details made by tianchuang, one of the most reliable Steel Guards Manufacturers, GB JT / t Highway Guards (or Hot Dip Galvanized Green Guards) worth purchase.
Standard: GB JT / t281 - 2007, aashto m180
Material: Hot Rolled Steel Roll, Q235 or Q345 grade
Standard Size: 4320mm * 310mm * 85mm * 3mm / 4mm
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