Plastic steel doors and windows product quality inspection standards
The quality inspection requirements for the group fan workshop are as follows:
First, verify that the glass dimensions in the design drawings are accurate. Ensure the glass is cut without any errors, and the cutting loss should not exceed 5% of the total glass area.
When producing hollow glass, the desiccant must reach at least 95% of the aluminum tube length. The sealing glue should be smooth, seamless, and free from air leaks. There should be no impurities inside the glass, and the surface should be scratch-free.
The middle aluminum strip in the fan glass and the central aluminum strip in the clear glass must be aligned straight. The joints should be tightly sealed, and the hollow sealant should be applied to the joint areas.
During the grouping process, first place the glass block around the fan, then add more than three anti-vibration blocks. Insert the cut glass into the frame and secure it with a glass bead to ensure stability and prevent vibration.
The selected strips must be flat and straight, with no gaps or deformations. This ensures proper alignment and structural integrity.
After the group fan is completed, a quality inspector will conduct a sample check and affix a certificate before the product leaves the factory.
If any provisions are not specified, they should be followed according to the construction industry standards of the People’s Republic of China.
Any violations of these rules will result in responsibility being assigned to the respective parties.
The quality inspection requirements for the blanking workshop include checking the frame, fan, sliver, cover, and strip sizes as per the drawings. Ensure the number of strips is correct and the material is verified before proceeding with the pressing process.
The blanking size error must not exceed 0.5mm. Each reinforced steel bar used for fixing must have at least three solid parts, spaced no more than 300mm apart, and positioned no more than 100mm from the end. The reinforced steel must be firmly fixed and rust-proofed on the surface.
The milling drain hole should have a diameter of 5mm and a depth of 20mm. It must be placed within the cavity containing the reinforced steel, without piercing through the cavity.
For 80 double beads and 60 double beads, the cut angle must be precisely 45 degrees to ensure proper fit and alignment.
If the frame height is less than 1200mm and the fan height is less than 700mm, no additional profile steel is required, and the installation should follow the specified guidelines.
The position of the fixtures must be aligned with the drawing specifications to maintain consistency and accuracy.
If any details are not covered, they should be implemented according to the construction industry standards of the People’s Republic of China.
Any violation of these regulations will be the responsibility of the involved party.
The quality inspection requirements for the installation team include checking the size of the plastic window opening and placing the corresponding window frames in the correct location.
When installing the window frame, the upper and lower frame lines should align with the centerline of the opening. The four corners of the upper and lower frames and the middle horizontal frame should be temporarily fixed using small wedges or blocks, ensuring the wooden wedges are parallel to the frame. Then, the frame is securely fastened to the wall using nails or expansion screws.
Adjust the verticality, levelness, and straightness of the window, frame, and fan to ensure proper alignment and functionality.
The glass should not come into direct contact with the glass groove. Anti-vibration blocks of different thicknesses should be placed on all four sides of the glass, and the glass should be clamped securely using a glass bead.
All hardware accessories must be correctly positioned, complete in quantity, and securely fastened for safety and durability.
If any details are not specified, they should be implemented according to the construction industry standards of the People’s Republic of China.
Any violation of these rules will be the responsibility of the relevant party.
The quality inspection requirements for the welding shop include verifying that the frame and fan dimensions match the drawings. The frame and fan should be perfectly vertical. If the frame or fan is warped, the steel lining should not be welded unless the dimensions meet the required standards.
According to the drawings, after welding, the frame and fan dimensions, including diagonals, must not deviate by more than 3mm. The finished product should be clearly marked with its specifications and model. Any deviation will prevent it from entering the warehouse, and the welding shop will be held responsible for any resulting issues.
The top pieces should not be too long or too short. They must be adjusted according to the fan length, and the pulleys and pads should be properly secured.
The cut corners must achieve a clean, precise appearance, following the groove and rule standards.
For group frames, at least three screws should be used for frames below 1500mm, and four screws for frames with a central section. The pressure for 60 double beads should be standard. The 60 double beads must not be replaced if they are too short or too long.
After welding, a quality inspector will conduct a sampling inspection to ensure compliance with all standards.
If any details are not covered, they should be implemented according to the construction industry standards of the People’s Republic of China.
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