Item | Galvanized Steel Gi Coils Sheet |
Grade | 200 series,300 series,400 series |
Standard | ASTM ,DIN , JIS,EN, BS,GB |
Surface | Polishing,annealing,pickling,bright 2B,BA,NO.1,NO.4,NO.8,8K,mirror,brushed finish |
Type | Hot rolled and cold rolled |
Material | Q195,Q215,Q235,08AL,SPCC,SPCD,SPCE,SPCEN,ST12,ST13,ST14,ST15,ST16,DC01,DC03,DC04,DC05,DC06 |
Size | width:20mm-1500mm lenth:Customer's Requirement thickness:0.12-20mm |
Package | 3 layers of packing. Inside is craft paper, Middle is water plastic
film and outside GI steel sheet to be covered by steel strips with
lock, with inner coil sleeve. |
Aplications | a) General service industries (petroleum, food, chemical,paper,
fertilizer,
b) fabric, aviation and nuclear)
b) Fluid, gas and oil transport
c) Pressure and heat transmission
d) Construction and ornament
e) Boiler heat vessels
f) Water tank for solar energy |
Cold rolled coil (annealing state) : the cold hard coil is obtained
by cover annealing before rolling. After annealing, the work
hardening phenomenon and internal stress are eliminated (greatly
reduced), that is, the yield strength is reduced close to that
before cold rolling.
Cold rolled coil is made of hot rolled coil as raw material and
rolled at room temperature below recrystallization temperature,
including plate and coil. Which into the delivery of steel plate,
also known as box plate or plate; Long length, delivery in coils
called steel strip, also known as coil plate.
Specification: thickness 0.2-4mm, width 600-2000mm, length of steel
plate 1 200-6000mm.
Q195a-q235a, Q195AF-Q235AF, Q295A(B)-Q345 A(B); SPCC, SPCD, SPCE,
ST12-15; DC01-06
Performance: mainly used low carbon steel, requires good cold
bending and welding performance, as well as certain stamping
performance.
Rolled plate
Coil is a type of sheet of steel. It is actually a long, narrow
sheet of steel supplied in rolls.
Roll and plate are almost a cut - out package
Cold hard coil plate is hot rolled coil plate after pickling, cold
rolling. Can be said to be a cold rolled sheet roll.
Cold rolled coil (annealing state) : hot rolled coil after
pickling, cold rolling, cover annealing, leveling, (finishing).
There are three main differences between the two:
1. In appearance, the general cold and hard coil board is slightly
black.
2. The surface quality, structure and dimensional accuracy of
cold-rolled plate are better than that of cold-rolled plate.
3, performance, because the hot rolled coil plate through the cold
rolling process directly obtained by the cold hard coil plate in
the cold rolling hardening, resulting in increased yield strength,
and residual part of the internal stress, external performance is
"hard" so called cold hard coil plate.
Therefore, yield strength: the cold hard coil is larger than the
cold rolled coil (annealing state), which makes the cold rolled
coil (annealing state) more conducive to stamping forming.
Generally, the default delivery state of cold rolled sheet is
annealed.
