traffic safety sign post
Steel Grade: Q235B steel
Surface Treatment: Galvanized, Galvanization is based on ASTM A653 G90 (Zinc 275g/M2)
Wall Thickness: GAUGE 12
Hole: 7/16" diameter holes on 1" centers, full-length and 4 sides punched, 1/2" from one edge of square tube to the first hole center.
Outdoor galvanized perforated steel square road traffic safety sign post
Steel perforated sign posts Specifications
| material standard | ASTM A1011, Grade50 |
| yield strength | 60,000Psi minimum- 80000Psi |
| surface treatment | hot dipped galvanized or powder coated |
| holes | 7/16" holes on 1" centres on all four sides down the entire length of the post |
| cross section | 1 1/2", 1 3/4", 2" ,2 1/4", 2 1/2" |
| thickness | 12 gauge or 14 gauge |
| length | all kings of length according to your demand |
| feature | provide superior resistance to wind and other forces |
MATERIAL
Tubing with plain finish is rolled from 12 gauge (0,105 U.S.S. Gauge) and 14 gauge (0,075 U.S.S. Gauge) hot rolled steel, Q235b. Galvanized finish, average minimum yield strength after cold forming is 60 000 psi.
GALVANIZATION
Galvanization shall conform to specification ASTM A653 G90 (275g/m²). Corner weld is zinc coated after scarfing operation.
TOLERANCES
Wall thickness tolerance:
Permissible variation in wall thickness is + 0,011, -0,005 inches.
Tolerance on size: Nominal outside dimension (inches) | Outside tolerance for all sides at corners (inches) |
1¾" x 1¾" | ± 0,008 |
2" x 2" | ± 0,008 |
2¼" x 2¼" | ± 0,010 |
2½" x 2½" | ± 0,01 |
Squareness of sides and twists: Nominal outside dimension (inches) | Squareness tolerance (inch*) | Twist permissible in 3 feet (inch**) |
1¾" x 1¾" | ± 0,010 | 0.062 |
2" x 2" | ± 0,012 | 0.062 |
2¼" x 2¼" | ± 0,014 | 0.062 |
2½" x 2½" | ± 0,015 | 0.075 |
* Tubing may have its sides failing to be 90° to each other by tolerance listed.
**Twist is measured by holding down the edge of one end of a square tube on a surface plate with the bottom side of the tube parallel to the surface plate and noting height that either corner on the opposite end of the bottom side is above the surface plate.
Convexity and concavity: Measured in the center of the flat side, tolerance is ±0,010 inch applied to the specific size determined at the corner.
Straightness tolerance:Permissible variation in straightness is 1/16" in 3 feet.
Telescoping: Using 12 gauge or 14 gauge square tube, consecutive size tubes shall be cleaned of galvanization burrs and shall telescope freely for ten feet.
Hole tolerance: Tolerance on hole size is ±1/64" on a 7/16" hole size. Tolerance on hole spacing is ± 1/8" in ten feet.
Packaging: standard seaworthy packing, bundle, container, etc
