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SYSCO-Main Products (Galvanized Products)
Galvanized Products
| 55% AI-Zn ALLOY-COATED STEEL COILS |
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The aluminum-zinc alloy for 55% Al-Zn alloy-coated steel coils consists of 55%
aluminum, 43.4% zinc and 1.6% silicon, solidified at 600ºC high temperature.
The whole structure is a quaternary AI-Fe-Si-Zn compound which becomes a
protection layer on the steel sheet to prevent penetration of corrosive
factors effectively.
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| GALVANIZED STEEL COILS |
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The zinc layer on the surface of the galvanized steel sheet isolates the steel sheet
from atmosphere to prevent further corrosion of the base sheet and ensures a long
service life of the base sheet, due to the excellent corrosion resistance of the
galvanized steel sheets.
Besides, our galvanized steel sheets are economic and functionally diverse, meeting
the requirements of different environments and applications and provide high added
value for various combination of products. Now, the galvanized steel sheets are in
common use in many fields such as precision instruments, computers, electronic
appliances, architectures, color coating, etc.
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CHARACTERISTICS |
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CORROSION RESISTANCE |
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The improved corrosion resistance of 55% AI-Zn alloy-coated steel coils is
derived from the unique combination of the barrier protection of the aluminum
and the sacrificial protection of the zinc. The formation of an insoluble
aluminum oxide layer provides the barrier protection while the zinc provides
a sacrificial protection at cut edges, scratches and areas of coating damage.
Outdoor exposure testing of 55% AI-Zn alloy-coated steel onus has been conducted
for over 20 years in various atmospheric environments. This testing also
demonstrated a superior cut edge protection of 55% AI-Zn alloy-coated steel sheet
than the galvanized steel sheet.
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HEAT RESISTANCE |
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Similar to the aluminum coated steel sheet that can resist high temperature
oxidation, 55% AI-Zn alloy-coated steel sheet demonstrates better resistance
to high temperature than the galvanized steel sheet. SYSCO's 55% AI-Zn
alloy-coated steel sheet can be used in temperatures up to 315ºC.
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| HEAT TRANSMISSION AND REFLECTIVITY |
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55% AI-Zn alloy-coated steel coil has a high reflectivity value making it an
effective barrier against heat.
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APPLICATIONS |
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BUILDING & CONSTRUCTION |
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Floor decks, ceilings, verandas, rolling doors, warehouse, partitions, sheds,
gutters, wall, underground piping, sashes, beams, fences, scaffolding, indoor
decorations, ducts, ventilating pipes, steel frames and cable trays.
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ELECTRICAL APPLIANCES |
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Freezers, video recorder cases, motor cases, lighting fittings, water heaters,
washing machines, refrigerators, stoves, air conditioners, dehumidifiers,
fluorescent light housings, electrical heaters, toasters, microwave oven
enclosures and switch boxes.
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TRANSPORTATION |
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Containers, under body panels, bus & truck body panels, fuel tanks, noise screens,
highway signs, air cleaners, conveyor systems and guard rails.
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AGRICULTURAL EQUIPMENT |
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Barns, drying machines, animal houses, hoppers, irrigation systems, greenhouses,
water tanks, sheds, silos, agricultural implements and feeders.
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FURNITURE & OTHERS |
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Vending machines, drums, cans, pails, sauna inner parts, chimney pipes, entertainment machines, solar collectors, office equipment, steel furniture, tool boxes, garages and waste bins.
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COMPUTER'S APPLIANCES |
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Computer shells and communication instruments.
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MANUFACTURING PROCESS |
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SPECIFICATION |
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55% AI-Zn ALLOY-COATED STEEL COILS |
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A.Size Available
JIS
Product Name | Hot-Dip Galvanized Coils |
Standard | Size Available |
JIS / SYSCO | Skinpass | Without Skinpass |
Specification | Order Width (mm) | Base Material Gauge (mm) | Order Width (mm) | Base Material Gauge (mm) |
SGCC | 900∼940
940∼1040
1040∼1100
1100∼1220
1220∼1230
1230∼1250 | 0.20∼1.60
0.23∼1.60
0.24∼1.60
0.25∼1.60
0.26∼1.60
0.35∼1.60 | 900∼940
940∼1040
1040∼1100
1100∼1220
1220∼1230
1230∼1250
1250∼1260
1260∼1270 | 0.20∼1.60
0.23∼1.60
0.24∼1.60
0.25∼1.60
0.26∼1.60
0.35∼1.60
0.35∼1.22
0.58∼1.22 |
SGC 340 | 900∼1050
1050∼1220
1220∼1250
1250∼1260 | 0.20∼1.60
0.28∼1.60
0.40∼1.60
0.80∼1.60 | 900∼1050
1050∼1220
1220∼1250
1250∼1260 | 0.20∼1.60
0.28∼1.60
0.40∼1.60
0.80∼1.60 |
SGC 400 | 900∼960
960∼1110
1110∼1220
1220∼1240
1240∼1260 | 0.28∼1.60
0.35∼1.60
0.38∼1.60
0.40∼1.60
0.60∼1.60 | 900∼1100
1100∼1240
1240∼1260
1260∼1270 | 0.35∼1.60
0.40∼1.60
0.60∼1.60
0.70∼1.20 |
SGC 440
SGC 490 | 900∼920
920∼1230
1230∼1250 | 0.28∼1.60
0.35∼1.60
0.40∼1.60 | 900∼920
920∼1230
1230∼1250 | 0.28∼1.60
0.35∼1.60
0.40∼1.60 |
SGC 570
SGCH | 900∼920
920∼940
940∼1230
1230∼1250 | 0.21∼1.60
0.25∼1.60
0.28∼1.60
0.47∼1.40 | 900∼920
920∼940
940∼1230
1230∼1250 | 0.21∼1.60
0.25∼1.60
0.28∼1.60
0.47∼1.40 |
SGCD1 | 900∼1250 | 0.30∼1.60 | 900∼1250 | 0.30∼1.60 |
Coating Mass and Applicative Range of Gauge of Cold-Rolled Coils. | Z08 , Z10：0.30 ∼ 1.60 mm
Z12 , Z18 , Z20 , Z22 , Z25 , Z27：0.20 ∼ 1.60 mm
Z35 , Z450：.40 ∼ 1.60 mm8 |
Product Name | Hot-Dip 55% AI-Zn Alloy-Coated Steel Coils |
Standard | Size Available |
SYSCO | Skinpass | Without Skinpass |
Specification | Order Width (mm) | Base Material Gauge (mm) | Order Width (mm) | Base Material Gauge (mm) |
SGLC | 900∼920
920∼1000
1000∼1200
1200∼1220
1220∼1250 | 0.20∼1.20
0.22∼1.20
0.23∼1.20
0.25∼1.20
0.30∼0.80 | 900∼920
920∼1010
1010∼1200
1200∼1220
1220∼1250 | 0.20∼1.20
0.22∼1.20
0.23∼1.20
0.25∼1.20
0.30∼1.20
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SGL 340 | 900∼1110
1110∼1220 | 0.30∼1.20
0.37∼1.20 | 900∼920
920∼1250 | 0.27∼1.20
0.30∼1.20 |
SGL 400 | 900∼920
920∼1220 | 0.32∼1.20
0.35∼1.20 | 900∼1250
| 0.35∼1.20 |
SGL 440
SGL 490 | 900∼1050
1050∼1220 | 0.33∼1.20
0.40∼1.20 | 900∼1050
1050∼1250 | 0.33∼1.20
0.40∼1.20 |
SGL 570 | 900∼914
914∼1050
1050∼1220 | 0.21∼1.00
0.23∼1.00
0.30∼1.00 | 900∼914
914∼1050
1050∼1220 | 0.21∼1.00
0.23∼1.00
0.30∼1.00 |
SGLD1 | 900∼1250 | 0.30∼1.20 | 900∼1250 | 0.30∼1.20 |
Coating Mass and Applicative Range of Gauge of Cold-Rolled Coils. | AZ050, AZ070, AZ090, AZ100, AZ120, AZ150, AZ165：0.20~1.20mm
AZ180：0.20 ∼ 0.96 mm
AZ200：0.30 ∼ 0.80 mm |
ASTM
Product Name | Hot-Dip Galvanized Coils |
Standard | Size Available |
ASTM (2001 Ed.) | Skinpas | Without Skinpass |
Specification (Metric) | Specification (Imperial) | Order Width(mm) | Base Material Gauge (mm) | Order Width(mm) | Base Material Gauge (mm) |
A653M CS
A653M FS | A653 CS
A653 FS | 900∼940
940∼1040
1040∼1100
1100∼1220
1220∼1230
1230∼1250 | 0.20∼1.60
0.23∼1.60
0.24∼1.60
0.25∼1.60
0.26∼1.60
0.35∼1.60 | 900∼940
940∼1040
1040∼1100
1100∼1220
1220∼1230
1230∼1250
1250∼1260
1260∼1270 | 0.20∼1.60
0.23∼1.60
0.24∼1.60
0.25∼1.60
0.26∼1.60
0.35∼1.60
0.35∼1.22
0.58∼1.22 |
A653M SS Grade230
| A653 SS specGrade33 | 900∼940
940∼1040
1040∼1100
1100∼1220
1220∼1230
1230∼1250 | 0.20∼1.60
0.23∼1.60
0.24∼1.60
0.25∼1.60
0.26∼1.60
0.35∼1.60 | 900∼940
940∼1040
1040∼1100
1100∼1220
1220∼1230
1230∼1250
1250∼1260
1260∼1270 | 0.20∼1.60
0.23∼1.60
0.24∼1.60
0.25∼1.60
0.26∼1.60
0.35∼1.60
0.35∼1.22
0.58∼1.22 |
A653M SS Grade255 | A653 SS
Grade37 | 00∼1050
1050∼1220
1220∼1250
1250∼1260 | 0.20∼1.60
0.28∼1.60
0.40∼1.60
0.80∼1.60 | 900∼1050
1050∼1220
1220∼1250
1250∼1260 | 0.20∼1.60
0.28∼1.60
0.40∼1.60
0.80∼1.60 |
653M SS Grade275 | A653 SS Grade40 | 900∼960
960∼1110
1110∼1220
1220∼1240
1240∼1260 | 0.28∼1.60
0.35∼1.60
0.38∼1.60
0.40∼1.60
0.60∼1.60 | 900∼1100
1100∼1240
1240∼1260
1260∼1270 | 0.35∼1.60
0.40∼1.60
0.60∼1.55
0.70∼1.20 |
A653M SS Grade340
| A653 SS Grade50 | 900∼920
920∼1230
1230∼1250 | 0.28∼1.60
0.35∼1.60
0.40∼1.60 | 900∼920
920∼1230
1230∼1250 | 0.28∼1.60
0.35∼1.60
0.40∼1.60 |
A653M SS Grade550 | A653 SS Grade80 | 900∼920
920∼940
940∼1230
1230∼1250 | 0.21∼1.60
0.25∼1.60
0.28∼1.60
0.47∼1.40 | 900∼920
920∼940
940∼1230
1230∼1250 | 0.21∼1.20
0.25∼1.60
0.28∼1.60
0.47∼1.40 |
A653M DDS | A653 DDS | 900∼1250 | 0.30∼1.60 | 900∼1250 | 0.30∼1.60 |
Coating Mass and Applicative Range of Gauge of Cold-Rolled Coils.
| Metric:
Z080：0.30 ∼ 1.60 mm
Z120 , Z180 , Z275：0.20 ∼ 1.60 mm
Z350：0.40 ∼ 1.60 mm
Imperial:
G40 , G60 , G90：0.20 ∼ 1.60 mm
G115：0.40 ∼ 1.60 mm |
B.Range of Weight: 40g/m2 ~ 200g/m2
C.Surface: Regular spangle, Extra smooth
D.Grade Available: commercial, lock forming, drawing and structural grades
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Classified symbol
cold-rolled base metal | Yield Point Minimum N/mm2 | Tensile Strength Minimum
N/mm2 | Elongation Minimum % | Application |
Nominal Thickness mm (t) |
JIS G3321-1998 | SYSCO specification | 0.25≤
t<0.4 | 0.4≤
t<0.6 | 0.6≤
t<1.0 | 1.0≤
t<1.6 | 1.6≤
t<2.3 |
| SGLCC | SGLC | (205) | (270) | (20) | (21) | (24) | (24) | (25) | Commercial |
| SGLCD | SGLD1 | --- | 270 | --- | 27 | 31 | 32 | 33 | Drawing |
--- | SGL340 | 245 | 340 | 20 | 20 | 20 | 20 | 20 | Structural |
| SGLC400 | SGL400 | 295 | 400 | 16 | 17 | 18 | 18 | 18 | Structural |
| SGLC440 | SGL440 | 335 | 440 | 14 | 15 | 16 | 18 | 18 | Structural |
| SGLC490 | SGL490 | 365 | 490 | 12 | 13 | 14 | 16 | 16 | Structural |
| SGLC570 | SGL570 | 560 | 570 | --- | --- | --- | --- | --- | Structural |
ASTM Designation
1999 | Yield Point Minimum | Tensile Strength Minimum | Elongation Minimum % | Application |
ksi(MPa) | ksi(MPa) |
| A792(M)-99 CS TYPE A,B,C | --- | --- | --- | Commercial |
| A792(M)-99 FS | --- | --- | --- | Lock Forming |
| A792(M)-99 DS | --- | --- | --- | Drawing |
| A792(M)-99 SS Grade33(230) | 33(230) | 45(310) | 20 | Structural |
| A792(M)-99 SS Grade37(255) | 37(255) | 52(360) | 18 | Structural |
| A792(M)-99 SS Grade40(275) | 40(275) | 55(380) | 16 | Structural |
| A792(M)-99 SS Grade50(345) | 50(345) | 65(450) | 12 | Structural |
| A792(M)-99 SS Grade80(550) | 80(550) | 82(570) | --- | Structural |
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Remark: | JIS/SYSCO: ( )The values in parentheses in the table are only for informative reference. |
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ASTM:A792(M) is metric, represented by the number within ().
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GALVANIZED STEEL COILS |
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A.Surface Treatment: Regular Spangle, Mini Spangle, Extra Smooth
| 1. | REGULAR SPANGLE: |
| Regular spangle is also called normal spangle which is naturally formed without any additional treatment during galvanizing. |  |
| 2. | MINI SPANGLE: |
| The spangle is restrained and formed as mini spangle by reducing the lead content in the zinc liquid or by blowing the zinc powder from the equipment installed on the zinc pot. |  |
| 3. | EXTRA SMOOTH: |
| The mini spangle is further skin-passed to produce the extra smooth surface. |  |
B.Grade Available: commercial, lock forming, drawing and structural grades
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JIS G3302-1998 / SYSCO
Classified symbol | Yield Point Minimum N/mm2 | Tensile Strength Minimum
N/mm2 | Elongation Minimum % | Application |
Nominal Thickness mm (t) |
cold-rolled base metal | hot-rolled base metal | 0.25≤
t<0.4 | 0.4≤
t<0.6 | 0.6≤
t<1.0 | 1.0≤
t<1.6 | 1.6≤
t<2.5 | t≥2.5 |
| SGCC | SGHC | --- | --- | --- | --- | --- | --- | --- | --- | Commercial |
| SGCH | --- | --- | --- | --- | --- | --- | --- | --- | --- | Commercial Hard |
| SGCD1 | --- | --- | 270 | --- | 34 | 36 | 37 | 38 | --- | Drawing |
| SGC340 | SGH340 | 245 | 340 | 20 | 20 | 20 | 20 | 20 | 20 | Structural |
| SGC400 | SGH400 | 295 | 400 | 18 | 18 | 18 | 18 | 18 | 18 | Structural |
| SGC440 | SGH440 | 335 | 440 | 18 | 18 | 18 | 18 | 18 | 18 | Structural |
| SGC490 | SGH490 | 365 | 490 | 16 | 16 | 16 | 16 | 16 | 16 | Structural |
--- | SGH540 | 400 | 540 |  | | | 16 | 16 | 16 | Structural |
| SGC570 | | 560 | 570 | --- | --- | --- | --- | --- | --- | Structural |
ASTM Designation
1999 | Yield Point Minimum | Tensile Strength Minimum | Elongation Minimum % | Application |
ksi(MPa) | ksi(MPa) |
| A653(M)-99 CS TYPE A,B,C | --- | --- | --- | Commercial |
| A653(M)-99 FS TYPE A,B | --- | --- | --- | Lock Forming |
| A653(M)-99 DDS | --- | --- | --- | Drawing |
| A653(M)-99 SS Grade33(230) | 33(230) | 45(310) | 20 | Structural |
| A653(M)-99 SS Grade37(255) | 37(255) | 52(360) | 18 | Structural |
| A653(M)-99 SS Grade40(275) | 40(275) | 55(380) | 16 | Structural |
| A653(M)-99 SS Grade50(340) | 50(340) | 65(450) | 12 | Structural |
| A653(M)-99 SS Grade80(550) | 80(550) | 82(570) | --- | Structural |
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Remark:ASTM:A653(M) is metric, represented by the number within (). |
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