Portion I: Product INTRODUCTION
one. Description: Honed tube is a kind of clean bore metal tube utilized to manufacture hydraulic cylinder barrels that is the core portion of a piece of hydraulic cylinder. 

2. Commodity: ASTM A519 Cold drawn seamless honed tubing for hydraulic cylinder

3. Measurement selection: 40mm*30mm-580mm*500mm

four. Accessible metal quality: 

SAE/AISI:	SAE1571, SAE1026, SAE1045, SAE4130, SAE4140
DIN:	ST52, ST52.3, ST52.four
EN:	E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470
GB:	twenty#, 45#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn,

5. Manufacture method: Chilly rolled, hydraulic chilly drawn, hot rolled+deep hole dull

6. Delivery issue: 

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

7. Bore remedy: Honing, skiving&roller burnishing

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

9. Finish finish: Basic ends with square cuts, totally 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. End plastic caps. External packing by PVC luggage and knit luggage. 

eleven. CZPTized packing and marking can be offered upon request. 

12. H8 tolerance: 

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

thirteen. Big difference between honed tube and skived&roller burnished tube: In hydraulic cylinder market, there are 2 solutions for bore treatment method: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to distinct interior floor graphic, but both ensure excellent roughness. 

Inside Surface area Situation OF HONED TUBES:

Inner Area Condition OF SKIVED&ROLLER BURNISHED TUBES:

Part II: Regularly Questioned Queries
1. MOQ: CZPTly Min Buy Quantity can be two-3 tons/size for tubes with OD below 250mm, and ten tons/size for tubes with OD above 250mm. Often, it depends on steel quality you want. If you need particular quality like E410, E470 or alloy steel tube, MOQ should be 10 tons/measurement at the very least. 
2. Shipping and delivery Time: CZPTly, our supply time for honed tubes is about forty-sixty times dependent on the measurements and quantities. It will take us fifteen-thirty times to get raw content. For case in point, if you need 3 tons of little dimensions honed tubes 50mm*40mm with roughness of Ra0.25um max, it will take us at the very least thirty days to hone this dimension. 
three. Warranty&Ensure: Warranty&ensure interval is 6 months since we provide the tubes, and we are not dependable for good quality problem brought on by incorrect unloading or storage soon after shipment. We welcome customer’s inspection ahead of shipment. 
four. Payment Approach: We accept payment approach like T/T, L/C, or D/P, but it depends on our investigation about buyers. We have a solution to appraise the credit of clients from all in excess of the globe, and time and quantity of D/P we can release is established by the evaluation. 
five. Good quality Management: ninety% of the tubes are made from very hot rolled seamless pipes. So, quality of uncooked materials decided quality of finished tubes. We purchase uncooked content from steady suppliers who are top metal mills, and we examine the uncooked material as for each the technical specs. During our generation treatment, there is inspection and quality manage in every single phase. 

Element III: Business INTRODUCTION
We are a manufacturer of cold drawn, chilly rolled, and hydraulic cold drawn steel tubes with OD upto 356mm since 2002. Covering an region of about 32000M2, we have 12 standard workshops with 2 hydraulic chilly drawing benches, 4 chain cold drawing benches, and 2 ERW mills. Our facilities addresses all the generation techniques from pickling, cold drawing, warmth managing, saw cutting, straightening, inspection, packing to further machining &turning, chilly drawing die fabrication, and gear repairation&routine maintenance. 

Manufacturing facility Physical appearance:

Raw Materials Inventory:

HYDRAULIC Cold DRAWING:

MULTI-ROLLER STRAIGHTENING:

STRAIGHTENING BY Push:

Observed Reducing:

LATHES:

HONING:

DEEP Gap Unexciting/DRILLING:

SKIVING&ROLLER BURNISHING: