PART I: PRODUCT INTRODUCTION
1. Description: Ready to hone tube is a kind of seamless tube with ID suitable for honing. It can be cold drawn or hot rolled.
2. Commodity: E410 cold drawn seamless steel tube for hydraulic cylinder
3. Size range: 40mm*30mm-325mm*300mm
4. 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, |
5. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring
6. Delivery condition:
| BK |
BKW |
BKS |
GBK |
NBK |
Q+T |
| +C |
+LC |
+SR |
+A |
+N |
| Cold rolled |
Cold drawn |
Stress relieved |
Annealed |
Normalized |
Quenched+Tempered |
7. ID Tolerance: given by customer. We suggest -0.3mm/-0.5mm for honing, -0.6mm/-0.9mm for skiving&roller burnishing depending on the length of tube.
8. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes.
9. Standard export packing: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags.
10. Customized packing and marking can be provided upon request.
COLD DRAWN SEAMLESS TUBES - STRESS RELIEVED WITHOUT OIL COATING:
COLD DRAWN SEAMLESS TUBE-ANNEALED AND OIL COATIED&PACKED:
COLD DRAWN SEAMLESS TUBE-ANNEALED AND EXTERNALLY POLISHED:
PART II: FREQUENTLY ASKED QUESTIONS
1. MOQ: Generally Min Order Quantity can be 2-3 tons/size for tubes with OD below 250mm, and 10 tons/size for tubes with OD above 250mm. Sometimes, it depends on steel grade you need. If you need special grade like E410, E470 or alloy steel tube, MOQ should be 10 tons/size at least.
2. Delivery Time: 20-30 days depending on ordered sizes and quantities.
3. Warranty&Guarantee: Warranty&guarantee period is 6 months since we deliver the tubes, and we are not responsible for quality problem caused by wrong unloading or storage after shipment. We welcome customer's inspection before shipment.
4. Payment Method: We accept payment method like T/T, L/C, or D/P, but it depends on our investigation about customers. We have a solution to evaluate the credit of customers from all over the world, and time and amount of D/P we can release is determined by the evaluation.
5. Quality Control: 90% of the tubes are made from hot rolled seamless pipes. So, quality of raw material determined quality of finished tubes. We purchase raw material from stable suppliers who are leading steel mills, and we inspect the raw material as per the specifications. During our production procedure, there is inspection and quality control in every stage.
PART III: COMPANY INTRODUCTION
We are a manufacturer of cold drawn, cold rolled, and hydraulic cold drawn steel tubes with OD upto 356mm since 2002. Covering an area of about 32000M2, we have 12 standard workshops with 2 hydraulic cold drawing benches, 4 chain cold drawing benches, and 2 ERW mills. Our facilities covers all the production procedures from pickling, cold drawing, heat treating, saw cutting, straightening, inspection, packing to further machining &turning, cold drawing die fabrication, and equipment repairation&maintenance.
FACTORY APPEARANCE:
RAW MATERIAL STOCK:
HYDRAULIC COLD DRAWING BENCH:
SAW CUTTING:
STRAIGHTENING:
LATHES:
HONING:
SKIVING&ROLLER BURNISHING:
DEEP HOLE BORING/DRILLING:
Audited Supplier 
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