St52 St52.3 St52.4 Hot Rolled and Deep Hole Bored or Cold Drawn Seamless Hydraulic Honed Steel Tube for Hydraulic Cylinder Barrel

St52 St52.3 St52.4 Hot Rolled and Deep Hole Bored or Cold Drawn Seamless Hydraulic Honed Steel Tube for Hydraulic Cylinder Barrel

Element I: Solution INTRODUCTION
one. Description: 
Honed tube is a kind of sleek bore steel tube utilized to manufacture hydraulic cylinder barrels that is the core element of a piece of hydraulic cylinder. 

2. Commodity: ST52 honed steel tube for hydraulic cylinder

3. Dimensions assortment: 40mm*30mm-580mm*500mm

four. Available metal grade: 

SAE/AISI:  SAE1571, SAE1026, SAE1045, SAE4130, SAE4140
DIN:  ST52, ST52.three, ST52.4
EN:  E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470
GB:  twenty#, forty five#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn, 

five. Manufacture approach: Chilly rolled, hydraulic chilly drawn, scorching rolled+deep gap boring

six. Shipping and delivery problem: 

+C +LC +SR +A +N
Chilly rolled Cold drawn Pressure relieved Annealed Normalized Quenched+Tempered

seven. Bore treatment method: Honing, skiving&roller burnishing

eight. Bore roughness manage: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes. 

9. Finish end: Plain ends with square cuts, free of burrs for honed tubes. Minor bevelled finishes for skived&roller burnished tubes. 

ten. CZPT export packing: In bundles tied with steel strips. Int&ext oil coating. Finish plastic caps. Exterior packing by PVC bags and knit baggage. 

11. CZPTized packing and marking can be provided upon ask for. 

12. H8 tolerance: 

ID variety Tolerance ID variety Tolerance
eighteen< d ≤30 +/+.033 a hundred and eighty< d ≤250 +/+.072
30< d ≤50 +/+.039 250< d ≤300 +/+.081
fifty< d ≤80 +/+.046 300< d ≤315 +/+.081
eighty< d ≤120 +/+.054 315< d ≤400 +/+.089
a hundred and twenty< d ≤180 +/+.063 400< d ≤500 +/+.097

thirteen. Difference between honed tube and skived&roller burnished tube: In hydraulic cylinder sector, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to various inside floor impression, but the two make certain great roughness. 

Inside Surface Situation OF HONED TUBES:


Component II: Regularly Questioned Questions
1. MOQ: 
CZPTly Min Get Amount can be 2-three tons/dimension for tubes with OD under 250mm, and 10 tons/measurement for tubes with OD over 250mm. Occasionally, it depends on steel grade you need to have. If you need to have specific quality like E410, E470 or alloy steel tube, MOQ should be ten tons/size at least. 
two. Shipping Time: CZPTly, our supply time for honed tubes is all around 40-60 days based on the measurements and portions. It will get us fifteen-30 days to get uncooked material. For example, if you need 3 tons of small size honed tubes 50mm*40mm with roughness of Ra0.25um max, it will get us at minimum thirty times to hone this measurement. 
3. Warranty&Ensure: Warranty&ensure period of time is 6 months given that we supply the tubes, and we are not liable for quality difficulty induced by incorrect unloading or storage soon after cargo. We welcome customer’s inspection before shipment. 
4. Payment Method: We take payment approach like T/T, L/C, or D/P, but it is dependent on our investigation about buyers. We have a solution to assess the credit rating of consumers from all more than the globe, and time and volume of D/P we can launch is decided by the analysis. 
five. Quality Management: ninety% of the tubes are produced from hot rolled seamless pipes. So, good quality of uncooked material identified good quality of finished tubes. We acquire raw materials from stable suppliers who are major steel mills, and we examine the raw content as for each the specs. During our creation procedure, there is inspection and top quality manage in each stage. 

We are a manufacturer of cold drawn, cold rolled, and hydraulic chilly drawn metal tubes with OD upto 356mm considering that 2002. Covering an area of about 32000M2, we have 12 regular workshops with 2 hydraulic chilly drawing benches, 4 chain chilly drawing benches, and 2 ERW mills. Our services covers all the manufacturing processes from pickling, chilly drawing, warmth treating, saw reducing, straightening, inspection, packing to more machining &turning, chilly drawing die fabrication, and gear repairation&routine maintenance. 

Manufacturing facility Physical appearance:

Raw Materials Stock:




Saw Cutting:






St52 St52.3 St52.4 Hot Rolled and Deep Hole Bored or Cold Drawn Seamless Hydraulic Honed Steel Tube for Hydraulic Cylinder Barrel


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