1.STANDARD:
GB/T3094-2000, GB/T6728-2002, ASTM A500, JIS G3466, 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; OrOther Anti-corrosive Treatment.
4.TECHINQUE:
Hot rolled, Cold rolled, ERW, High-frequencywelded.
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 structureconstruction, sports venue, three-dimensional garage, exhibitionhall.
(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.Assessment Criteria
Assessment Criteria | ⅠGrade | Ⅱgrade | ||
Wall thickness/t | 4mm≤t≤10mm ±8%t | 4mm≤t≤10mm ±8%t | ||
10mm≤t≤22mm ±6%t | 10mm≤t≤22mm ±6%t | |||
Suitable for flat parts | Suitable for flat parts | |||
Right Angle | 90°±1.0° | 90°±1.5° | ||
Corner radius of circular arc | t≤6mm(1.5-2.5)t | |||
6mm≤t≤10mm(2-3)t | ||||
T>10mm(2.5-3.5)t | ||||
Concave and convex degree | ≤5% side length | ≤6% side length | ||
Bending degree | ≤1.5mm/m, total bending degree≤0.15% specifiedlength | ≤2mm/m, total bending degree≤0.2% specifiedlength | ||
Distortion degree | 2mm+0.5mm/m | - | ||
Scale accuracy | Ordinary precision 0- +50mm | Ordinary precision 0-+70mm | ||
Fine scale 0- +5mm | Fine scale 0- +15mm | |||
Cutting quality | 100mm≤side length≤300mm | 100mm≤side length≤300mm | ||
Cutting slope≤3mm | Cutting slope≤4mm | |||
300mm<side length≤500mm | 300mm<side length≤550mm | |||
Cutting slope≤3mm | Cutting slope≤6mm | |||
End without cutting burr | End with few cutting burr | |||
