GB/T 9775-2025 PDF English
US$380.00 · In stock · Download in 9 secondsGB/T 9775-2025: Gypsum plasterboard Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 9775: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 9775-2025 | English | 380 |
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Gypsum plasterboard
| Valid |
| GB/T 9775-2008 | English | 125 |
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Gypsum plasterboard
| Valid |
| GB/T 9775-1999 | English | 145 |
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Gypsum plasterboard
| Obsolete |
| GB/T 9775-1988 | English | RFQ |
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General gypsum plaster board
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 9775-2025
GB/T 9775-2025: Gypsum plasterboard---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT9775-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.10
CCS Q 62
Replacing GB/T 9775-2008
Gypsum plasterboard
Issued on: JUNE 30, 2025
Implemented on: JANUARY 01, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 Classification and labeling... 7
5 Raw materials... 8
6 Requirements... 8
7 Test methods... 10
8 Inspection rules... 23
9 Marks, packaging, transportation and storage... 24
Gypsum plasterboard
1 Scope
This document specifies the classification and marking, raw materials, requirements,
test methods, inspection rules, as well as marks, packaging, transportation and storage
for gypsum plasterboard.
This document applies to gypsum plasterboards used as non-load-bearing interior walls
and ceilings in buildings. It also applies to gypsum plasterboards used as substrates for
secondary processed products.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 9776, Calcined gypsum
GB/T 26204, Plaster liner board
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T 9776 as
well as the followings apply.
3.1 edge
Paper covered longitudinal edges.
3.2 end
Cutting edge with vertical edges.
3.3 face
The board surface without overlapping of the face paper.
3.4 back
The board surface with overlapping of the face paper.
4 Classification and labeling
4.1 Classification
4.1.1 Product type and code
Products are divided into the following categories according to their functions. normal
gypsum plasterboard (code as P), water-resistant gypsum plasterboard (code as S),
moisture-resistant gypsum plasterboard (code as T), fire-resistant gypsum plasterboard
(code as H), water-resistant and fire-resistant gypsum plasterboard (code as SH), and
moisture-resistant and fire-resistant gypsum plasterboard (code as TH).
4.1.2 Edge shape and code
According to the edge shape, it can be divided into four types. rectangle (code as J),
chamfered (code as D), wedge (code as C) and round (code as Y) (see Figure 1 ~ Figure
4). Products with other edge shapes can also be produced according to user
requirements.
4.1.3 Specifications and dimensions
4.1.3.1 The nominal lengths are 1500 mm, 1800 mm, 2100 mm, 2400 mm, 2440 mm,
2700 mm, 3000 mm, 3300 mm, 3600 mm and 3660 mm.
4.1.3.2 The nominal widths are 600 mm, 900 mm, 1200 mm and 1220 mm.
4.1.3.3 The nominal thicknesses are 9.5 mm, 12.0 mm, 15.0 mm, 18.0 mm, 21.0 mm
and 25.0 mm.
4.2 Marking
Mark by product name, type code, edge shape code, length, width, thickness and this
document number.
Example 1.A normal gypsum plasterboard with a length of 3000 mm, a width of 1200
mm, a thickness of 12.0 mm and a wedge-shaped edge shape is marked as.
Normal gypsum plasterboard PC 3000×1 200×12.0 GB/T 9775-2025.
Example 2.A water-resistant and fire-resistant gypsum plasterboard with a length of
3000 mm, a width of 1200 mm, a thickness of 12.0 mm and a wedge-shaped edge is
marked as.
Normal gypsum plasterboard SHC 3000×1200×12.0 GB/T 9775-2025.
5 Raw materials
5.1 Calcined gypsum should comply with the requirements of GB/T 9776.
5.2 The face paper should comply with the requirements of GB/T 26204.
6 Requirements
6.1 Appearance quality
The board surface should be flat and free of any defects such as ripples, grooves,
missing material, leaks, scratches, damage, or stains that may affect its use.
6.2 Dimensional deviation
Dimensional deviation shall comply with the requirements of Table 1.
6.10 Water absorption rate
6.10.1 For water-resistant products, the water absorption rate shall not exceed 10%.
6.10.2 For moisture-resistant products, the water absorption rate shall not exceed 25%.
6.11 Surface water absorption
6.11.1 Water resistance products. the surface water absorption of the product shall not
exceed 160 g/m2.
6.11.2 Moisture-resistant products. the surface water absorption should not exceed 220
g/m2.
6.12 Fire stability
For fire-resistant products, the fire stability time should be no less than 40 min.
6.13 Deflection due to moisture
To be determined by both the supplier and the purchaser.
6.14 Shear force
To be determined by both the supplier and the purchaser.
7 Test methods
7.1 Test equipment and instruments
7.1.1 Steel tape measure. the maximum range is 5000 mm; the graduation is 1 mm.
7.1.2 Steel ruler. the maximum range is 1000 mm; the graduation is 1 mm.
7.1.3 Plate thickness gauge. the maximum range is 30 mm; the graduation is 0.01 mm.
7.1.4 Wedge edge depth gauge. the maximum range is 10 mm; the graduation is 0.01
mm.
7.1.5 Electronic scale. the sensitivity is 1 g.
7.1.6 Electronic balance. the sensitivity is 0.01 g.
7.1.7 Electric forced air drying oven. the maximum temperature is 300°C; the
temperature controller sensitivity is 1°C.
7.1.8 Mechanical testing machine. the maximum capacity is 2000 N; the accuracy is
Class 1.
7.1.9 Impact resistance tester. the steel ball diameter is 50 mm; the steel ball mass is
(510 ± 5) g.
7.1.10 Face paper to core material adhesion tester. the total load mass is 3 kg.
7.1.11 Paper surface absorption weight measuring instrument. the steel cylinder inner
diameter is (112.8 ± 0.3) mm.
7.1.12 Fire stability measuring instrument. the diameter of the flame head is (40±1) mm;
the diameter of the flame hole is (2.5±0.1) mm; the maximum temperature is 900℃;
the accuracy of the thermocouple is Class 1.
7.1.13 Moisture deflection test chamber. the temperature can be adjusted to (32±2)℃;
the relative humidity is (90±3)%.
7.2 Test conditions
For laboratories conducting tests on surface density, breaking load, hardness, impact
resistance, adhesion between face paper and core material, water absorption and shear
force, the test environment conditions should be (25±5)℃ and (50±5)% relative
humidity.
The laboratory for surface water absorption test should meet the test environment
conditions of temperature (25±5)℃ and relative humidity (50±3)%.
7.3 Specimen and test piece
5 whole panels constitute a set of specimens. After measuring appearance quality,
dimensional deviation, diagonal length difference, and wedge-shaped edge cross-
sectional dimensions, specimens are cut from the sample at a distance greater than 100
mm from all sides (excluding specimens for end and edge hardness measurements) in
the direction, size, and quantity specified in Table 3.
For end hardness measurement, the test piece shall be cut from either end of the sample
according to the provisions of Table 3, but the distance from the edge shall be greater
than 100 mm. For edge hardness measurement, one test piece shall be taken from each
edge of the sample according to the provisions of Table 3, but the distance from the end
shall be greater than 100 mm.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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