NEW-ERA STEEL TUBE TECHNOLOGY CO.,LTD
| Payment Terms | T/T, L/C |
| Supply Ability | 2000tons per month |
| Delivery Time | 20-30days |
| Packaging Details | bundles packing with plastic bags wrapped |
| Standard | GOST 8639-82 |
| Production Process | cold deformed seamless |
| Size | 50x5,60x8,100x8,120x8 |
| Shape | rectangular,Square,hexagonal |
| Material | Steel 10,20,35,45 |
| Length | Maximal 12M |
| Brand Name | New-Era |
| Model Number | ASTM A500 |
| Certification | ISO9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, L/C | Supply Ability | 2000tons per month |
| Delivery Time | 20-30days | Packaging Details | bundles packing with plastic bags wrapped |
| Standard | GOST 8639-82 | Production Process | cold deformed seamless |
| Size | 50x5,60x8,100x8,120x8 | Shape | rectangular,Square,hexagonal |
| Material | Steel 10,20,35,45 | Length | Maximal 12M |
| Brand Name | New-Era | Model Number | ASTM A500 |
| Certification | ISO9001 | Place of Origin | China |
| High Light | square section steel tube ，hollow metal tube | ||
GOST 8639-82 steel 35 square steel steel pipes , cold deformed seamless hollow section steel tubes
Sizes of square pipes have to confirm the values indicated in the table below:
| Outside size A, mm | Wall thickness s, mm | Section square, cm2 | Weight of 1 m pipe, kg, | Inertia moment, cm4~ | Resistance moment, cm3~ |
| Ix=Iy | Wx=Wy | ||||
| 50 | 5 | 8.57 | 6.73 | 28.26 | 11.3 |
| 60 | 8 | 15.54 | 12.20 | 67.71 | 22.57 |
| 100 | 8 | 28.34 | 22.25 | 392.65 | 78.53 |
| 120 | 8 | 34.74 | 27.27 | 715.66 | 119.28 |
Steel density 7/85 g/cm3
Pipe static characteristic is calculated for R=1,5 s
4. Bending radius R should no more than 2 s.
5. Pipes are produced:
Random length
Seamless cold-deformed – 1.5-11m;
Fixed length
Seamless cold-deformed – 4.5-11m;
Multiple lengths
Seamless cold-deformed – 1.5-11m with tolerance for every cut 5 mm;
Total length of multiple length pipes can’t be more than upper limit of fixed length pipe. Tolerance for every ratio is 5mm (if other tolerance is not stipulated) and is a part of every ordered ratio.
6.Limit deviations for outside sizes, wall thickness & sides concavity can’t be more than indicated in the table below:
| Parameter name | Limit deviation of pipe size depending on the precision of production | |
| normal | high | |
| Outside sizes | +-0.3mm | +-0.25mm |
| Wall thickness: wall thickness ≤ 3.5mm wall thickness > 3.5mm
|
± 12.5% ± 12.5% |
± 12.5% ± 10.0% |
| Sides concavity and convexity: Up to 50mm Over 50 to 70mm Over 70 |
0.5mm 0.75mm 1.0mm |
0.5mm 0.5mm 0.8mm |
| Coiling of square & rectangular pipes | - | According to agreement with the customer |
7. Thickness variation can’t lead the wall out the limit deviations concerning wall thickness.
8. In pipe cross-section the deviation from right angle can’t be more than ±1.5°.
9. Pipe curvature can’t be more than 2 mm for 1m of length.
Pipes are produced without adjustment, in this case curvature is not regulated.
Company Details
Business Type:
Manufacturer
Year Established:
1988
Total Annual:
100000000-15000000
Employee Number:
150~200
Ecer Certification：
Verified Supplier
Zhejiang New Era Steel Tube Technology Co., Ltd is one of the best seamless steel tube products manufacturer and exporter in china. Our main products include cold drawn and cold rolled seamless steel tubes .We can manufacture non-standard and special application tubes, also according to the int... Zhejiang New Era Steel Tube Technology Co., Ltd is one of the best seamless steel tube products manufacturer and exporter in china. Our main products include cold drawn and cold rolled seamless steel tubes .We can manufacture non-standard and special application tubes, also according to the int...
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