Broken Bridge Aluminum Doors and Windows Heat Transfer Coefficient

Broken Bridge aluminum doors and windows the national standard for heat transfer coefficient is : K value is less than 3 .0

Whole window heat transfer coefficient/Profile Series/heat insulation strip type/material heat transfer coefficient/glass configuration/glass heat transfer coefficient
K=2 .8/55 series/14 .8mm/3 .25 + 12A +5/2 .63
K=2 .7/60 series/20mm/2 .65 + 15A +5/2 .54
K=2 .5/60 series/20mm/2 .65LOW-E +12+5/1 .7
K=2 .3/60 series/20mm/2 .65LOW-E + 15AR +5/1 .3
K=2 .0/65 series/25 .3mm/2 .45LOW-E + 15AR +5/1 .3
K=1 .8/65 series (filled foam)/25 .3mm/2 .0 5LOW-E + 15AR +5/1 .3
K=1 .3/72 (filled foaming)/35 .3mm/1 .86LOW-E + 16A + 5LOW-E +0 .15V +5/0 .6
K=1 .0/72 (filled foam)/35 .3mm/1 .86LOW-E +0 .15V +6 + 16A + 6LOW-E +0 .15V +6/0 .3

Broken Bridge aluminum door window technical requirements

(I) main performance requirements

1. The sound insulation performance of exterior windows meets the classification and testing method of sound insulation performance of exterior windows of buildings (GB/T8485-2002 level 3 standard 35dB>Rw>30dB
2. The thermal insulation performance of exterior windows meets the classification and testing method of thermal insulation performance of exterior windows of buildings (GB/T7 108-2002 secondary standard) 3 .0>k≥2 .5
3. The air leakage performance of exterior windows meets the requirements of "air leakage performance and detection methods of exterior windows of buildings" (GB7 107-2002 level 3 standard) 2 .5≥q ₁> 1 .5m ³/m . h
4. The rainwater permeability of exterior windows meets the classification and detection method of rainwater permeability of exterior windows of buildings (GB7 108-2002 level 3 standard) 250≤△p <350
5. Comply with other national standards and specifications.
   • , regulations on door and window materials

Window heat transfer coefficient must meet K≤2 .30 W/( m2·K), the bidder shall provide the calculation book of doors and windows and the report of "five experiments. All problems, responsibilities and expenses caused by the failure of the heat transfer coefficient of the whole window to meet the requirements are all the responsibility of the bidding unit (the winning bidder). Specified door and window configuration : profile not less than 55 series , the isotherm is required to be gentle. , temperature gradient uniform insulation strip selection of domestic brands , the thickness of hollow glass is 5mm +9mm +5mm.

I. Aluminum alloy profiles, glass and accessories

1. Aluminum alloy profile

1 .1. The selection of aluminum alloy profiles should meet the requirements of the following table :(Profile section size refers to the effective size of the projection of window frame material on the wall)

No.	Door and window type	Profile requirements	Profile Series	Profile wall thickness	Surface Treatment
1	Casement window	Broken Bridge insulation aluminum profile	No less than 55 series (Excluding open fan)	Window structure profile : ≥ 1 .4mm Door structure profile : ≥ 2 .0mm Other profiles : ≥ 1 .2mm	Electrostatic powder spraying : color pending
2	Hanging window
3	Sliding door

The wall thickness of the profile in the above table is the minimum requirement. , the wall thickness of the main profile should be determined by calculation or test. , the bidder shall provide the design calculation of typical doors and windows.

1 .2. Aluminum alloy doors and windows all adopt inner buckle , square buckle ,45 ° joint , smooth feel , no obvious errors , and make waterproof treatment , details as shown :

1 .3. The surface of aluminum alloy profile adopts electrostatic powder spraying , coating Thickness ≥ 40cm , outdoor spraying color is : indoor spraying color is : before formal processing , the successful bidder shall provide a color card confirmed by the tenderee. The bidder is responsible for requiring the powder spraying manufacturer to provide it to the tenderee. 10 annual Quality Assurance certificate , that is 10 there is no obvious change in color within the year. , the coating does not fall off.

1 .4. Take effective anti-leakage measures as needed. Such : all doors and windows lower frame indoor side wing edge has enough water retaining height (inner and outer height difference should be greater than 30mm) , vertical hinged door the lower frame of the window should have Rhone (hole) , and equipped with drain hole cover with the same or similar color as the profile.

1 .5. Window opening fan configuration invisible car window shade (rail aluminum alloy profile wall thickness not less than 1 .2mm) , adopt domestic quality brands.

2. Glass

2 .1. The thickness of the original glass sheet of doors and windows shall not be less than 5mm +9mm +5mm.

2 .2. Frosted glass is used for the outer glass of the kitchen and bathroom windows.

2 .3. Molecular sieve must be set for insulating glass seal , the sealing material is high quality butyl rubber and polysulfide adhesive.

2 .4. Whether the door and window glass needs tempering is determined by calculation , typical glass calculation book for doors and windows must be provided. , and in accordance with national, local and industry standards and norms , the self-explosion of tempered glass must be controlled at 3/ 10 within 00 , the glass must be edging and chamfering.

2 .5. Safety glass must be used in the following situations :

A. Glass area ≥ 1 .5 ㎡

B. Floor-to-ceiling windows, floor-to-ceiling windows with final decoration surface ≤ 900mm, inclined assembly windows and skylights

c. Comply with relevant regulations and specification requirements such as management regulations on building safety glass, technical regulations on application of building glass, GB11944-2002, etc.

2 .6. Glass anti-thermal cracking design should meet the following requirements : except for the north direction and the area of a single block is less than 2 .0 ㎡ outside the glass , should be in accordance with the relevant provisions in the current industry standard "technical regulations for application of architectural glass" (JGJ113-2003) , carry out the design calculation of building glass anti-thermal cracking. Provide necessary calculation books.

2 .7. The following measures should be taken for the structural design of glass anti-thermal cracking : there should be no crack-prone defects around all glass. For glass that is prone to hot cracking, chamfering and edge grinding should be carried out on the edge. Glass inlay shall be made of sealing gasket material with good elasticity.

3. Hardware

1 .1. The hardware accessories of aluminum alloy doors and windows are made of German Scarlett hardware accessories.

2 .2. Design and select hardware accessories according to the weight of doors and windows fan (the nominal bearing capacity should be greater than 1 of the actual load .5 times) , movable hardware should be able to meet Grade A products that have been used for more than 50000 times. , submit physical samples and manufacturer information during bidding.

2 .3. A flat open fan with a height greater than 1200mm (or an overhanging window with a width greater than 1200mm) must use a drive handle with no less than 3 locking points.

2 .4. Hardware accessories product catalogue and instructions must be provided.

2 .5. Aluminium windows switching force : casement window no more than 50N , sliding window fan is not more than 70N; Four corners of doors and windows must be stainless steel connecting piece Cornerite , see the picture below :

3. Steel auxiliary frame

3 .1. The steel auxiliary frame of this project adopts rectangular steel auxiliary frame , specification: 20mm × 40mm × 1 .5mm , anti-corrosion treatment inside and outside , steel frame end should be closed.

3 .2. Before processing the steel auxiliary frame, the successful bidder must measure the hole size on site. , and put forward rectification suggestions.

3 .3. Aluminum alloy door and window seals are constructed by aluminum alloy manufacturers.

3 .4. Connect the auxiliary frame with the wall with nylon expansion bolt , the connection must be glued;

3 .5. Fill foaming agent between aluminum alloy frame and sub-frame , if the foaming agent cannot be filled, water swelling strip is preset.

3 .6. The gap between the door and window frame and the hole decorative surface is sealed by neutral weather-proof silicone sealant , its width and height are greater than or equal to 5mm;

3 .7. Seal between glass and aluminum alloy frame , outdoor neutral weather-proof silicone sealant , indoor use domestic high quality white neutral sealant pieces;

3 .8. Sealant shall be applied to the joints between other components and aluminum alloy frame and shall not affect the appearance.

2. Confirmation of processing map

The bidder shall provide all processing drawings to the tenderee for review within 7 days after receiving the bid winning notice. , some nodes must be clearly mapped , such as the relationship between window and wall, the relationship between insulation and window, the relationship between face brick and window, etc.

1. Door and window design and performance indicators

1 .1. Door and window design

The bidder is responsible for the design of aluminum alloy doors and windows. , and provide design calculation books;

The bidder shall review all drawings (including details of doors and windows; Doors and windows table; Horizontal, vertical and profile relationship) , and have the obligation to put forward rectification opinions;

The bidder shall follow different opening forms , provide details of typical doors and windows , including installation node layout, node layout (including screws, hardware, etc.), section layout and profile model, etc.

1 .2. Door and window performance

The main performance of aluminum alloy doors and windows must meet the following requirements (Performance Inspection index of doors and windows) :

Door and window type Performance	Aluminum alloy doors and windows
Wind pressure resistance	≥ 3000Pa
Air tightness	q1 ≤ 1 .5 m3/m . h ( 10 pa); q2≤4 .5 m3/m . h ( 10 pa)
Water tightness	Impermeable pressure ≥ 250PA
Insulation Performance	External window heat transfer coefficient : K≤2 .3W/㎡·K .
Sound insulation performance	Rw≥30dB

III. Installation of doors and windows

1. Glue shall be used to stick the cover of fabrication holes during construction fabrication holes; Round head screws shall be used to connect the aluminum alloy frame with the steel auxiliary frame and sealant shall be applied.

2. The winning bidder must be before formal processing and production , disclosure of construction drawings organized by tenderee , and provide aluminum alloy doors and windows installation node details and construction scheme , the construction can only be carried out after being verified by the tenderee.

IV. Manufacture and installation of aluminum alloy doors and windows

1. The general contractor shall provide 50 lines, window center points, vertical control lines in each layer and gray cakes on the inner wall; And sign a handover order with the winning bidder.

2. After signing the delivery order, the winning bidder , complete steel auxiliary frame installation, Main Frame installation, suspending fan, glass installation, foam gluing and acceptance within the time agreed by the tenderee.

3. Hole size , the order confirmed by both parties at the construction site shall prevail. , if the civil opening is too poor , the general contractor is responsible for repairing.

4. The outer skin of the steel frame is reduced scale 15mm away from each side of the hole.

5. The construction sequence is that the successful bidder first installs the steel auxiliary frame. , after other processes.

6. All doors and windows are divided into grids , it must be confirmed by the tenderee and design before processing and manufacturing.

V. Others

1. On the premise of not affecting the project quality and design effect, the winning bidder can propose an optimization scheme. , but it must be approved by the tenderee;

2. The bidding unit shall provide sample windows when submitting the bidding documents. , the size is 600*900. The sample window of the winning bidder is sealed in the project manager department of the bidding party after being signed and confirmed by the bidding party, the winning bidder and the supervisor. , as the acceptance criteria for future supply. The tenderee has the right to adjust the content of sealing materials according to the actual situation. , and as the final acceptance standard.

3. The winning bidder shall, under the witness of the tenderee, extract not less than three groups of full scale doors and windows to the laboratory approved by the tenderee for the designated index inspection and issue a report. , inspection doors and windows are provided free of charge by the successful bidder. , the cost of testing shall be borne by the winning bidder;

4. After the goods arrive at the site, they can be installed only after they are accepted by the tenderee and the supervisor;

5. The tenderee requires all doors and windows to be carried out before the project acceptance. 100% water test. The water fee shall be borne by the winning bidder.

6. Finished product protection : the supplier shall propose clear protection measures for finished products. , clear in bid documents , the fee is included in the quotation.

7. The winning bidder is responsible for the handover cleaning , until it meets the requirements of the tenderee , relevant hydropower expenses shall be borne by the winning bidder.

8. Project warranty according to National Unified warranty standards , the warranty period is 2 years.

• • Acceptance criteria : implement the current national acceptance standards (GB/T8478-2008);