JIS G3445 Stkm 13A Stkm 13b Stkm 13c Cold Drawn Seamless Precision Honed Carbon Steel Tube for Hydraulic Cylinder Barrel

JIS G3445 Stkm 13A Stkm 13b Stkm 13c Cold Drawn Seamless Precision Honed Carbon Steel Tube for Hydraulic Cylinder Barrel

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

two. Commodity: STKM 13C seamless honed metal tube for hydraulic cylinder

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

four. Obtainable steel grade: 

SAE/AISI:  SAE1571, SAE1026, SAE1045, SAE4130, SAE4140
DIN:  ST52, ST52.three, ST52.four
EN:  E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470
GB:  20#, forty five#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn, 

five. Manufacture technique: Chilly rolled, hydraulic chilly drawn, very hot rolled+deep hole boring

six. Shipping situation: 

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

seven. Bore treatment: Honing, skiving&roller burnishing

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

nine. End end: Simple 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 metal strips. Int&ext oil coating. Finish plastic caps. Exterior packing by PVC bags and knit luggage. 

eleven. CZPTized packing and marking can be presented upon ask for. 

twelve. H8 tolerance: 

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

13. Distinction in between honed tube and skived&roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore therapy: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing prospects to diverse interior surface area image, but both ensure great roughness. 

Interior Floor Issue OF HONED TUBES:

Internal Surface area Problem OF SKIVED&ROLLER BURNISHED TUBES:

Part II: Often Asked Queries
one. MOQ: 
CZPTly Min Order Amount can be two-three tons/dimensions for tubes with OD below 250mm, and ten tons/dimensions for tubes with OD over 250mm. At times, it relies upon on steel grade you need. If you need specific grade like E410, E470 or alloy steel tube, MOQ must be ten tons/dimensions at least. 
2. Shipping Time: CZPTly, our delivery time for honed tubes is around 40-sixty days dependent on the dimensions and portions. It will take us 15-30 times to get raw content. For example, if you need to have 3 tons of small size honed tubes 50mm*40mm with roughness of Ra0.25um max, it will get us at least 30 times to hone this dimension. 
three. Warranty&Ensure: Warranty&promise period of time is 6 months given that we provide the tubes, and we are not responsible for high quality issue triggered by improper unloading or storage soon after shipment. We welcome customer’s inspection prior to shipment. 
4. Payment Method: We take payment method like T/T, L/C, or D/P, but it is dependent on our investigation about clients. We have a solution to appraise the credit score of buyers from all over the globe, and time and amount of D/P we can launch is established by the analysis. 
5. Quality Manage: ninety% of the tubes are produced from hot rolled seamless pipes. So, good quality of raw substance identified quality of finished tubes. We buy uncooked content from secure suppliers who are foremost steel mills, and we examine the uncooked substance as for each the requirements. In the course of our manufacturing treatment, there is inspection and good quality manage in every stage. 

Component III: Business INTRODUCTION
We are a manufacturer of chilly drawn, chilly rolled, and hydraulic cold drawn steel tubes with OD upto 356mm since 2002. Covering an area of about 32000M2, we have twelve common workshops with 2 hydraulic chilly drawing benches, 4 chain cold drawing benches, and 2 ERW mills. Our amenities addresses all the production processes from pickling, chilly drawing, heat dealing with, saw slicing, straightening, inspection, packing to additional machining &turning, cold drawing die fabrication, and products repairation&maintenance. 

Manufacturing unit Visual appeal:

Uncooked Material Inventory:


Heat Managing FURNACE:


Noticed Chopping:






JIS G3445 Stkm 13A Stkm 13b Stkm 13c Cold Drawn Seamless Precision Honed Carbon Steel Tube for Hydraulic Cylinder Barrel