6.
Grade III General Contracting of municipal public works construction It can undertake the construction of the following municipal public works with a single contract amount not exceeding 5 times the registered capital of the enterprise: (1) Urban Road Engineering (excluding Expressway), bridge engineering with single span less than 20m; Public square works; (2) Water supply plants of 20000 tons / day and below; Sewage treatment works of 10000 tons / day and below; Rainwater pump station of 5 m3 / s and below; Water supply pipeline with diameter less than 1m; Sewage pipeline with diameter less than 1.5m; (3) Liquefied gas storage and irrigation yard (station) with total storage volume of 500 m3 and below; Gas supply scale: 50000 m3 / D gas project; Medium and low pressure gas pipelines and pressure regulating stations of 2kg / cm2 and below; Thermal engineering with heating area of 500000 square meters and below; Thermal pipeline with diameter less than 0.2m; (4) Domestic waste transfer station 4.
Construction labor can undertake various construction labor operations regardless of grade.
The third level of professional contracting of environmental protection engineering can undertake the construction of pollution remediation engineering, domestic waste treatment and disposal engineering, below medium-sized and other small environmental protection projects.
5.
Grade III professional contracting of steel structure engineering can undertake steel structure engineering (including light steel structure engineering) with a span of 24m and below, a total weight of 600t and below, a single building area of 6000m2 and below, and a side length of 24m and below, a total weight of 120t and below Fabrication and installation of Grid Engineering with a construction area of 1200 square meters and below.
2.
Cuplock Scaffolding Components
Grade II professional contracting of Building Decoration Engineering It can undertake the construction of indoor and outdoor decoration works (except building curtain wall works) of buildings with unit project cost less than 12 million yuan.
1.
(source: General Department of Tianjin Haobo Construction Group)..
Grade II general contracting of Construction Engineering It can undertake the construction of the following construction projects: (1) industrial and civil construction projects with a height of less than 100m; (2) Structures with a height of less than 120m; (3) Construction projects with a construction area of less than 150000 square meters; (4) Construction works with a single span of less than 39 meters.
3.
