Precision Srb Cold Rolled Seamless Tube for Hydraulic Cylinder

Basic Info.

Model NO.	20MnV6
Type	Cold Rolling Mill
Elongation	≥16%
Straightness	0.3-1.0/1000
Thickness	3-30mm
Clients	China, Eastern Europe, Southeast Asia
Delievery Time	9-45days
Length	1-10m
Inner Diameter Deviation	H7-H10
Special Pipe	Hydraulic Tube
Internal Diameter	40-200mm
External Diameter	50-203
Certification	ISO 9001
Application	Hydraulic Cylinder
Technique	Cold Rolled, Srb
Transport Package	Containe, Bulk, Door to Door, Rail
Specification	Precision seamless pipe
Trademark	one week
Origin	Shanghai, China
HS Code	7304
Production Capacity	5000 Tons/Year

Product Description

Wuxi Youli Precision Special Steel Co., Ltd.Was established in 2010, specialized in theproduction of excavators and other specialprecision cylinder tube construction machinery, vehicles, vessels, maritime machinery, hydraulic machinery and other industries port machinery, petroleum machinery, mining supporting the use of precision steel pipe Manufacturers.

Standard:	seamless steel tubes as per standard ASTM/ASME/DIN/JIS/GOST	Elongation:	≥16%
Shape:	round&customized	Test temperature:	/
OD:	95mm	I.D Tolerance:	H7
ID:	80mm	Length:	4.5m
WT:	7.5mm	ID roughness:	Ra≤0.1mm
Type:	cold-rolled; inside hole honing(SRB)	Technology:	SRB&Honed
Yield strength:	≥600	Scope:Honed tube for hydraulic cylinder, swivel crane, injection machine for construction machine application
Tensile Strength:	≥ 680

Process-cycle:Billet-------Inspection/Shearing-------Pickling--------Surface trastment--------Cold Rolling-------Heat treatment-------Cutting-------Straightening-------Inspection-------Length measuring, Weithting, Coating, Marking Bundling



Chemical composition(%) of precision pipe's commin grade
Conventional mechanical properties of precision pipe

Standard	Grade	Delivery Conditions
		BK(hard)		BKW(soft)
		Tensil Stength(Mpa)	Make percentage elongation(%)	Tensile stength(Mpa)	Make percentage elongation(%)
GB/T 3639 GB 3077	20#	≥550	≥10	≥490	≥15
	25Mn	≥600	≥12	≥540	≥15
	Q345B	≥620	≥12	≥550	≥15
	45#	≥645	≥8	≥625	≥15
	40Cr	≥784	≥14	\	\
	37Mn5	≥784	≥14	\	\

Dimensional tolerances of inner diameter

Standard	Inner Diameter(mm)	Inner Diameter Deviation(mm)
GB1801-79		H7	H8	H9	H10
	30	0~+21	0~+33	0~+52	0~+84
	30-50	0~+25	0~+39	0~+62	0~+100
	50-80	0~+30	0~+46	0~+74	0~+120
	80-120	0~+35	0~+54	0~+87	0~+140
	120-180	0~+40	0~+63	0~+100	0~+160
	180-250	0~+46	0~+72	0~+115	0~+185
	250-315	0~+52	0~+81	0~+170	0~+210
	315-400	0~+57	0~+89	0~+140	0~+230

The last but not the least, our mission is achieving our customers'demand, making sure that the delivery of the product and service without any disadvantage must be on time. For the community to provide excellent service for employees to create success. We continue to innovate to help customers solve problems, while also improving their competitiveness.We believe that cornerstone of defect prevention system control and process control.
F A Q
1. Q: Are you a trading company or Manufacturer? A: Of course! We are the real manufacturer which in the field of a cold rolling seamless tube for more than 20 years.2. Q: What is your main market? A: Local country, Southeast Asia, Korea, Netherlands and so on.3. Q: What is your delivery time? A: As normally, it is 15~45 days after you confirm the order. If your order is urgent, we would like to try our best to meet your requests.4. Q: What is your main payment item? A: T/T and L/C5. Q: what is the scale of your enterprise? A: There is some elder saying goes: "The sparrow may be small but it has all the vital organs". 6. Q: Why we choose you as our supplier? A: Give us one order, you can feel the different price, quality, and service. Then, you will know us.

You Li Great honor to cooperate with you.And provide you with satisfactory products!!!