Some standard content:
GB17840—1999
This standard adopts the American UI.752:1995 "Bullet-proof Glass" in terms of technical content, and refers to the British BS5051:1988 "Bullet-proof Glass", ASTMF1233:1995 "Test Methods for Bullet-proof Glass Materials and Systems" and other standards. This standard only stipulates the test methods and requirements for ballistic performance, and other performances adopt the corresponding provisions of GB9656--1996 "Automobile Safety Glass" and GB9962-1999 "Laminated Glass". This standard is proposed by the State Bureau of Building Materials Industry. This standard is under the jurisdiction of the Glass and Special Fiber Research Institute of China Building Materials Science Research Institute. This standard is drafted and interpreted by the Glass and Special Fiber Research Institute of China Building Materials Science Research Institute. Participating drafting units of this standard: Ordnance Industry Civilian Firearms and Ammunition Quality Supervision and Inspection Center, Shandong Laiyang Great Wall Safety Glass Factory, Guangdong Lunjiao Automobile Glass Co., Ltd., China South Glass Group Co., Ltd. The main drafters of this standard are Shi Xinyong, Liu Xiumin, Mo Jiao, Dai Lei, Wang Yingzhou and Li Kuishu. 455
1 Scope
National Standard of the People's Republic of China
Bullet resistant glazing
Bullet resistant glazing
GB17840 - 1999
This standard specifies the classification, performance requirements, test methods, inspection rules and packaging, marking, transportation and storage of bullet-resistant glazing. This standard is applicable to bullet-resistant glazing for automobiles, buildings and other purposes. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T6544-1986 Corrugated cardboard
GB9656-1996 Safety glass for automobiles (for certification) GB9962-1999 Laminated glass (eqvJISR3205:1989) GB11614-1999
Float glass
GB/T17340-1998 Size, shape and appearance of automobile safety glass JC/T512-1993 Automobile safety glass packaging JC/T632-1996 Automobile safety glass Terminology 3 Definitions
This standard adopts the definitions of JC/T632 and the following definitions. 3.1 L-bullet resistant glazing L-bullet resistant glazing can block the penetration of bullets, and the splashes on the back of the impacted glass should not penetrate the bullet-resistant glass of the test card. 3.2M-type bullet-resistant glazing can block bullet penetration, and there are splashes on the back of the impacted glass, but the splashes should not be embedded in the bullet-resistant glass on the test card. 3.3H-type bullet-resistant glazing can block bullet penetration, and there is no fragmentation on the back of the impacted glass. 3.4 Attack face
The surface of the bullet-resistant glass facing the muzzle of the gun during the shooting test. Generally determined by the manufacturer and marked clearly. 3.5 Shooting distancetest range
The vertical distance between the muzzle of the gun and the impact surface of the bullet-resistant glass sample during shooting. 3.6 Bullet velocity rangebulletvelocity
The range from the minimum to the maximum initial velocity of a certain gun bullet. 3.7 Striking distanceThe distance between the center of the impact point and the center of the impact point after the sample is shot. 3.8 Witness card
A kind of corrugated cardboard placed behind the glass to test glass splashesApproved by the State Administration of Quality and Technical Supervision on September 1, 1999456
Implementation on August 1, 2000
3.9 Penetration
GB 17840-1999
After bulletproof glass is hit, a through hole or a crack through which air can pass appears on the glass. 3.10 Glass splinter
After bulletproof glass is hit, fragments of the glass fly away from the glass body. 3.11 Fair hit
A shot that meets the requirements of Table 3 or any of the following requirements is a fair hit: a) After the shot, the measured bullet speed is less than the minimum speed of the specified bullet speed range, and the glass sample is penetrated as a result of the shot; b) After the shot, the measured bullet speed is greater than the maximum speed of the specified bullet speed range, and the shot does not affect the result determination of the ballistic performance of such glass sample;
c) After the shot, the measured bullet impact point distance is less than the specified distance, and the other requirements of Table 3 are met, and the shot does not affect the result determination of the ballistic performance of such test sample;
d) After the shot, the measured bullet impact point distance is greater than the specified distance, and the glass sample is penetrated as a result of the shot. 3.12 Unfair hit
A shot other than a fair hit is an invalid hit. 4 Product classification
4.1 Classification
4.1.1 According to the different bulletproof performance of bulletproof glass: a) Class-A bulletproof glass;
b) Class-M bulletproof glass;
c) Class-H bulletproof glass.
4.1.2 According to application:
a) Q-bulletproof glass for automobiles,
b) J-bulletproof glass for buildings and other uses.
4.2 Grading
Bullet-proof glass of the same category shall be classified according to its ability to resist firearms and bullets as follows: Can resist Type 64 7.62mm pistol;
a) F64 grade
b) F54 grade
Can resist Type 54 7.62mm pistol;
Can resist Type 79 7.62mm light submachine gun;
c) F79 grade
d) F56 grade
e) FJ79 grade
Can resist Type 56 7.62mm submachine gun;
Can resist Type 79 7.62mm sniper rifle;
The performance requirements of firearms and bullets used in each grade shall comply with the provisions of Table 3. 4.3 Product marking
Each product shall be clearly marked with the standard code, bulletproof grade, category and impact surface of the product. Various bullet-proof glasses that meet the requirements of this standard may indicate their grades and category symbols in the product markings according to Table 1. Table 1
Grade symbol
Performance category
L-type bullet-proof glass
L.-type bullet-proof glass
L-type bullet-proof glass
1.-type bullet-proof glass
Grade symbol
FJ79-1
FJ?9-M
FJ79-H
GB 17840-1999
Table 1 (end)
Performance category
L-type bullet-proof glass
M-type bullet-proof glass
M-type bullet-proof glass
M-type bullet-proof glass
H Example: The mark for F64 grade I. type bulletproof glass for automobiles is: GB××××--×× F64-LQ. Requirements
The technical requirements for bulletproof glass for different purposes shall comply with the provisions of the corresponding clauses in Table 2. Table 2 Technical requirements and test methods Clauses
Bullet-proof glass for automobiles
Dimensional deviation
Fitness
Appearance quality
Transmittance
Secondary image deviation
Light distortion
Color recognition
Heat resistance
Radiation resistance
Moisture resistance
Bullet-proof performance
GB 9656-1996
Technical requirements
Test methods
GB/T17340-1998
Technical requirements
Test methods
Bullet-proof glass for buildings and other uses
GB 9962--1999
Technical requirements
5.2 Bulletproof capability of this standard and test method clauses in Chapter 6
Bullet-proof glass shall be made of glass materials that meet the requirements of the following standards or materials that meet the requirements of the corresponding technical conditions or order documents.
Glass materials
Float glass shall meet the requirements of GB11614. 458
Rolled glass shall meet the requirements of the corresponding technical conditions. 5.7.2 Plastic transparent materials
GB 17840-1999
Polycarbonate sheets and acrylic sheets shall meet the requirements of the corresponding technical conditions. 5.1.3 Intermediate layer material
When there is no special requirement, polyvinyl butyral and polyurethane intermediate film are generally used, which shall meet the requirements of the corresponding technical conditions or order documents.
5.1.4 Other materials
Other new materials used to process high-strength and lightweight bullet-proof glass. 5.2 Bulletproof capability
Three samples of each category and grade of bullet-proof glass are taken for testing, and the number of shots required for each sample shall comply with the provisions of Table 3. For bullet-proof glass used at room temperature, the sample shall meet the requirements of a) in 6.2 of this standard, and the bulletproof performance shall meet the requirements of Table 3. For bullet-proof glass used in special temperature environments, one sample shall be required to be tested under room temperature, low temperature and high temperature conditions, and the sample shall meet the requirements of 6.2 of this standard, and the bulletproof performance shall meet the requirements of Table 3. When selecting firearms and bullets different from those specified in Table 3 for bulletproof capability testing, it can be agreed upon by the supply and demand parties, but the performance parameters of the firearms and bullets shall be indicated in the report.
Table 3 Performance requirements for specific firearms and bullets at each level Bulletproof
64 type 7. 62 mm
54 type 7. 62 mm
64 type 7. 62 mm
Pistol bullet (lead core)
4. 72~4. 87g
51-1 type 7.62mm
Pistol bullet (steel core)
5. 56~5. 69 g
79 type 7.62mm51-1 type 7.62mm
Light submachine gun
56 type 7. 62 mm
Submachine gun
79 type 7. 62 mm
Sniper rifle
6 Test method
6.1 Test conditions
Velocity range
300~320
420~440
Pistol bullet (steel core)
480~515
5. 56~5. 69 g
56 type 7.62 mm
Ordinary bullet (steel core)
7. 75 ~ 8. 05 g
53 type 7. 62 mm
Ordinary bullet (steel core)
9. 45 ~ 9. 75 g
212.4~~249.3
490.4~550.8
640.5~754.6
710~7251 953. 4~2 115. 6
830~8703255~3 689.9
Unless otherwise specified, the test shall be carried out under the following conditions: temperature: 20℃±5℃,
atmospheric pressure: 8.60×10*~1.06×105Pa; relative humidity: 40%~80%.
6.2 Test specimen
Impact point distanceBulletproof capability
Shooting distanceShooting
100±10
Impact point is
Equilateral triangle
100±10
Impact point is
Equilateral triangle
100±20
Impact point is
Equilateral triangle
100±8
Impact point is
Equilateral triangle
Center of test specimen
Range
The test specimen must be made of the same material and produced under the same process conditions as the product. The sample size is a square of 420mm±5mm. There are three test specimens in total, and at least one extra test specimen is provided for backup. 459
GB 17840—1999
a) Normal temperature test: The sample should be placed at 20℃±5℃ for 3h. b) Low temperature test: The sample should be placed at 29℃±3℃ for 3h, then taken out and immediately subjected to shooting test. c) High temperature test: The sample should be placed at 49℃±3℃ for 3h, then taken out and immediately subjected to shooting test. 6.3 Test equipment
6.3.1 Test card
The test card is a corrugated cardboard with a thickness of about 3.2mm and conforming to the S-3.2 category specified in GB/T6544. It is placed about 450mm behind the glass to be tested and has an area of not less than 600mm×600mm. 6.3.2 Test stand
a) The test stand should be made of metal material and have sufficient strength to keep the position of the sample unchanged during the test. b) The test stand should ensure that the sample can be installed vertically, and the left and right sides of the sample should be clamped, with at least three fixing points on each side. The contact surface between the frame and the sample should be glued with a rubber strip of at least 15mm wide and 3mm thick. The test stand should ensure that the geometric center of the test card and the sample are on the same axis. c) The test stand should be designed to be able to install test samples of glass of different thicknesses, and ensure that there is a clear shooting area of 350mm×350mm, and it is easy to move to meet the needs of different shooting distances. d) The position of the test card should be fixed and 450mm away from the nearest surface of the glass on the opposite test stand. e) A safe protective shelter should be established to protect the safety of the operator, and a weapon firing remote control system should be installed when necessary. 6.3.3 Speed measurement system
In order to measure the speed of the bullet, a suitable speed measurement device should be used between the firearm and the test sample. The test accuracy should be less than 0.5%. Measure the bullet speed at 1.5m from the muzzle. 6.4 Test Procedure
6.4.1 According to the requirements of the product's ballistic performance level, determine the firearm, bullet type, and shooting distance according to Table 3. 6.4.2 Install the sample that meets the specified requirements on the test stand, and make sure that the impact surface of the sample is facing the muzzle of the firearm and perpendicular to the shooting direction.
6.4.3 Draw an equilateral triangle in the center of the sample. The length of each side should meet the requirements of the impact point distance in Table 3, and mark the impact point position with obvious markings; if it is FJ79 grade bulletproof glass, the impact point position should be marked in the center of the sample to facilitate the shooter to aim and shoot. 6.4.4 Ensure that the bullet incident direction is basically perpendicular to the surface of the sample, connect the speed measuring device, and measure the bullet speed. 6.4.5 After each shooting, check and record whether the sample is penetrated, measure the actual distance between the impact points, determine the effectiveness of the shooting, and record it.
6.4.6 After each shot, check against the light. If any light passes through the test card, it means that the test card is penetrated. 6.4.7 Replace the test card and continue the shooting test of the remaining samples. After the shooting is completed, determine the bulletproof level of the glass. If invalid shooting occurs during the shooting test, a new sample should be replaced and tested again. 6.5 Determination of test results
After shooting, the bulletproof category of this level of bulletproof glass is determined by the lowest category of the three samples. 6.5.1 After each shot, if any of the following situations occurs, the bulletproof glass of this level is judged to be unqualified. a) The bullet penetrates the bulletproof glass sample;
b) The bulletproof glass sample is not penetrated, but the splashes on the back of the glass penetrate the test card. 6.5.2 After each shot, if the bulletproof glass meets the following requirements at the same time, it is L-type bulletproof glass. a) The bulletproof glass sample is not penetrated;
b) The splashes on the back of the glass should not penetrate the test card. 6.5.3 After each shooting, if the bullet-proof glass meets the following requirements at the same time, it is a Class M bullet-proof glass. a) The bullet-proof glass specimen is not penetrated;
b) The splashes on the back of the glass should not be embedded in the test card. 6.5.4 After each shooting, if the bullet-proof glass meets the following requirements at the same time, it is a Class H bullet-proof glass. a) The bullet-proof glass specimen is not penetrated;
b) No fragments fall off the back of the glass.
6.6 Test report
The report should include the following:
a) Manufacturer's name;
b) Sample, product name, specification and structure;
Detailed description of the firearm and bullet;
d) Inspection items and inspection basis;
e) Test results;bzxZ.net
f) Test date.
7 Inspection rules
7.1 Inspection classification
Inspection is divided into identification inspection and quality consistency inspection. 7.2 Identification and inspection
7.2.1 Inspection items
GB 17840 1999
The inspection items are all technical requirements of the product specified in Table 2 of this standard. The performance of bullet-proof glass for automobiles includes: size deviation, fit, appearance quality, thickness, transmittance, secondary image deviation, light distortion, color recognition, heat resistance, radiation resistance, moisture resistance, and ballistic performance: The performance of bullet-proof glass for buildings and other uses includes: size deviation, appearance quality, thickness, transmittance, heat resistance, radiation resistance, moisture resistance, and ballistic performance.
7.2.2 Identification inspection and judgment
When testing the technical performance required by the product with samples, the samples under the same process conditions should be used. According to the corresponding provisions of Chapter 5 of this standard, the product's single performance qualification shall be judged. If one or more of the performances are unqualified, the product is an unqualified product.
7.3 Quality consistency inspection
7.3.1 Inspection items
a) Piece-by-piece inspection: Each product shall be inspected for dimensional deviation and appearance quality. Automotive bulletproof glass shall also be inspected for fit, secondary image deviation, and light distortion performance.
b) Sampling inspection: thickness, heat resistance, radiation resistance, moisture resistance, and ballistic performance. Automotive bulletproof glass shall also be inspected for transmittance and color recognition performance.
7.3.2 Quality consistency inspection batch rules and judgmenta) When inspecting piece by piece, if one of the items is unqualified, the product is considered unqualified and should be removed from the batch. b) Sampling inspection: When the batch production of bulletproof glass products accumulates for one year. For the technical performance required by the product, if the product is inspected, it shall be randomly selected from the batch of products according to the number required by the test items. If the sample is used for inspection, the sample produced under the same process conditions shall be used. According to the corresponding clauses specified in Chapter 5 of this standard, the product single performance qualification shall be determined. If one of the performances is unqualified, the batch of products shall be unqualified. 8 Packaging, marking, transportation, storage
8.1 Packaging
The product shall be packed in containers or wooden boxes. Each piece of glass shall be packed in plastic bags or paper. The space between the glass and the packaging box shall be filled with soft and light materials that are not easy to cause appearance defects such as glass scratches. The specific requirements shall comply with the provisions of JC/T512. 8.2 Marking
The marking shall comply with the relevant provisions of JC/T512. The words "upward, handle with care" and glass thickness, product model, factory name or trademark shall be marked on the outside of each packaging box.
8.3 Transportation
GB17840--1999
The product is transported by various types of vehicles. The handling rules and conditions shall comply with the relevant provisions of JC/T512. During transportation, the glass shall not be placed flat or tilted. The length direction shall be the same as the transportation direction of the vehicle. There shall be protective facilities. 8.4 Storage
The product shall be stored vertically in a dry room. 462
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