1, is issued by the Ministry of construction, it can undertake various levels of fire system installation, such as: fire alarm system, sprinkler system, CO2 gas fire extinguishing system, etc.;
2, is the provincial construction department and fire department issued fire qualification, it can only install fire hydrant system.
消防设施工程 承包资质是由建设部颁发，属于建筑业企业施工资质中 承包的一个类别，获得消防设施工程 承包资质的企业，可以承接施工总承包企业分包的或者建设单位依法发包的消防设施工程。
Fire engineering contractor facilities qualification issued by the Ministry of construction, belongs to a type of professional qualification of construction enterprises in the construction contract, professional contracting fire facilities engineering quality enterprises, can undertake fire facilities engineering construction general contracting subcontracting enterprises or construction units to contract.
消防设施工程 承包企业资质划分为一级、二级、三级。 一级企业:可承担各类消防设施工程的施工。 二级企业：可承担建筑高度100米及以下、建筑面积5万平方米及以下的房屋建筑、易燃、可燃液体和可燃气体生产、储存装置等消防设施工程的施工。
The qualification of fire fighting facilities professional contracting enterprises is divided into grade one, grade two and grade three. First class enterprise: can undertake all kinds of fire fighting facilities engineering construction. Two grade enterprise: the construction of fire protection facilities such as building construction, flammable, combustible liquid and combustible gas production and storage facilities, which can bear the height of 100 meters and below the building area of 50 thousand square meters and below.
Three class enterprises: the construction of fire protection facilities for buildings with the construction height of 24 meters and below, building area of 25 thousand square meters and below.
(1) the nozzle should be outward, should not be installed on the shaft;
(2) pin port center distance ground was 1100mm. The allowable deviation of + 20mm;
(3) the fire hydrant box side center distance is 140mm, from the box inner surface is 100mm, the allowable deviation of + 5mm;
(4) the fire hydrant box to allow the installation of verticality deviation 3mm; installed with 6 x M10 galvanized expansion bolt, bolt should be evenly distributed;
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