Construction sequence of cave entrance:Excavation of soil and rock at the entrance of the tunnel → setting up a circular intercepting ditch → trimming the section and slope..
Zhitai steel fiber is a steel fiber manufacturing company which is located in Tangshan city,a steel production base. Zhitai Steel Fiber after more than 10 years of development, has become an annual sales production of 20,000 tons of manufacturers. Each year 500,000m3 of concrete is reinforced with Zhitai® Steel fibers.
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