With the continuous development of China's social economy, the number and height of various buildings are increasing. High rise buildings and large buildings have become the mainstream direction of urban construction. At the same time, the increase of building height and the expansion of building scale also put forward higher requirements for the fire performance of buildings.

At present, the fire separation means in the building mainly adopts the combination of fire shutter, fire window and stainless steel fire glass door to realize the fire separation in the building. Among them, the number of stainless steel fireproof glass doors in construction engineering ranges from tens to thousands, accounting for the vast majority of fire separation products in the building. According to the analysis of fault tree principle, the failure of any stainless steel fireproof glass door can lead to the failure of fire separation in the building, Therefore, stainless steel fireproof glass doors, which account for the vast majority of them, must be the key link of fire separation in buildings. Therefore, in the process of acceptance, it is particularly important to ensure the project quality of building stainless steel fireproof glass door.

However, after adopting the new national standard gb12955-2008 stainless steel fireproof glass doors for stainless steel fireproof glass doors, the original ga588-2005 rules for on-site inspection and judgment of fire protection products can no longer meet the inspection requirements of new stainless steel fireproof glass doors. In addition, the professional level of construction engineering supervisors and fire supervisors in China is uneven, Not knowing much about stainless steel fire-proof glass door products leads to problems such as not knowing how to accept or passing through the field of acceptance and carelessness in the project acceptance of stainless steel fire-proof glass door project, which has buried many congenital fire hazards for construction projects. Therefore, In this paper, some problems often existing in the stainless steel fireproof glass door project and the key details that need to be inspected are summarized again as follows, so as to provide some reference opinions for the construction, procurement, supervision and acceptance personnel of fire engineering.

Main problems of stainless steel fireproof glass door products

1.1 market access and product identification

At present, the type certification system is implemented for stainless steel fireproof glass door products in China. The type approval certificate and corresponding product inspection report shall be obtained before the production and sales of stainless steel fireproof glass door products. The products that have not obtained the type approval certificate or exceed the scope of the type approval certificate are not allowed to be produced and sold.

However, at present, some enterprises in the market produce stainless steel fireproof glass doors without certificates or beyond the scope of certificates, and the product quality can not be guaranteed. Some stainless steel fireproof glass door products have no factory certificate and product nameplate, or the information on the product nameplate is incomplete and the material is inconsistent, which does not meet the market access requirements and national standards of stainless steel fireproof glass door products.

In order to maximize the benefits, some sales enterprises entrust illegal enterprises to produce stainless steel fireproof glass door products with trademarks. Without any formal source procedures, they sell at a low price, which completely violates China's laws and regulations, and their product quality can hardly meet the standard requirements.

1.2 structural design issues

The structural design of stainless steel fireproof glass door has a direct impact on the fire resistance and heat insulation performance of stainless steel fireproof glass door. During the application for certificate and type inspection of stainless steel fireproof glass door products of some enterprises, the number and size of openings of door leaf shall be reduced as much as possible, the thickness of door leaf shall be increased, and the opening area of fireproof glass of bright window on door leaf shall be reduced. However, at the project site, many products were transformed according to the needs of customers and aesthetic needs, opened cat eyes, changed the model and structure of fire locks, changed the type of fire-proof glass used for bright windows on the door leaf, cancelled the door closer and sequencer, and even changed the design structure of the door leaf, resulting in a serious reduction in the fire-proof performance of stainless steel fire-proof glass doors.

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