Specifications

1.Grade:10#,20#.35#,45#,Q345,16Mn,25Mn,27SiMn,42CrMo,Aisi1020,Aisi1045,St45,St52etc
2.ID:30-250mm
3.Supply condition:BK+S Bk

 

Commodity name: Big Diameter  En10305 E355 pneumatic cylinder tube

 

Introduction: 

 

hydraulic cylinder tube st52 din2391 is a kind of after cold rolling processing of a kind of high precison steel tube, full name cold rolled precision seamless steel tube. Precision seamless steel tube wall inside and outside the precision seamless steel pipe seamless steel pipe without oxidation layars, under high pressure without lea, high precision, high finish, cold bending deformation, flaring, flattening without cracks,etc, it is mainly used to produce pneumatic or hydraulic components products, such as a cylinder or cylinder, are made seamless tube. the chemical composition of precision seamless steel tube with carbon sulfur C,Si, Mn, S, P, Cr.

 

 

Parameter:

 

1.Grade:10#,20#.35#,45#,Q345,16Mn,25Mn,27SiMn,42CrMo,Aisi1020,Aisi1045,St45,St52etc

 

2.ID:30-250mm

 

3.ID tolerance:H8,H9 Surface roughness:Ra 0.02— 0.4μm

 

4. Final supply condition:cold drawn and stress-relieved(BK+S)

 

5. Machining allowance:0.5-1.5mm

 

6.Wall thickness:10%×ID

 

 

Suitable for hydraulic cylinder tubes,honing or skiving and roller burnishing cylinder tubes and other applications

Dimensions tolerance

 

 

 

OD(mm)	ID (mm)	Tolerance
		OD (mm)	ID (mm)	Wall thickness deviation (mm)	Ovality (mm)	Curvature(mm/m)
40-74	30-65	±.01	-0.3,-0.5	≤0.5	≤0.1	0.3
74-98	65-85	±.01	-0.4,-0.6	≤0.5	≤0.15	0.3
100-116	85-100	±.02	-0.4,-0.6	≤0.6	≤0.15	0.3
124-134	110-115	±.02	-0.6,-0.8	≤0.6	≤0.20	0.3
140-158	120-135	±.02	-0.7,-0.9	≤0.8	≤0.20	0.3
165-176	140-150	±.02	-0.7,-0.9	≤0.8	≤0.20	0.3
188-203	160-180	±.02	-0.7,-0.9 Honed	≤0.8	≤0.20	0.3

 

Tolerance on ID

 

No.	Inside diameter(mm)	ID machining allowance(mm)
1	50-80	0.5-0.8
2	81-125	0.7-1.1
3	125-200	0.9-1.2
4	200-250	1-1.5
Other dimension can be customized

 

Commercial length

 

No.	ID Min.(mm)	Length(mm)
1	50	700—2000
2	63	700—3000
3	80	700—4000
4	>90	700—6000
Other dimension can be customized

 

Delivey conditions:

 

• Standard packing with plastic caps and strapped bundles.
• Commercial length 2000~10500mm,custom lengths upon request
• Surface protection

 

About our service:

 

 

 

1.cargo track service during transporting and feedback service after cargo is loaded on board

 

 

 

2.flexible terms of payment by T/T and L/C

 

 

 

3.big discount for repeat customers

 

 

 

4.smooth delivering procedure

 

 

 

 

 

we can supply all kinds of steel pipes such as hot rolled seamless steel pipes ,cold drawn seamless steel pipes,honed pipes,cold drawn welded tubes(DOM tubes).

 

 

 

Welcome to inquiry at any time, we will try our best to serve you.

 

 

 

Management System Certification:

 

 

 

Production Process:

• Pretreatment : Pickling­—Phosphating—Saponification

 

• Cold drawn/cold rolled

• Annealing furnace——+SR

• Straightener—— Straightening

•  Straightness inspecting

• Dimension inspecting

  

• Sawing

 

• Lathe

• Polishing

SRB or Honed

• Finished Products

 

 

Application:

 

hydraulic cylinder tube st52 din2391 widely used in hydraulic system with precision steel tube, injection molding machine with precision steel tube, hydraulic press with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machinery, hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure tubing, hydraulic tubing, card sets of joints, pipe joints, rubber machinery, forging machinery, casting machinery, engineering machinery, automotive high pressure steel pipe concrete pump, sanitation vehicle, automobile industry, shipbuilding industry, metal processing, military industry, diesel engine, the internal combustion engine, air compressor, construction machinery, forestrymachinery, etc.

 

 

Why you choose us as your best choice?

• Our quality is the top five in China. Raw material is mainly from some famous refinery steel mills, such as BAO STEEL, Tianjin, and Chengdu etc, which are the best and largest raw material manufacturers in China.
• we have been through ISO9001:2008 international quality system certification.
• Warranty period for our honed tubes and chrome bars is 2 years. For some special or important customers, the period is 5 years.
• All the orders, records of production and inspection would be kept for 5 years
• High Precision:

Honed tube (Roughness of tube is 0.2μm and straightness is less than 0.15/1000), piston rod (Plating thickness is 10-100 micron. Surface roughness is 0.2μm and straightness is also less than 0.15/1000)

Product details are completely according to International Standard, chrome rod and honed tube must be cut flatly, and no chrome marks on the surface of rod. (Most of domestic mills don’t do this in order to reduce cost)

 

• Delivery time is very fast. The average delivery time is 5-30 days after confirming the orders.
• Package:banding with steel strips, braiding parcel at outside
• Conservation: Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends.