... -RG620, SPS98S or any other International Standards 4. Base steel: Steel Grade Q235B (equivalent to S235JR according to DIN EN 10025 ... D according to ASTM A283M) 5. The thickness of the steel: 3mm, 4mm, 6mm or according to consumers request 6. ... 8. Certificate: ISO9001: 2001 Highway Guardrail Accessories (Road Barrier Accessories): 1. POST: C Post, Circular Post, I Post, Z Post, etc. 2. Spacer. 3. ...