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FE490 Dilute Alloy Steel Pipe Square Tube
1. STANDARD:
GB/T3094-2000, GB/T6728-2002, ASTM A500, JIS G 3466, DIN EN 10210, GB/T178-2005
2. MATERIAL:
Q195, Q215, Q235, Q275, Q345, 20#, 45#, Stainless steel, Seamless steel, Alloy steel.
3. SURFACE:
Bared, Galvanized, Oiled, Color Paint, 3PE; Or Other Anti-corrosive Treatment.
4. TECHINQUE:
Hot rolled, Cold rolled, ERW, High-frequency welded.
5. APPLICATION:
(1).Machinery manufacture: glass machinery, agricultural machinery, textile machinery, papermaking machinery, food machinery, electrical equipment, sanitation equipment.
(2).Roads and Bridges: railway, aviation, expressway, overpass, road fence, traffic signs.
(3).Construction engineering: steel structure construction, sports venue, three-dimensional garage, exhibition hall.
(4).Decoration: wrought iron doors and windows, outdoor advertising, pavilion and vestibule, glass curtain wall.
(5).Transportation: automobile manufacture, ship manufacture, container, tricycle, tower crane.
6. Manufacturing Process:
1).Directly into Square: make continuous angle deformation of cold-rolled or hot-rolled steel plate directly, and then by high frequency welding form a rectangular steel tube forming method. Also
known as square-square method.
2). Round to square: make continuous angle deformation of cold-rolled or hot-rolled steel plate directly, and then by high frequency welding form a round steel tube forming method, though the
reshaping finally form a rectangular steel tube forming method. Also known as round to square method.
7. Technical requirements:
1). Chemical Composition:
Yield Strength Grade |
Demotic Raw-material Grade |
235 |
Q235B, Q235C, Q235D, Q235qC, Q235qD |
345 |
Q345A, Q345B,Q345C,Q345D,Q345Qc, Q345Qd, StE355, B480GNQR |
Carbon Equivalent
Ceq(%)=C+Mn/6+Si/24 +Ni/40+Cr/5+Mo/4+V/14
Ⅰgrade product Ceq(%)
Yield Strength Grade |
235 |
345 |
390 |
Ceq(%) |
≤0.36 |
≤0.43 |
≤0.45 |
Note: In order to improve the performance of steel,390 could add the microelement such as V, Nb, Ti, Mo and N etc. | |||
2). Mechanical Property:
Yield Strength Grade |
W.T (mm) |
Yield Strength (Mpa) |
Tensile Strength (Mpa) |
Elongation (%) |
Impact Value (J) |
235 |
4~12>12~22 |
≥235 |
≥375 |
≥23 |
≥27 |
345 |
4~12>12~22 |
≥345 |
≥470 |
≥21 |
≥27 |
390 |
4~12>12~22 |
≥390 |
≥490 |
≥19 |
≥27 |
3). ⅠGrade Product Yield Strength:
Yield Strength Grade |
Outside perimeter (mm) |
Wall Thickness (mm) |
Yield Strength % |
|
Directly to Square |
Round to Square |
|||
235 |
≥800 |
12~22 |
≤80 |
≤90 |
345 | ||||
390 |
≤85 |
≤90 |
||
Note: when the outer perimeter less than 800mm,can be determined by supply and buyer | ||||
8.What advantage do we have?
- Our factory established in 1997, we have 16 years experience in this area.
- We engaged in research square and rectangular steel tube at the beginning of company established, now our technology is far ahead.
- We have a leading international, domestic origination of production units.
- We have passed the standards of ASTM A500, JIS G 3466, DIN EN10210, GB/T178-2005, GB/T 3094-2000 and GB/T6728-2002.
- Our products in different sizes, and different thickness (1.0mm-32mm), can satisfy your desire a station buy need.
- Perfect after-sale service to solve your worries.
Send Inquiry to This Supplier
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