6mm OD Seamless 4130 Alloy Steel Pipe Hot Rolled With ISO9001 Certificate
| Standard | ASTM A519 SeamlessCarbonandAlloySteelMechanicalTubing |
| Key Word | Alloy Steel Tubing |
| Material | 4130,4340,42CrMo |
| Size | OD: 6-450mm; WT: 1-50mm; Length: max12000mm |
| Production method | Hot Rolled, Cold drawn, Cold Rolled |
Chemical Requirement
| Steel Grade | C | Mn | P, max | S, max | Si | Cr | Mo |
| SAE 4130 | 0.28-0.33% | 0.40-0.60% | 0.40% | 0.40% | 0.15-0.35% | 0.80-1.10% | 0.15-0.25% |
| SAE4140 | 0.38-0.43% | 0.75-1.00% | 0.40% | 0.40% | 0.15-0.35% | 0.80-1.10% | 0.15-0.25% |
QUALITY CONTROL:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us
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