What is the profit of 20 million curtain walls?

Extended content:

(1) Classification of glass curtain walls

Glass curtain walls are generally divided into open frame glass curtain walls, hidden frame glass curtain walls, semi-hidden frame glass curtain walls, point glass curtain walls and full-wave glass curtain walls. Keels are roughly divided into steel keels and aluminum keels.

(2) The cost composition of glass curtain wall

The comprehensive unit price of ordinary glass curtain wall is about 700~ 1000 yuan /m2, and the unit price rises and falls greatly according to the type and thickness of glass and curtain wall series. For example, for the exterior decoration project of Sanshui Pedestrian Street in Foshan, the comprehensive unit price of transparent and heat reflective coated glass curtain wall with aluminum keel TP8mm is 809 yuan/m2; Comprehensive unit price of aluminum keel lining with 3mm thick perforated aluminum veneer +TP8mm medium-heat-permeable reflective coated glass curtain wall 1084 yuan /m2. Comprehensive unit price of TP 19mm thick ultra-white glass curtain wall for Foshan Sanshui commercial exterior decoration project: 955 yuan/m2; The comprehensive unit price of single and two-color TP8(LOW-E)+ 12A+TP8 concealed frame hollow glass curtain wall: 823 yuan/m2; Irregular TP10+1.52pvb+TP10mm thick laminated glass curtain wall: 19 17 yuan/m2;

General glass curtain wall cost composition, such as Foshan Sanshui pedestrian street exterior decoration project: glass accounts for about10%; Profile accounts for about 39%; Production and installation account for about 21%; Materials such as hardware and engineering glue account for about 10%, and management, profit, expenses and taxes account for about 20%. The exterior wall decoration project of Sanshui Pedestrian Street in Foshan adopts single-layer coated glass, such as insulating glass, ultra-white glass and tempered glass. The cost proportion of glass will also change. (3) Cost analysis of glass main material

The main material of glass is influenced by brand, variety, specification and other factors, so as to improve the utilization rate of original glass as much as possible. Conventional glass specifications are: 2440*3300, 2440*3660, 2 100*3300, 2 100*3660.

Glass classification:

1. Tempered glass

Tempered glass is broken into small particles, which belongs to safety glass, but it may self-explode (the self-explosion rate is 3‰). In order to reduce the self-explosion rate of tempered glass, it is generally necessary to homogenize it (the tempered glass is heated to 290 10℃ and kept for a certain period of time, so that the nickel sulfide in the tempered glass can be transformed into crystal phase, and the tempered glass that may self-explode after use can be artificially crushed in the factory in advance, thus reducing delivery.

2.semi-toughened glass

Semi-tempered glass is broken into radial shape, which is not safety glass, and its strength is not as good as tempered glass, but it will not explode basically. Generally used with laminated glass, not alone. Semi-tempered glass with the same thickness is more expensive than tempered glass 12 yuan /m2 or so.

3. Laminated glass

Laminated glass is a kind of high-grade safety glass, which is made of two or more sheets of glass sandwiched with bonding material (PVB or EVA) or SGP (ionic interlayer). When the glass is damaged by external force, the glass fragments will not splash and remain intact.