highway guardrail
1.standard:GB/T18226, AASHTO M180, etc
2.galvanized
3.powder coated
4.special shape and dimension
highway guardrail SIZE OF W-BEAM: 310x85x3(4)x4320mmSTANDARDS: GB/T18226, AASHTO M180, etc., or similar standards. According to buyer's request is...