1
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Grade II general contracting of construction engineering construction can undertake the following construction projects: (1) industrial and civil construction projects with height less than 100 meters; (2) structure projects with height less than 120 meters; (3) construction projects with building area less than 150000 square meters; (4) construction projects with single span less than 39 meters
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2
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Grade II professional contractor of building decoration engineering can undertake the construction of indoor and outdoor decoration engineering (except building curtain wall engineering) with unit project cost less than 12 million yuan
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3
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The third level of general contracting for municipal public works construction can undertake the construction of the following municipal public works whose single contract amount does not exceed 5 times of the registered capital of the enterprise: (1) urban road engineering (excluding Expressway), bridge engineering with single span less than 20 meters; public square engineering; (2) water supply plant with a capacity of 20000 tons / day and below; sewage treatment engineering with a capacity of 10000 tons / day and below; 5 m3 / s and Rainwater pumping station with a diameter of less than 1 m; water supply pipeline with a diameter of less than 1.5 m; sewage pipeline with a diameter of less than 1.5 m; (3) liquefied gas storage and irrigation station with a total storage volume of 500 m3 or less; gas supply project with a gas supply scale of 50000 m3 / day; medium and low pressure gas pipeline and pressure regulating station with a diameter of 2 kg / cm2 or less; thermal engineering with a heating area of 500000 m2 or less; thermal pipe with a diameter of less than 0.2 M (4) domestic waste transfer station 4
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Grade III professional contracting of steel structure engineering can undertake steel structure engineering (including light steel structure engineering) with single contract amount not exceeding 5 times of registered capital, span of 24m and below, total weight of 600t and below, single building area of 6000m2 and below, side length of 24m and below, total weight of 120t and below, and building area of 1200m2 And below the grid project production and installation
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5
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The third level of environmental protection engineering professional contracting can undertake the construction of pollution remediation engineering, domestic waste treatment and disposal engineering, and other small environmental protection engineering
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6
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Construction labor can undertake all kinds of construction labor operations regardless of grade
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(source: General Department of Tianjin Haobo Construction Group).
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