This part of GB/T 31439 specifies the classification, technical requirements, test methods, inspection rules and marking, packaging, transport and storage of w-beam guardrail products.This part is applicable to the w-beam guardrails used for highway and urban roads but may be referred to by those in other places.
定价: 780元 / 折扣价: 663 元 加购物车
This part of GB/T 31439 specifies the classification, technical requirements, test methods, inspection rules and marking, packaging, transport and storage of thrie-beam guardrail products.
This part is applicable to the thrie-beam guardrails used for highways and urban roads but may be referred to by those in other places.
定价: 780元 / 折扣价: 663 元 加购物车