Thick-walled straight seam steel pipe plays an important role in people's way of life and some things, but maintenance and maintenance has always been a headache. Let's see what maintenance and maintenance of thick walled straight seam steel pipe need to pay attention to! First, choose the right s

Data show that as of November 16, the price of HRB40020mm rebar in Shanghai increased by 200 yuan to 4130 yuan/ton from the previous week, an increase of 5.1%; the main rebar futures contract rose by 70 yuan to 3852 yuan/ton, an increase of 1.9%, based on The gap widened substantially. The apparent