Honed Tube for Hydraulic Cylinder St52 St44 Tolerance H8 H9

• Customization: Available
• 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

Product Description

Hydraulic Cylinder Honed Tube
Standard: ASTM A519, DIN2391, EN10204-1
Grade: 1020, C45, ST52, ST52.3, 27SiMn, 25Mn
Technology: Cold Drawn, Cold roll, Honed, Skived, Burnished
Application: 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/mm^2	Elongation 85%	T.S bN/mm^2	Y.S SN/mm^2	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