ALLGAL® steel hollow sections offer fabricators, builders and manufacturers so many benefits that it is now one of the leading Zinc coated tubulars available on the Australian market today. Whether it's for a shade structure, cattle yard, bus shelter, floor framing or fence post, ALLGAL is now specified and used in a myriad of applications across Australia and New Zealand.
ALLGAL®combines the strength and durability of structural steel with the corrosive protection properties of Orrcon Steel's unique duplex coating system. This coating system comprises a uniform and consistent electro-galvanized zinc coating and Clear-Tec clear polymer protective coating. Because ALLGAL® is manufactured with high purity zinc on both sides prior to being cold-formed into hollow section, all ALLGAL products are protected from corrosion on the inside and out.
What makes ALLGAL® a Better Alternative?
ALLGAL® is an excellent alternative to other in-line galvanized and hot-dip galvanized steel sections.
Benefits:
- Provides sound corrosion protection in mildly corrosive environments.
- Fast, safe and easy to weld.
- Easier and faster to laser process.
- Provides for a superior paint and powdercoat finish.
- Zinc coating is easy to repair.
- Safe to handle.
- Available in MINIPAK® quantities.
- Available in a larger size range than other in-line galvanized steel hollow sections.
ALLGAL® COATING INFO
Product Specification
Orrcon Steel’s ALLGAL steel hollow sections are manufactured to comply with the mechanical property requirements of: AS/NZS 1163 Cold-Formed Structural Steel Hollow Sections in grades C250 L0, C350 L0, C450 L0 and the minimum properties of AS 1074 Steel Tubes and Tubulars for Ordinary Service.
|
Minimum Strength (MPa) |
Minimum Elongation (%) |
||||||||
|---|---|---|---|---|---|---|---|---|---|
|
CHS do/t |
RHS/SHS b/t, d/t |
||||||||
|
Australian |
Grade |
Yield |
Tensile |
≤15 |
>15 ≤30 |
>30 |
≤15 |
>15 ≤30 |
>30 |
|
AS/NZS 1163 |
250 |
≥ 250 |
≥ 320 |
18 |
20 |
22 |
14 |
16 |
18 |
|
350 |
≥ 350 |
≥ 430 |
16 |
18 |
20 |
12 |
14 |
16 |
|
|
450 |
≥ 450 |
≥ 500 |
12 |
14 |
16 |
10 |
12 |
14 |
|
|
AS 1074 |
250 |
≥ 195 |
≥ 320 |
20 |
|||||
ALLGAL complies with the coating weight requirements of AS 4750 Electrogalvanized (zinc) Coatings on Ferrous Hollow and Open Sections, class ZE50/50. The minimum average zinc coating weight is 50 grams per square metre on the inside and outside surface of the tube.
Orrcon Steel applies a clear water-based polymer coating called CLEAR-TEC® to the external surface of ALLGAL® which provides additional shelf life protection. The total coating thickness of ALLGAL® plus CLEAR-TEC® is a minimum of 11microns.
Dimensional tolerances are specified to meet the minimum requirements of AS/NZS 1163 and/or AS 1074.
|
Product Attribute |
AS/NZS 1163 |
AS 1074 |
||
|---|---|---|---|---|
|
Thickness |
± 10% |
LGT |
-8%, +Unlimited |
|
|
MED/HVY |
-10%, +Unlimited |
|||
|
Outside Dimensions |
± 1%, minimum of ± 0.5mm |
± 1% |
||
|
Corner Radius |
≤ 50x50 |
1.5t to 3.0t |
N/A |
|
|
> 50x50 |
1.8t to 3.0t |
|||
|
Concavity/convexity |
SHS/RHS |
Max. 0.8mm or 0.5mm, whichever is greater |
||
|
Squareness of Sides |
Adjacent sides 90o ± 1 o maximum |
|||
|
Out-of-roundness |
2% for CHS with D/T less than 100 |
|||
|
Twist |
2+0.5mm/m of length |
|||
|
Straightness |
CHS ≤ 0.20%, SHS/RHS ≤ 0.15% of total length |
0.2% of total length |
||
|
Linear Mass |
≥ 0.96 x Specified nominal mass |
≥ 0.96 x Specified nominal mass |
||
|
Length |
-0mm, +100mm |
-0mm + 8mm |
||