The steel bar is between 3000 and 3900. The price difference between domestic standard and non-standard steel bars is very large. Usually, steel bars from big manufacturers are of better quality and the price is higher. It is recommended that when purchasing steel bars, you find a competent person to accompany you. There are many scammers in the steel market, either you buy steel bars from small factories at high prices, or you are defrauded by "shills".
Sand costs 70-80/ton, cement costs 350/ton, but the main reason is that the larger the quantity, the cheaper
Rebar ( rebar) produced by Shuigang. Everything has metal signs indicating the manufacturer, steel grade, lot number, specifications and inspection code. You can also get a quality guarantee certificate lwhen you buy it. You can distinguish it with the naked eye. 1) In terms of appearance and size. , you can use a vernier card measuring tool to simply measure whether the actual size is larger than the nominal size (general thread There are specification marks on rolled steel) which are about 1 specification or more. Observed from the end face of the steel bar, it is flattened oval, while the end face of ordinary steel bar should be essentially round. 2) From the perspective of surface quality, because fake and low-grade steel often has defects such as scars, it has an overall rough feeling, and the surface color is reddish. Third, ordinary steel products are often packaged in large packages when they leave the factory. This does not mean that other steel mills have problems and are not as good as Shuigang. I think why Zhenfeng likes Shuigang, secondly because of the good quality, and the most important reason is that it is close to Shuigang (Liupanshui), which saves high shipping cost. Since there is no such high freight, the price of Shuigang in the local market is significantly lower than that of famous brand steel from other provinces.
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This answer is professionally certified by Lu Hong, an expert in healthy lifestyle classification