GB/T 8814-2017Unplasticized polyvinyl chloride(PVC-U)profiles for the doors and windows (English PDF)

3.1 Profiles

Profiles refer to products that are extruded and have a specific cross-sectional shape.

3.3 Homogenous profiles

Homogenous profiles refer to profiles whose overall materials are consistent.

3.4 Profiles laminated with foil

Profiles laminated with foil refer to profiles that are decorated with foil, which changes the surface properties.

3.10 Decorative surface

Decorative surface refers to the surface of the profiles that has been laminated with foil, co-extruded and painted.

3.11 Special decorative surface

Special decorative surface refers to a decoration consisting of non-single colors and non-flat surfaces, etc.

3.12 Decorative profiles

Decorative profiles refer to profiles with a decorative surface.

3.13 Base profiles

Base profiles refer to the main body of the profiles except the decorative surface.

3.14 Depth of a profile

Depth of a profile refers to the maximum distance measured between two sight surfaces on the cross-section of the profiles along the X-axis direction, as shown in Figure 1.

5.1 Classification

5.1.1 Color and process

In accordance with color and process, the profiles are classified into homogenous profiles and decorative profiles.

5.1.2 Wall thickness of main profiles

The wall thickness of the main profiles is shown in Figure 1, and the classification is shown in Table 2.

5.2 Rating

5.2.1 Drop weight impact of main profiles

The rating of the main profiles by drop weight impact is shown in Table 3.

5.2.3 Thermal insulation properties

The rating of the main profiles by thermal insulation properties is shown in Table 5.

5.3 Labeling and Examples of Main Profiles

5.3.1 Labeling

The main profiles are labeled as follows. […]

6.1 Appearance

The color of the sight surface of the profiles shall be consistent, and the surface shall be smooth and flat, without obvious unevenness or impurities. The ends of the profiles shall be clean and free of burrs.

6.2 Dimensions and Deviations

6.2.1 Appearance and Functional Structural Dimensions

The deviations of the overall dimensions shall comply with the stipulations of Table 7.

6.2.2 Wall thickness of main profiles

The minimum wall thickness of the main profiles shall comply with the stipulations of Table 2.

6.2.3 Thickness of decorative surface

6.2.3.1 Laminated foil

The thickness of the laminated foil of FM profiles shall be not less than 0.160 mm.

6.3 Straight-line deviation

The straight-line deviation of the main profiles with a length of 1 m shall be not greater than 1 mm, and the straight-line deviation of the auxiliary profiles with a length of 1 m shall be not greater than 3 mm.

6.4 Mass of Main Profiles

The mass of the main profiles per meter of length shall be not less than 95% of the nominal mass.

6.5 Dimensional Change Rate after Heating

The dimensional change rate after heating of the two largest opposite sight surfaces of the main profiles shall be not greater than 2.0%; the difference in the dimensional change rate after heating of the two sight surfaces of each specimen shall be not greater than 0.4%.

The dimensional change rate after heating of the auxiliary profiles shall be not greater than 3.0%.

6.7 Drop Weight Impact

6.7.1 Drop weight impact of main profiles

When impacting the sight surface of homogenous profiles and the non-decorative sight surface of decorative profiles, the number of specimens with a cracked sight surface shall not exceed 1.

6.7.2 Drop weight impact of decorative surface

When impacting the decorative sight surface of decorative profiles, no matter whether the decorative surface is cracked or not, there shall be no separation between the decorative layer and the base profiles.

6.8 Density

The density of the base profiles shall be not greater than 1,530 kg/m³.

6.9 Vicat Softening Temperature

The Vicat Softening Temperature (VST) of the base profiles shall be not less than 78 °C.

6.10 Tensile Yield Stress and Tensile Fracture Strain

The tensile yield stress of the base profiles shall be not less than 37 MPa, and the tensile fracture strain shall be not less than 100%.

6.11 Bending Elastic Modulus

The bending elastic modulus of the base profiles shall be not less than 2,200 MPa.

6.12 Peel Strength of Laminated Foil and Base Profiles of FM Profiles

The peel strength of the laminated foil and base profiles shall be not less than 2.5 N/mm.

6.13 Hardness of Coating Layer of TZ Profiles and Adhesion to Base Profiles

The pencil hardness of the coating layer shall be not less than Grade H.

The adhesion of the coating layer to the base profiles shall satisfy the requirements of Level-0 of the cross-cut method.

6.14 Environmental Stress Cracking Resistance of GJ Profiles

There shall be no cracks on the co-extruded surface, and no delamination or peeling between the co-extruded layer and the base profiles.

6.15 Ageing

6.16 Weldability of Main Profiles

6.16.1 Compressive bending stress of weld fillet

The average compressive bending stress of the weld fillet shall be not less than 35 MPa, and the minimum compressive bending stress shall be not less than 30 MPa.

6.17 Heat Transfer Coefficient of Main Profiles

The heat transfer coefficient of the main profiles shall comply with the requirements of Table 5.

6.18 Limit of Harmful Substances

The limit of harmful substances of the profiles shall comply with the requirements of GB/T 33284.

7.2 Appearance

Under natural light or an equivalent artificial light source, perform visual inspection, with a visual inspection distance of 0.5 m.

7.3 Dimensions and Deviations

7.4 Straight-line Deviation

From three profiles, respectively cut out a specimen with a length of (1,000100) mm. Place the concave side of the specimen downward on a standard platform of Level-3 or above.

7.5 Mass of Main Profiles

From three profiles, respectively cut out a specimen with a length of 200 mm ~ 300 mm; the end face of the specimens shall be perpendicular to the longitudinal axis of the profiles.

7.6 Dimensional Change Rate after Heating

7.7 State after Heating

7.8 Drop Weight Impact

7.8.1 Drop weight impact of main profiles

7.8.1.1 Specimen preparation

From three profiles, cut out a total of 10 specimens with a length of (300 ± 5) mm.

7.8.1.2 Test equipment

7.8.1.4 Test procedures

Place the specimen on the support frame (see Figure 3) with the surface to be impacted facing upward. Impact the center of the specimen between the two supports and for each specimen, impact once. The drop weight height is 1,000100 mm for Level-I, and 1,500100 mm for Level- II and Level-III. In addition, it shall comply with the following requirements. […]

7.9 Density

In accordance with Method A in GB/T 1033.1-2008, carry out the test. The specimens shall be taken from the base profiles of the profiles.

7.10 Vicat Softening Temperature

In accordance with Method B50 in GB/T 1633-2000, carry out the test. The specimens shall be taken from the base profiles of the sight surface of the main profiles.

7.11 Tensile Yield Stress and Tensile Fracture Strain

In accordance with the stipulations of GB/T 1040.2-2006, carry out the test. The specimens shall be taken from the base profiles of the profiles. The type of specimens is 1B, and the test rate is 10 mm/min.

7.19 Limit of Harmful Substances

In accordance with the stipulations of GB/T 33284, carry out the test.

8.1 Classification of Inspection

8.1.1 Exit-factory inspection

Exit-factory inspection shall be carried out in the unit of batch. The inspection items are 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.13, 6.14, 6.16.1.

8.1.2 Type inspection

The type inspection items are all the contents required in this Standards. In addition to ageing, heat transfer coefficient of main profiles and limit of harmful substances, the inspection is generally conducted once a year.

8.2 Group Batch and Sampling

8.2.1 Group batch

Products with the same raw materials, processes, formulas and the same cross-sectional geometric structural characteristics are considered as one batch. The output of each batch shall not exceed 50 t.

8.3 Determination Rules

8.3.1 Determination of qualified items

8.3.1.1 Determination of appearance and dimensions

The test results of appearance and dimensions shall be determined in accordance with Table 10.

8.3.1.2 Determination of other items

If the test results of ageing, heat transfer coefficient of main profiles and limit of harmful substances are disqualified, then, the product shall be determined as disqualified.

9.1 Marking

9.1.1 Protective film of sight surface

The sight surface of the main profiles shall be covered with a protective film. The protective film shall have at least serial No. of this Standard, manufacturer's name, production address and telephone number, etc.

9.2 Identification or Label of Main Profiles

The main profiles shall have at least one set of permanent identification on the non-sight surface along the length direction of the profiles at an interval of 1 m, which shall include the labeling specified in 5.3. […]