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国内的交通运输领域的载重挂车通常都为钢铁所造。我们平时在道路上常见的载重车或半挂车基本也是钢铁材料制成,因其重量大、能耗高常被称为交通运输业的“油老虎”。早在30年
Domestic heavy-duty trailers in the transport sector are usually made of steel. We usually usually on the road truck or semi-trailer is basically made of steel, because of its weight, high energy consumption is often referred to as the transportation industry “oil tiger ”. As early as 30 years