NEW-ERA STEEL TUBE TECHNOLOGY CO.,LTD
| Payment Terms | T/T |
| Supply Ability | 3000 tons/month |
| Delivery Time | 45 days |
| Packaging Details | Bundles Package, Wooden Box Package |
| Material | 30ХГСА 30HGSA 30CrMnSiA |
| Delivery Condition | HR, CW, SR, A, N |
| OD Size | 6-159mm |
| WT Size | 1-30mm |
| Manufacture process | cold drawn;cold rolled;hot rolled |
| Application | Mechanical Purpose |
| Product Name | Round Steel Tubing |
| Advantage | Excellent Strength and Durability |
| Brand Name | New Era |
| Model Number | GOST8734-75 GB/T8163-2009 |
| Certification | ISO9001,TS16949 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 3000 tons/month |
| Delivery Time | 45 days | Packaging Details | Bundles Package, Wooden Box Package |
| Material | 30ХГСА 30HGSA 30CrMnSiA | Delivery Condition | HR, CW, SR, A, N |
| OD Size | 6-159mm | WT Size | 1-30mm |
| Manufacture process | cold drawn;cold rolled;hot rolled | Application | Mechanical Purpose |
| Product Name | Round Steel Tubing | Advantage | Excellent Strength and Durability |
| Brand Name | New Era | Model Number | GOST8734-75 GB/T8163-2009 |
| Certification | ISO9001,TS16949 | Place of Origin | China |
| High Light | seamless alloy steel tube ，alloy steel seamless tubes ，alloy round tube | ||
Application:seamless steel tubes for oil and gas and geological drill rods application
30ХГСА 30HGSA 30CrMnSiA
Chemical composition, %
| C | Si | Mn | Ni | S | P | Cr | Cu |
| 0.28 - 0.34 | 0.9 - 1.2 | 0.8 – 1.1 | Up to 0.3 | Up to 0.025 | Up to 0.025 | 0.8 - 1.1 | Up to 0.3 |
Temperature of 30HGSA material critical points.
| Ac1 = 760 , Ac3(Acm) = 830 , Ar3(Arcm) = 705 , Ar1 = 670 , Mn = 352 |
Mechanical properties, Т=20oС, 30HGSA material.
| Assortment | Size | Direction | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPа | MPа | % | % | rJ / m2 | - |
| Stick | Æ 25 | 1080 | 830 | 10 | 45 | 490 | tempering 880oC, oil, drawback 540oC, water | |
| Forged pieces | 500-750 | 14 |
| Hardness 30HGSA after annealing , | HB 10 -1 = 229 МPа |
Physical properties 30HGSA material.
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
| Degree | MPа | 1/Degree | Watt /(m*degree) | Kg /m3 | J / (kg · degree) | Ohm · м |
| 20 | 2.15 | 38 | 7850 | 210 | ||
| 100 | 2.11 | 11.7 | 38 | 7830 | 496 | |
| 200 | 2.03 | 12.3 | 37 | 7800 | 504 | |
| 300 | 1.96 | 12.9 | 37 | 7760 | 512 | |
| 400 | 1.84 | 13.4 | 36 | 7730 | 533 | |
| 500 | 1.73 | 13.7 | 34 | 7700 | 554 | |
| 600 | 1.64 | 14 | 33 | 7670 | 584 | |
| 700 | 1.43 | 14.3 | 31 | 622 | ||
| 800 | 1.25 | 12.9 | 30 | 693 | ||
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Technological properties of 40X material.
| Weld ability: | limited weld ability |
| Flocsensitivity: | sensitive |
| Tendency to the temper brittleness: | There is such a tendency |
Designations:
| Mechanical properties: | |
| sв | - Short-term breaking point , [МPа] |
| sT | - Proportional limit (yield strength for residual deformation), [МPа] |
| d5 | - Elongation at the time of abruption , [ % ] |
| y | - Contraction , [ % ] |
| KCU | - Impact strength , [ кJ / m2] |
| HB | - Brinnel hardness , [МPа] |
| Physical properties:
| |
| T | - Temperature when given values where received , [Degree] |
| E | - Coefficient of elasticity of the first type , [МPа] |
| a | - Coefficient of temperature (linear) expansion (interval 20o - T ) , [1/Degree] |
| l | - Heat conductivity (heat capacity) , [Watt / (m · degree)] |
| r | - Material density , [kg / m3] |
| C | - Specific heat capacity (interval 20o - T ), [J / (kg · degree)] |
| R | - Resistivity, [ohm · m] |
Weld Ability:
Without limits - welding is carried without heating and further heat treatment
Limited weld ability – Welding is possible at the heating up to 100-120°C and further heat treatment
Difficult weld ability - Additional operations are necessary to get good weld joints: heating up to 200-300°C during welding, heat treatment after welding - annealing
About US:
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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