PART I: PRODUCTION INTRODUCTION
1. Commodity Description: Cold drawn ERW steel tube, also named DOM tubing, is a kind of drawn over mandrel welded steel tube. This kind of tube has perfect surface condition,concentricity,and high tensile strength.
2. Commodity: Drawn oever mandrel DOM carbon steel round mechanical tubing
3. Size range: 70mm*2mm-325mm*15mm
4. Standard specification&steel grade:
| ASTM/ASME: |
ASTM A512 MT1010,MT1020 |
| EN: |
EN10305-2 E195, E235,E355 |
5. Manufacture method: hydraulic cold drawn
6. Delivery condition:
| BK |
BKW |
BKS |
GBK |
NBK |
| +C |
+LC |
+SR |
+A |
+N |
| Cold rolled |
Cold drawn |
Stress relieved |
Annealed |
Normalized |
7. End finish: plain ends with square cuts,free of burrs.
8. Marking: as per request
9. Standard export packing: in bundles tied with steel strips. Int&ext oil coating. External packing by PVC bags and knit bags.
10. Customized packing and marking are available upon request.
COLD DRAWN ERW STEEL TUBES: OIL PAINTING FOR ANTI-RUST PROTECTION
COLD DRAWN ERW STEEL TUBES: PACKING
PART II: FREQUENTLY ASKED QUESTIONS
1. MOQ: Generally, Min Order Quantity can be 1 ton/size.
2. Delivery Time: Generally, our delivery time is around 20-35 days depending on availability of raw material.
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:
COLD DRAWING DIE WAREHOUSE:
HYDRAULIC COLD DRAWING:
MULTI-ROLLER SRAIGHTENING:
STRAIGHTENING BY PRESS:
SAW CUTTING:
LATHES:
HONING:
Audited Supplier 
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