NEW-ERA STEEL TUBE HOLDING
NINGBO PIPEWAY TRADE CO.,LTD
| Place of Origin: | China |
|---|---|
| Brand Name: | New Era |
| Certification: | ISO9001 |
| Model Number: | Gost 8733 / Gost 8734 |
| Minimum Order Quantity: | 1 tons |
| Price: | Negotiation |
| Packaging Details: | Bundles Package, Wooden Box Package |
| Delivery Time: | 45 days |
| Payment Terms: | T/T |
| Supply Ability: | 3000 tons/month |
| Product Name: | GOST 8645-68 Steel Pipe | Delivery Condition: | Cold Worked, Annealed |
|---|---|---|---|
| OD Size: | 6-168mm | WT Size: | 1-20mm |
| Steel Material: | Steel 10, 20, 35, 45, 10Mn2, | Process: | Cold Drawn,welded |
| Application: | Structural Tubes,Mechanical Tubing | Standard:: | GOST8645-68 GOST 8639 |
| Highlight: | Seamless Rectangular Steel Tubing,GOST 8645-68 Steel Pipe |
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GOST 8645-68 (rectangular, seamless cold-deformed pipes).
Materials:Steel 35,Steel45,Steel10,Steel 20,etc
Sizes of square pipes have to confirm the values indicated in the table below:
| Size A, mm | Size B, mm | Wall thickness s, mm | Section square, cm2 | Weight of1 mpipe, kg, | Inertia moment, cm4= | Resistance moment, cm3= | ||
| Ix | Iy | Wx | Wy | |||||
| 90 | 60 | 5 | 13.57 | 10.65 | 75.04 | 142.8 | 25.01 | 31.75 |
| 120 | 80 | 8 | 28.34 | 22.25 | 268.4 | 514.5 | 67.11 | 85.76 |
Steel density 7/85 g/cm3
| Mechanical composition | ||||
| Steel grade | Tensile strength, N/mm2 (min) | Yield strength, N/mm2 (min) | Elongation, % (min) | Hardness HB (≤) |
| 10 | 333 | 206 | 26 | 137 |
| 20 | 412 | 245 | 23 | 156 |
| 15Cr5Mo | 392 | 216 | 22 | 170 |
| 12Cr8 | 392 | 216 | 22 | 170 |
| 10Mn2 | 412 | 245 | 21 | 197 |
Pipe static characteristic is calculated for R=1,5
Pipes length & limit deviations should correspond to GOST 8639.
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 or Cold Rolling, On line inspection
5. Heat Treatment:+SR, +A, +N
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.
FAQ:
1. Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to check tube quality.
You need to in charge of Express costs.
2. How about your production capacity?
3000 tons/Month.
3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.
4. Where is your factory?
Jiaxing city, 2 hours away from Shanghai.
5. How can I get the quotation A.S.A.P?
Please send us an inquiry with full details as following,quotation will sent to you A.S.A.P:
1). Tube Standard
2). Steel Grade
3). Tube Size and Size Tolerance
4). Tube length
5). Quantity
6). If any special requirements
6. How about the minimum order quantity?
Normally for one size above 1 ton.
Welcome to contact us! Thanks.