DIN 2391 ST45 ST52 Honed Cylinder Tube H7-H9

Honed tube, also called hydraulic cylinder tube, is used for hydraulic cylinder barrel. ST45 honed tube and ST52 honed tube are widely used as hydraulic cylinder tube due to their good weldability. ST52 is a low alloy steel that is not only hard but also have high tensile properties. Dingxin has around 20 years experience in manufacturing ST45 honed tube and ST52 honed tube and export worldwide continuously.

 

Product name	DIN 2391 ST45 ST52 honed cylinder tube H7-H9
Standard	DIN 2391
Material	ST45 ST52
Dimension	ID 50-250mm, WT3-32mm, Length: less than 12m
Delivery condition	Stress Relieved Annealed (SRA), Cold (Hard) or others based on client’s requirement
Roughness	Ra 0.2~0.4μm
ID tolerance	H7~H9
Straightness	0.5/1000mm
Applications	Hydraulic cylinder for construction machinery, aerial working platform, material handling machinery, agriculture machinery and hydraulic jack
Packaging	Oil pipe, plastic heads on both ends
Marking	Plant logo, Specification, Material, Steel Grade, Delivery condition, Size , Heat Number

 

Steel Grade	C	Si	Mn	P	S
ST45	≤0.21	≤0.35	≥0.40	≤0.025	≤0.025
ST52	≤0.22	≤0.55	≤1.60	≤0.025	≤0.025

 

	BK		BKS
Steel Grade	Tensile strength (Mpa)	Elongation (%)	Tensile strength (Mpa)	Yield strength (Mpa)	Elongation (%)
ST45	≥580	≥5	≥520	≥375	≥12
ST52	≥640	≥4	≥580	≥420	≥10

 

ID size (mm)	ID tolearance (mm)
	H7	H8	H9
30	0.021	0.033	0.052
＞30~50	0.025	0.039	0.062
＞50~80	0.03	0.046	0.074
＞80~120	0.035	0.054	0.087
＞120~180	0.040	0.063	0.1
＞180~250	0.046	0.072	0.115
＞250~315	0.052	0.081	0.14
＞315~400	0.057	0.089	0.17

 

 

1. Q:  Are you a trading company or manufacturer?

      A: Dingxin is a profession steel tube manufacturer locating in Jiaxing City, Zhejiang Province and is specialized in manufacturing ST45 and ST52 honed cylinder tube for 20 years.

 

2. Q: How long is your delivery time?

      A:Dingxin manufacture the pipes according to client’s specified requirement. It takes 30-40 days to produce the pipes after reaching agreement with clients.

 

3. Q: What is your term of payment?

      A: 30% advance payment, 70% balance against B/L copy.

 

 

Why choose us?

• Our Honed Tube products are manufactured to the highest international standards of quality and safety.
• We pursue the goal of 'quality assurance, reasonable price, prompt delivery, and perfect service'. We must live up to the support and love of friends and users from all walks of life!
• Our Honed Tube products are used in a wide range of industries, including automotive, construction, and manufacturing.
• Good intellectual capital management system can bring positive impact on enterprise performance.
• We work closely with our customers to understand their specific needs and provide them with the best Honed Tube products and services.
• Based on honesty, we have reached a stable business relationship of win-win cooperation with many customers.
• Our Honed Tube products are designed to optimize the performance of hydraulic and pneumatic systems.
• If you are interested in our products, please feel free to visit our web site or contact us.
• We offer customization options for our Honed Tube products to meet the specific needs of our customers.
• Our company strives to create a world-class high-end DIN 2391 ST45 ST52 Honed Cylinder Tube H7-H9 manufacturing and service base through continuous technological upgrading and quality improvement.

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