China High Precision Burnished Steel Hydraulic Cylinder Honed Pipe Honed Tube for Hydraulic Parts

Product Description

Standard	DIN2391, EN10305, ASTM A519, GB/T 3639-200
Material	Q355B 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	0.5-1/1000
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 and

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	/	/	/

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

Working method	range	ID	H8	H9	H10
cold drawn	25-250	30-50	+0.0390	+0.0620	+0.1000
cold rolling	25-150	50-80	+0.0460	+0.0740	+0.1200
cold drawn-honed	40-250	80-120	+0.0540	+0.0870	+0.1400
cold drawn-SRB	50-250	120-180	+0.0630	+0.1000	+0.1600
cold drawn -polished	40-250	180-250	+0.0720	+0.1150	+0.1850
cold drawn-polish-SRB	50-250	as required	as required	as required	as required

Process Flow
High Precision Burnished Steel Hydraulic Cylinder Honed Pipe Honed Tube for Hydraulic Parts

Packaging

Company Profile
High Precision Burnished Steel Hydraulic Cylinder Honed Pipe Honed Tube for Hydraulic Parts

Q1: Are you trading company or Manufactuer ?
A: Of course, we are manufactuer. We are in field of honed tube and piston rod for more than 15 years.
Q2: What is the payment term? Do you accept LC ?
A: Normally payment is by T/T, 30% advance payment, balance pay after receiving the copy BL. L/C is accepted. Also we provide Trade Assurance online which will protect the interests of both sides.The payment will be hold by authorized Third Party until you receive the goods under the Trade Assurance Policy.
Q3: What is your delivery time?
A: normally, it is 25~60 days after you confirm the order. If your order is urgent, we would like to try our best to meet your requirements.
Q4: What is the package?
A: The package is seaworthy wooden case by container, or accoding to your requirements.
Q5: Can I add my logo on the goods?
A: Yes, OEM and ODM are available for us. Q6: Do you have inspection procedures before sending goods? A: 100% inspection before packing and Third Party Inspection Service is available if customer apply for it.
Q7: Can I visit your factory before the order?
A: Please, we are finding long-term partners, welcome to visit our factory. We will pick you up at the airport.