Honed Tube Pipe Factory for Hydraulic Cylinders | Quality Honing at Competitive Prices

Steel Grade	Rm Mpa	ReH Mpa	Elonggation	cold finished Rm Mpa	cold finished Elonggation
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
16Mn(Q345B /D)	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5
St45	≥520	≥375	≥15	≥550	≥5
E355(st52)	≥600	≥520	≥14	≥640	≥5
SAE1026	≥600	≥510	≥15	≥640	≥5

Steel Grade	C	SI	Mn	P	S	Cr	Ni	Cu
20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	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	0.15
25Mn	0.22-0.29	0.17-0.37	0.70-1.00	0.035	0.035	/	/	/
27SiMn	0.22-0.32	1.10-1.40	1.10-1.40	0.035	0.035	0.300	0.300	/
E355	≤0.2	≤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	/	/	/

Application:Hydraulic Pipe Alloy Or Not:Non-Alloy Section Shape:Round Special Pipe:Thick Wall Pipe Outer Diameter:30 - 500 mm, 40-500mm Thickness:3 - 50 mm Standard:bs,DIN,API,ASTM,SAE,AISI,GB,JIS Length:1-12m, 1-12m Certificate:ce, ISO9001 Grade:ST52,E355 SAE1026.CK45 4130 4140 STKM 13C, 10# ,20# ,45# ,16Mn ,Q235, Q345,St34-52, St37,St45,St52 or OEM SERVICE Surface Treatment:Chrome Plated Tolerance:±5%, H8,H9,H10 Processing Service:Bending, Welding, Decoiling, Punching, Cutting Oiled or Non-oiled:Slightly Oiled Invoicing:by actual weight Delivery Time:8-14 days Condition:New Type:Fittings thickness:3-100mm Heat treatment:BK+S or as requested Certification:ISO/CE

Standard	DIN2391, EN10305, ASTM A519, GB/T 3639-200
Material	Q345B Q355D C20,ST52,E355 SAE1026.CK45 4130 4140 STKM 13C
Heat treatment	BK+S
Specification	Outer diameter(mm)	Inner diameter(mm)
	40-480mm	30-400mm
I.D Tolerance	H8-H9
Length	Fixed Length, Random Length(3--9m)or as requests of customers
Straightness	0.3/1000
ID roughness	RA 0.1-0.8micron(max)
Technology	Honed & SRB(SKIVED AND ROLLER BURNISHED )
Scope	Honed tube for hydraulic cylinder, swivel crane, injection machine

Technique: cold drawn, cold drawn-honed, cold drawn-SRB, cold drawn -polished, cold drawn-polish-SRB

Tolerance
ID	H8	H9	H10
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
as required	as required	as required	as required