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I-guardrail ye-thrie beam
I-guardrail ngokuyinhloko ilandela i-AASHTO M180, GB-T 31439.1-2015 kanye ne-EN1317 standard.
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I-W-Beam Guardrail
Izinto zokwakha lokho ikakhulukazi yi-Q235B (S235Jr amandla okukhiqiza angaphezu kuka-235Mpa) kanye ne-Q345B (S355Jr amandla okukhiqiza angaphezu kuka-345Mpa).
