ASTM A792 SS Gr.37 (255) Prepainted Galvalume Coil

ASTM A792 SS Gr.37 (255) Prepainted Galvalume Coil
ASTM A792 SS Gr.37 (255) Prepainted Galvalume Coil
ASTM A792 SS Gr.37 (255) Prepainted Galvalume Coil
ASTM A792 SS Gr.37 (255) Prepainted Galvalume Coil
ASTM A792 SS Gr.37 (255) Prepainted Galvalume Coil
Product Name
ASTM A792 SS Gr.37 (255) Prepainted Galvalume Coil
FOB China USD 1100/MT
Galvalume steel
Steel Grade
ASTM A792 SS Gr.37 (255)
1200mm,1219mm,1220mm,1250mm or Customized
Lead Time
45 days from deposit received
Standard seaworthy packing
Payment Term
T/T, L/C
ASTM A792 is a standard for 55 % Aluminum-Zinc Alloy-Coated by the Hot Dip Process, which specifying the base metal of PPGL coil (pre-painted galvalume steel coil). SS Gr.37 is one of a structural steel grade in ASTM A792 standard, it required the yield strength no less than 255 Mpa. The reason of clients require PPGL but use Standard ASTM A792 is specifying the quality of base metal, which is the most important factor of quality and service life. The more coating mass the better the corrosion resistance.

ASTM A792 SS Gr.37 (255) Prepainted Galvalume Coil

Specification of Prepainted Galvalume Coil

Thickness: 0.1-1.0mm

Width: 30-1500mm

Color: As RAL color number or Customized

Painting Thickness: Primer 8μm (Max), Top coat 25μm (Max),Backer coat 5+15μm (Max),

Coating Mass: AZM15-AZM150

Steel Standard: ASTM A792/A792M

Steel Grade: ASTM A792 SS Gr.37

Yield Strength: 255Mpa (Min)

Tensile Strength: 360Mpa (Min)

Elongation: 18% (Min)



On this photo, you can see a inspector is testing the paint coating by using a paint coating test machine.

Every coil will be tested after finished production, the labor will cut a piece from the mother coil to test the thickness, width, coating mass, paint coating, color accuracy, hardness, yield strength, tensile strength,

elongation, bending test, etc. and keep all the digital and the sample in our labory. 

By this way, it not only ensure the quality, but also can be a proof for better after-sale service.

You can see a box in fron of the inspector, this is a light box can be simulated sunlight, put the PPGL sample into this box will help our inspector to check the color.

The specific requirement of ASTM A792 SS Gr.37 (255)

 Weight [Mass] of Coating Requirements

Coating DesignationMinimum Requirements
Triple-Spot TestSingle-Spot Test
Inch-Pound Units
Total Both Sides, oz/ft2Total Both Sides, oz/ft2
AZ300.30 0.26 
AZ350.35 0.30 
AZ400.40 0.35 
AZ500.50 0.43 
AZ550.55 0.50 
AZ600.60 0.52 
AZ700.70 0.60 

Coating DesignationMinimum Requirements
Triple-Spot TestSingle-Spot Test
SI Units
Total Both Sides,  g/m2Total Both Sides,  g/m2

Chemical Requirements of SS Grade 37[255]

DesignationComposition, %—Heat Analysis Element, maximum, Unless Otherwise Shown
SS Grade 37[255]0.20 1.35 0.10 0.04 0.25 0.20 0.15 0.06 0.008 0.008 0.025 ...

Mechanical Property Requirements, Structural Steel Base Metal (Longitudinal)

SI Units
GradeYield Strength,
min, MPa
Tensile Strength,
min, MPa
in 50 mm, min,
340 Class134045012
340 Class2340...12
340 Class334041012
550 Class1550570...
550 Class2550570...
550 Class35505703

Coating Bend Test Requirements—Structural Steel

GradeRatio of the Inside Bend Diameter to
Thickness of the Specimen
(Any Direction)
33 [230]1 1⁄2
37 [255]2
40 [275]2 1⁄2
50 Class 1, Class 2, and
Class 4
[340 Class 1, Class 2, and
Class 4]
80 Class 1, Class 2, and
Class 3
[550 Class 1, Class 2, and
Class 3]

A: Grades not subject to bend test requirements.

Suggested Minimum Inside Radii for Cold Bending

DesignationGradeMinimum Inside Radius for Cold
Structural Steel33 [230]1 1⁄2 t
37 [255]2t
40 [275]2t
50 Class 1, Class 2, and Class 4 [340 Class 1, Class 2,
and Class 4]
not applicable
60 [410]not applicable
70 [480]not applicable
80 class 1, Class 2, and Class 3 [550 Class 1, Class 2,
and Class 3]
not applicable


This photo shows dark green color PPGL coil, it can be produced to dark green roof sheets in buildings.

Pre-painted galvalume coil also called PPGL coil, which is covers steel sheet metallic coated by the hot-dip process and coil-coated with organic films for exterior exposed building products. Sheet of this designation is furnished in coils, cut lengths, and formed cut lengths. Building products include corrugated and various types of roll and brake-formed configurations.



This photo shows the PPGL and galvalume coils were loading in the bottom of cabin.

You can see the packages of some PPGL coils are in different color, they are customized packing by clients, they want to clear the outer package of PPGL coils in different colors.

The coils are loading in bottom of cabin, it because steel coils are heavy cargo and not afraid being pressed, mates usually mamages heavy goods in bottom and light goods piled upper.

We XINO Steel is one of the biggest professional manufacture of coating steel coils in China, our main products include PPGL, PPGI, GI, GL coils. We owns 4 production areas in total, the annual output of one factory is more than 600,000 metric tons.

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Name: Quincy F.        time:2022-05-10 10:06:36
Little costly but good quality... This prepainted galvalume coil is exactly what I needed. good size..

Name: Laird         time:2022-05-06 10:39:57
This prepainted galvalume coil worked perfectly. Will buy more.

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