PART I: PRODUCT INTRODUCTION
1. Description: Seamless rectanglar steel tubes, with the other name rectangular hollow section, is made from hot rolled seamless steel pipes. It's not welded hollow section. It is made through hydraulic cold drawing and is seamless tube with tight size tolerance, perfect twist,etc.
2. Commodity: Cold drawn seamless rectangular steel tube
3. Available steel gardes:
| ASTM A519: |
SAE1020,SAE1026,SAE1045,SAE1518,SAE1524,SAE1541, SAE4130,SAE4140,SAE4145,SAE4340,SAE8620 |
| DIN 2391-2: |
ST35,ST45,ST52 |
| EN 10305-1: |
E195,E235,E355,C35E,C45E,25CrMo4,34CrMo4,42CrMo4, |
| EN 10305-4: |
E215,E235,E355 |
| GB/T 3639: |
10#,20#,45#,16Mn,Q345B,Q345C,Q345D,Q345E,25Mn,27SiMn, |
5. Size range:
| Side |
80mm*60mm-300mm*200mm |
| W.T: |
35mm max |
6. Manufacture method: Hydraulic cold drawn
7. Delivery Condition:
| BKW |
BKS |
GBK |
NBK |
| +LC |
+SR |
+A |
+N |
| Cold drawn |
Stress relieved |
Annealed |
Normalized |
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 RECTANGULAR TUBE - NOT HEAT TREATED:
COLD DRAWN SEAMLESS RECTANGULAR TUBE - STRESS RELIEVED:
COLD DRAWN RECTANGULAR TUBE - HEAT TREATED:
PART II: FREQUENTLY ASKED QUESTIONS
1. MOQ: 5 tons/size depending on the size.
2. Delivery Time: 30-45 days average.
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:
HYDRAULIC COLD DRAWING:
STRAIGHTENING:
SAW CUTTING:
HEAT TREATING FURNACE:
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