热镀锌钢波纹涵管 宁夏省厂四川三米直径 金属钢波纹涵管

热镀锌钢波纹涵管simple sidewalks, moving soil in the empty mining area of coal mines, water destruction, and door hole repair.
Can be summer soil, no weather response, stop the current summer, the vast area of the southern part of the country weather, construction cover culverts or arch vouchers due to low temperatures, will form the same level of destruction, is the construction of the construction of short construction period, the environment is stubborn under the condition of poor. The use of steel corrugated culverts can be 
 宁夏省厂四川三米直径 金属钢波纹涵管