St52.4 Honed Hydraulic Cylinder Precision Pipe

Product Description

1. Description: Honing is a kind of machining technology. Through honing head, the inner hole of cold drawn pipe is processed by reciprocating high-speed grinding technology, so that the inner hole can meet the requirements of tolerance size and surface roughness that we need.
Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder. 
2. Commodity: 42CrMo4 Precision Cold Drawn Honed Pipe
3. Size range: Inside diameter: 25mm -500mm; Wall thickness: 2-50mm
4. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring
5. Bore treatment: Honing, skiving&roller burnishing
6. Bore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes. 
7. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes. 
8. Standard export packing: In bundles tied with steel strips. Internal & external oil coating. Plastic caps on both ends. External packing by PVC bags and knit bags. 
9. Customized packing and marking can be provided upon request. 
10. Difference between honed tube and skived & roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness. 

Available steel grade

SAE/AISI:	SAE1020, SAE1026, SAE1045, SAE4130, SAE4140
DIN:	ST52, ST52.3, ST52.4
EN:	E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470
GB:	20#, 45#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn,

Delivery condition 

BK	BKW	BKS	GBK	NBK	Q+T
+C	+LC	+SR	+A	+N
Cold rolled	Cold drawn	Stress relieved	Annealed	Normalized	Quenched+Tempered

H8 tolerance 

ID range	Tolerance	ID range	Tolerance
18< d ≤30	+0/+0.033	180< d ≤250	+0/+0.072
30< d ≤50	+0/+0.039	250< d ≤300	+0/+0.081
50< d ≤80	+0/+0.046	300< d ≤315	+0/+0.081
80< d ≤120	+0/+0.054	315< d ≤400	+0/+0.089
120< d ≤180	+0/+0.063	400< d ≤500	+0/+0.097

Package	1) Bundle with strip 2) Water-proof sheeting 3) Woven bags 4) PVC package 5) Clients' Requirements
Shipping	1) 20ft container: 26tons (Can load 5.8M Max) 2) 40ft container: 26tons (Can load 12M Max) 3) More than 100tons:can pack by bulk vessel 4) As your requirement
Port of Shipment	Shanghai/Tianjin Port, China
Date of Delivery	According to the quantity and specification of each order

1) Are you manufacturer or trading company? 
We are integrate of manufacturer and trading.
2) Where is your factory?
We are a group, in order to meet different demands from our customers, we had developed many subsidiary corporations in Shandong, Tianjin, Hebei,Jiangsu and Shanghai.
3) What's the delivery time?
If we have inventory, it is 3-7 days

Generally speaking, it's around 15 days from the date of receiving payment for regular products.
If there any more question, please feel free to contact the sales without any hesitate.


Jiangsu HYT International Trading Co., Ltd was established in 2010, which is a wholly-owned subsidiary of Wuxi Lusheng Special Steel Co., Ltd.. Jiangsu HYT International Trading Co. Is responsible for the overseas marketing business of various metal products produced by our group. We specialize in alloy steel, stainless steel, carbon steel, copper, aluminum, high nickel chromium alloy and other materials of pipes, plates, bars, profiles, piping fittings and welding materials, we dediceted in providing one-stop service for petroleum, chemical, electric power and automobile manufacturing industries.
Our group is a modern industrial enterprise integrating production, development, sales and service... We have a complete and effective quality management and quality assurance system, we had passed the ISO 9001: 2008 Quality Management System Certification, the National Special Equipment Manufacturing License (Pressure Pipeline Level A2), ISO 14001: 2004 Environmental Management System Certification, OHSAS18001: 2001 Occupational Health and Safety Management System Certification and Classification Society Certification.