Factory inspection should be carried out within the validity period after passing the type inspection, otherwise the inspection results will be invalid.

(1) The factory inspection items are shown in Table 2-26 and shall be tested according to the methods specified in this standard. Unqualified products are not allowed to leave the factory.

(2) Sampling method

Before the products leave the factory, random sampling should be carried out according to each batch, variety and specification, and the sampling quantity should not be less than 3 bottles.

(3) Products leaving the factory should have inspection certificates.

Table 2-26 Factory Inspection Items

Item Format Inspection Factory Inspection

Case Hing Window Sliding Window Casement Window Sliding Window

Wind pressure resistance√ √ —

Air penetration√ √ —

Rainwater leakage√ √ — —

Thermal insulation√ √ — —

Sound insulation√ √ — —

Angular strength√ √ √ √

Reinforced steel√ √ √ √

Hardware installation√ √ √ √

Lock (handle) switch √ — √ —

Window room opening and closing force √ √ √ √

Suspended end lifting weight √ — — —

Warping√ — — —

Switch fatigue√ √ √ —

Vigorous closing√ — — —

Window support test√ — — —

Distortion - √ - - Width size√ √ — —

Diagonal size√ √ √ √

Window frame and window sash frame adjacent components √ √ √ √

Adjacent Same flatness of components √ √ √ √

Fitting gap c between window frame and window sash √ — √ —

Overlap amount b of window frame and window sash b √ √ √ √

Appearance√ √ √ √

√ √

Note: ① Factory inspection: Check the welding seam for cracking before leaving the factory and the original record of profile angular strength or profile factory quality warranty.

② Sliding windows without handles are not subject to twisting tests.

In the table, “√” indicates items that need to be tested.

(4) Product factory inspection and determination rules

Inspect the performance of plastic windows according to the factory inspection items specified in Table 2-26. When one of the items fails, sampling should be doubled. Re-inspect the unqualified items. If the items are still unqualified, the batch of products will be judged to be unqualified. After inspection, if all test items meet the qualification indicators specified in this standard, the batch of products will be judged to be qualified.

Note: If necessary, factory inspection can also be carried out based on the technical requirements agreed by the parties concerned.

(5) The building physical properties of plastic windows (wind pressure resistance, air infiltration, rainwater leakage, thermal insulation, sound insulation properties) and mechanical properties of the lock, the opening and closing force of the sash, and the suspension end Lifting weight, warping, switch fatigue, strong closing, window support test, angular strength, bending, twisting, diagonal deformation, etc. shall comply with the requirements in the order contract. If requirements are made in the middle paragraph of the order contract, the physical and mechanical properties of the building should not be lower than the qualified indicators specified in this standard. (1) Type inspection should be carried out when one of the following situations occurs;

a. Trial type identification of new products or old products transferred to the factory for production;

b. After formal production, when When there are major changes in the structure, materials, and processes that may affect product performance;

c. During normal production, testing will be performed every two years;

d. After the product has been discontinued for a long time, it will be During production;

e. When the factory inspection results are significantly different from the last type inspection;

f. When the national quality supervision agency proposes type inspection requirements.

(1) The type inspection items are shown in 2-27, and they are tested according to the main method specified in this standard.

(2) Sampling method: During mass production, 3 samples of qualified products will be randomly selected for type inspection every two years.

(3) Type inspection judgment rules

Inspect the performance of plastic windows according to the type inspection items specified in Table 2-26.

When one of the items fails, sampling should be doubled. Re-inspect the unqualified items. If the items are still unqualified, the batch of products will be judged to be unqualified. After inspection, if all inspection items meet the qualification indicators specified in this standard, the batch of products will be judged to be qualified. When a dispute arises between the supply and demand parties over product quality, a statutory testing agency shall conduct arbitration inspection in accordance with this standard.

Logo, packaging, transportation, storage

1. Logo

(1) The product logo should be marked on an obvious part of the product. The logo content includes:

a. Manufacturer’s name or trademark;

b. Product name;

c. Product model and standard number;

d , manufacturing date or serial number.

2. Packaging

(1) Protective films should be added to the indoor and outdoor surfaces of the product.

(2) Products should be packaged with non-corrosive soft materials.

(3) The packaging should be firm and reliable, and have moisture-proof measures.

(4) After each batch of products is packaged, a product list and product inspection certificate should be attached.

3. Transportation

(1) The means of transportation for shipping products should be rainproof and kept clean.

(2) During transportation, loading and unloading, it should be ensured that the product is not deformed, not damaged, and the surface is intact.