PART I: PRODUCT INTRODUCTION
1. Description: Bearing steel tube is a kind of cold drawn or cold rolled seamless precision or mechanical tubes with carbon steel and alloy steel grades used as bearings. The main grades includes SAE or AISI 52100, GCr15, 40Cr, SAE or AISI 1045,etc.
2. Commodity: seamless steel tube for bearing
3. Steel grade: SAE or AISI 52100, 100Cr6, GCr15,40Cr,SAE or AISI 1045,
4.Size range:
| OD: |
upto 325mm |
| ID: |
upto 300mm |
| W.T: |
not limited |
6. Manufacture method: Cold rolled, Cold drawn, Hydraulic cold drawn
7. Delivery Condition:
| BK |
BKW |
BKS |
GBK |
NBK |
Q+T |
| +C |
+LC |
+SR |
+A |
+N |
| Cold rolled |
Cold drawn |
Stress relieved |
Annealed |
Normalized |
Quenched+Tempered |
8. End finish: plain ends with square cuts,bevelled ends.
9. Standard export packing: in bundles tied with steel strips. Internal and external oil coating. External packing by PVC bags and knit bags.
10. Customized packing or marking are available upon request.
COLD DRAWN SEAMLESS PRECISION STEEL TUBE - GRADE OF 40Cr:
COLD DRAWN SEAMLESS TUBE WITHOUT HEAT TREATING - GRADE OF SAE/AISI 1045:
PART II: FREQUENTLY ASKED QUESTIONS
1. MOQ: 3-5 tons/size for carbon steel grades, 10-20 tons/size for alloy steel gardes.
2. Delivery Time: 20-30 days for carbon steel mechanical tubings, 30-50 days for alloy steel mechanical tubings.
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: 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:
COLD DRAWING DIE WAREHOUSE:
HYDRAULIC COLD DRAWING:
HEAT TREATING FURNACE:
MULTI-ROLLER STRAIGHTENING:
STRAIGHTENING BY PRESS:
SAW CUTTING:
Audited Supplier 
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