1600	+0.2500
>180-250	+0.0460	+0.072	+0.1150	+0.1850	+0.2900
>250-315	+0.0520	+0.0810	+0.1300	+0.2100	+0.3200
>315-800	+0.0570	+0.0890	+0.1400	+0.2300	+0.3600

OD	Tolerance	OD	Tolerance
≤Φ40	±0.15	Φ160~200	±0.80
Φ40~60	±0.25	Φ200~240	±1.00
Φ60~80	±0.30	Φ240~340	±1.50
Φ80~100	±0.40	Φ340~440	±2.00
Φ100~160	±0.50	Φ440~520	±2.50