GB20# Carbon Fuel Injector Engine Pipe Material Seamless Steel Tube
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Tolerance Sheet of Steel Pipe:
| Name | Scope (mm) | GB Series (mm) | DIN Series (mm) | Enterprise Internalcontrol Standard(mm) | Special High-precision (mm) |
Outer Diameter | 3-30 | ± 0.1 | ± 0.08 | ± 0.05 | ± 0.03 |
| 31-40 | ± 0.15 | ± 0.15 | ± 0.05 | ± 0.03 | |
| 41-50 | ± 0.2 | ± 0.20 | ± 0.08 | ± 0.03 | |
| 51-60 | ± 0.25 | ± 0.25 | ± 0.08 | ± 0.03 | |
| Wall Thickness | 0.5-8 | ± 10% Min±0.12 | ± 10% | ± 10% Min ± 0.05 | ± 10% Min ± 0.03 |
DIN St45
| Chemical Composition(%) | Mechanical Property | |||||||||
| C | Si | Mn | S | P | Cr | Ni | Cu | Mo | Yield Strength | Tensile Strength |
| ( σs ) | ( σb ) | |||||||||
| ≤0.21 | 0.17~0.37 | 0.35~0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 | / | ≥245 (MPa) | ≥410 |
| (MPa) | ||||||||||
| End Shape | Beveled end, plain end, vanished, or adding plastic caps to protect the two ends as per customer's requirements | |||||||||
| Surface | Oiled, Galvanized, Phosphate etc | |||||||||
| Treatment | ||||||||||
| Technique | Cold drawn | |||||||||
| Application | 1. Automotive and mechanical pipes | |||||||||
| 2. Petroleum cracking pipes | ||||||||||
| 3. High Pressure Boiler Pipe | ||||||||||
| 4. Low and middle pressure fluid transportation pipeline | ||||||||||
| 5. Chemical fertilizer equipment pipes | ||||||||||
| 6. Heat exchanger pipes | ||||||||||
| Delivery | 1. BK (+C) | No heat treatment after last cold forming process. | ||||||||
| Conditions | 2. BKW (+LC) | After last heat treatment there is a light finishing pass (cold drawing) | ||||||||
| 3. BKS (+SR) | After the final cold forming process the tubes are stress relieve annealed. | |||||||||
| 4. GBK (+A) | After the final cold forming process the tubes are annealed in a controlled atmosphere. | |||||||||
| 5. NBK (+N) | After the final cold forming process the tubes are annealed above the upper transformation point in acontrolled atmosphere. | |||||||||
| Package | 1. Bundle Packing. | |||||||||
| 2. Plain end or vanished as per customer's request. | ||||||||||
| 3. Wrapped in waterproof paper. | ||||||||||
| 4. Sackcloth with several steel strips. | ||||||||||
5. Pack in heavy tri-wall boxes. | ||||||||||
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1.Auto and Motorcycle Parts
2.Exhaust Pipe for Generator
3.High Heels Steel Pipes
4. Campanula Seamless Steel Pipe
5.Bicycle Frame
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| 1 | |
| Are you a trading company or manufacturer? | |
Yea, we are manufacturer. We have our own manufacturer-Changzhou Chengqi Steel Pipe Factory. | |
Changzhou Drake International Trade Co.,Ltd. is our own export trade platform. | |
| URL: www.cqsteelpipe.com/ | |
| http://chengqisteelpipe.en.china.cn/ | |
| 2 | |
| How can I get the price? | |
| We usually quote within 24 hours after we get your inquiry by telling us the material, out diameter, | |
| wall thickness length, quantity and application of the steel pipe which you need. If you are very | |
| urgent to get the price, please inform us in email so that we will regard your inquiry priority. | |
| 3 | |
| How can I get a sample to check your quality? | |
| After price confirmation, you can require for samples to check our quality. | |
| we will provide you the sample for free, however we could only make sure the same material, the | |
| dimension will be much similar as your request but not same. And customer should afford the | |
| charge of shipment. | |
| 4 | |
| How long can I expect to get the sample? | |
| The samples will be sent to you via express and arrive in 3-5 days. | |
| You can use your own consignee account or prepay us if you do not have an account. | |
| 5 | |
| What about the lead time for mass production? | |
| Honestly, it depends on the order quantity and the season you place the order. | |
| 6 | |
| What is the Small Qty Process Charge. | |
| It is the payment for customer whose order qty is less then Min Order Qty. Because small qty of | |
| products should be processed same in the production flow as big qty and the average cost would | |
| get much higher than big ones. So there is a small Qty Process Charge to ensure the profit of our | |
| factory and usually the amount of it is about $250.00 | |
| 7 | |
| Could the pipe be customized for us? | |
| Yes. We are the professional manufacturer which has rich experience in Precision Seamless Steel | |
| Pipe manufacturing. | |
| We could print the logo and label under your requirements if you need OEM products. Beside this, | |
| we still do some refined processes like CNC cutting, chamfering, galvanization and tapping, if you | |
| have detailed spec or drawing.Our production lead time is within 30-45 days. | |
| 8 | |
| What is your terms of delivery? | |
| We accept EXW, FOB, CIF, DDU etc. You can choose the one which is the most convenient or cost | |
| effective for you. | |
| 9 | |
| Shipping | |
| European Countries: 22-28 days, | |
| The United States: East --13-16 days, West--21-28 days | |
| Brazil: 30-40 days | |
| Russia: 36 days | |
| Japan: 3 days | |
| Please advise your port in you inquiry for quoting, will quote for you specifically |
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