1. Blocker2. Material：High quality and low carbon steel3. Material Model: Q235B (S235JR / ASTM A283M) or Q345B (S355JR / ASTM A529M 1994) 4. Specification: 4320(3320-4320)*310*85*3(2.5-4.0) mm,Website:http://www.cnguardrail.com, available in different sizes5. Technique: cold rolled6. Finished: Hot dipped galvanized 7. Zinc coating thickness: 550-650 g/m2 (75-85µm)8. Other special specification as per client's requirement or drawings. 9. Certificate: ISO9001:200810. Standard: EN1317; AASHTO M180, Chinese standard11. Feature: Easy to clean. Strong plasticity .Oxidation resistance.\Guardrail block is used to connect the guardrail and post on the roadside.The shape of the block is determined the post. As the common the size of the guardrail post is the same with the block. It will be easily to connect with the same size. And it will be look good than the different size. The block can absorb the energy of the accident, so it can reduce the shock to the post.