|
[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 | GB/T3087 |
Material | 10#, 20# |
Size | OD: 6-127mm WT: 0.5-12 Length: 4-12.5m |
Techinique | Hot Rolled and Cold Drawn |
Delivery Condition | Hot Rolled or Normalizing |
Test | Flare Test, Bend Test, Hydraulic Test, Macroscopic Test,
Nondestructive Test etc |
Application | Low and Medium Pressure Boiler |
Tensile Requirements
Grade | Tensile Strength, MPa | Yeild Strength, MPa min | Elongation, % min |
Wall Thickness, mm ≤16 >16 | |||
10 | 335-475 | 205 195 | 24 |
20 | 410-550 | 245 235 | 20 |
Outside Diameter Requirements
Type | Permissible Variation |
Hot Rolled (Hot Extrusion/Expand) | ±1.0%D or ±0.50, choose lager one |
Cold Drawn (Rolled) | ±1.0%D or ±0.50, choose lager one |
Wall Thickness Requirements
Type | OD | S/D | Permissible Variation |
Hot Rolled (Hot Extrusion) Tube | ≤102 | - | ±12.5%S or ±0.40, choose lager one |
>102 | ≤0.05 | ±15%S or ±0.40, choose lager one | |
>0.05-0.10 | ±12.5%S or ±0.40, choose lager one | ||
>0.10 | ±12.5%S, -10%S | ||
Hot Expanded Tube | ±15%S | ||
Type | Wall Thickness | Permissible Variation |
Cold Drawn (Rolled) | ≤3 | +15% -10%S or ±0.15, choose lager one |
>3 | ±12.5%S, -10%S |
Straightness
Norminal Wall Thickness/mm | Bending per Meter |
≤15 | ≤1.5 |
>15-30 | ≤2.0 |
>30 or OD≥351 | ≤3.0 |
Product Show
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
TORICH GB/T3087 Seamless Steel Tube for Low and Medium Pressure Boiler
