|
[China]
Trade Verify
Address: Suite 1004, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
Contact name:Richard SHEN
TORICH INTERNATIONAL LIMITED |
|
Verified Suppliers
|
|
|
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
