This standard specifies the requirements, sampling, marking and inspection rules for portable tanks of dangerous goods. This standard applies to the inspection of portable tanks for dangerous goods of Class 3 to Class 9 in Chapter 4. GB 19454.1-2004 General Rules for Safety Specifications for Inspection of Portable Tanks of Dangerous Goods GB19454.1-2004 Standard download decompression password: www.bzxz.net
This standard specifies the requirements, sampling, marking and inspection rules for portable tanks of dangerous goods. This standard applies to the inspection of portable tanks for dangerous goods of Class 3 to Class 9 in Chapter 4.
Chapters 5, 7 and 8 of this standard are mandatory, and the rest are recommended.
The degree of consistency between this standard and the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition) is non-equivalent, and its relevant technical content is consistent with the model regulations. The standard text format has been edited according to GB/T1,1-2000.
This standard is proposed and managed by the National Technical Committee for Standardization of Dangerous Chemicals Management (SAC/TC251). The
responsible drafting unit of this standard: Dangerous Goods Central Laboratory of the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China.
Participating drafting units of this standard: Tianjin Exit-Entry Inspection and Quarantine Bureau, Asia-Pacific Dangerous Goods Association, Jiangnan University.
Main drafters of this standard: Wang Libing, Shang Wei, Feng Zhijie, Zhang Lai, Zhang Yong, Zhang Jiangping.
This standard is formulated for the first time.
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any document without a date, the latest version shall apply to this standard
GB/T2828-1987 Sampling procedures and sampling tables for batch inspection (applicable to inspection of continuous batches)
GB/T4122.1-1996 Fundamentals of packaging terminology
GB19434.1-2004 General safety rules for inspection of intermediate bulk containers for dangerous goods
GB19270.1-2003 General safety rules for inspection of packaging of dangerous goods for water transport
ISO4126-1:1996 Safety Valves
United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition)

ICS 13.300
National Standard of the People's Republic of China
GB19454.1—2004
Safety code for inspection of portahle tanks for dangerous goods-General specifications
Issued on March 4, 2004
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Administration of Standardization of the People's Republic of China
Implemented on October 1, 2004
Chapter 5, Chapter 7 and Chapter 8 of this standard are mandatory, and the rest are recommended. The consistency of this standard with the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition) is non-equivalent: its relevant technical contents are consistent with the model regulations, and editorial modifications have been made in the standard text format according to GR/T 1.1-2000. This standard is proposed and approved by the National Technical Committee for Standardization of Dangerous Chemicals Management (SAC/TC251). The responsible drafting unit of this standard is the Dangerous Goods Central Laboratory of the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. The participating drafting units of this standard are: Tianjin Exit Inspection and Quarantine Bureau, Asia Pacific Dangerous Goods Association, Huinan University. The main drafters of this standard are: Wang Libing, Shang Wei, Feng Hun, Zhang Lai, Zhang Yong, Zhang Jiangping. This standard is formulated for the first time.
: 1 Scope
Safety Specification for Inspection of Portable Tanks for Dangerous Goods This standard specifies the requirements, sampling, marking and inspection rules for portable tanks for dangerous goods. This standard is applicable to the inspection of portable tanks for dangerous goods of Class 3 to Class 9 in Chapter 4 of dry cargo transportation. 2 Normative References
GB 19454. 1—2004
The clauses in the following documents become the clauses of this standard through reference in this standard. For any document with a date, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any document without a date, the latest version is applicable to this standard. GB/\2828-1987 Sampling procedure and sampling table for counting inspection of batches (applicable to inspection of continuous batches) GB/T4122.1-1996 Fundamentals of packaging terminology
GB19434.1-2004 General rules for safety specifications for inspection of intermediate bulk containers for dangerous goods GB19270.1—2003 General rules for safety specifications for inspection of packaging of dangerous goods transported by water ISO 4126-1:1996 Safety valves (Safety Valves) United Nations "Protocol on the Transport of Dangerous Goods Model Regulations 13th revised edition) 3 Terms and definitions
GB/T4122.1—1996, GB19434.1—2004 and GB[3[9270.1—2003 and the following terms and definitions established in this standard apply.
Portable tanks
Multimodal tanks with a capacity greater than 450 liters used to transport substances from Class 3 to Class 9. The shell of a portable tank is equipped with auxiliary equipment and structural devices necessary for the transportation of dangerous goods. 3.2
shell
The part of the portable tank that contains the substances to be transported (the tank itself), including the opening and its closing device, but excluding auxiliary equipment or external structural devices.
Service equipment
Measuring instruments and loading, unloading, exhaust, safety, heating, cooling and insulation equipment. 3.4
Structural equipmentstructural equipmentThe external solid parts, fastening parts, protective parts and stabilizing parts of the shell. 3.5
maximum allowable working pressure
shall not be less than the greater of the following two pressures measured at the top of the shell in working condition: a) the maximum effective gauge pressure allowed in the shell during loading or unloading; or b) the designed maximum effective gauge pressure of the shell, which shall not be less than the sum of the following two: 1) the absolute vapour pressure of the substance at 65°C (or the highest temperature during loading, unloading or transport for high temperature substances transported at temperatures above 65°C) minus 100 kPa; 2) the partial pressure of air and other gases in the unfilled space of the tank (kPa), which is determined by the maximum temperature of the unfilled space at 65°C and the average overall temperature rise by one t to be the loading temperature, usually 15t=50°C, which is the liquid expansion caused by the highest average overall temperature.
Design pressure designpressure
The pressure value used in the calculation required by the recognized pressure vessel rules. The design pressure shall not be less than the largest of the following pressures: a) The maximum effective gauge pressure allowed in the shell during loading or unloading, or b) The sum of the following three items:
1) The absolute vapor pressure of the substance at 65°C (the highest temperature during loading, cargo or transportation if the high-temperature substance is transported at a temperature higher than 65°C) minus 100kPa The partial pressure of air and other gases in the unfilled space of the tank (kPa), this partial pressure is determined by the maximum temperature of the unfilled space at 65°C 2)
Temperature and average overall temperature rise t,-t (t, is the loading temperature. Usually 15°C; t,-50°C, is the liquid expansion caused by the highest average overall temperature!
3) The discharge pressure determined by the dynamic force indicated by twice the permissible total mass in the direction of travel multiplied by the gravitational acceleration, the maximum permissible total mass in the horizontal direction perpendicular to the direction of travel (when the direction of travel is unclear, it is twice the maximum permissible total mass) multiplied by the gravitational acceleration, the maximum permissible total mass in the vertical direction multiplied by the gravitational acceleration, and the maximum permissible total mass in the vertical direction multiplied by the gravitational acceleration, but not less than 35kPa; c) Two-thirds of the minimum test pressure value specified in the applicable portable tank regulations in Article 4, 2 of the United Nations Protocol on the Transport of Dangerous Goods Model Regulations (13th revised edition). 3.7
Test pressuretestpressnre
The maximum gauge pressure at the top of the shell during the hydraulic test shall not be less than 1.5 times the design pressure. 3.B
leakproofness test
a test in which the shell and its auxiliary equipment are subjected to an effective internal pressure of not less than 25% of the maximum permissible working pressure. 3.9
maximum permissible gross mass xnass the tare weight of the portable tank and the maximum load allowed for shipment. 4 Classification of dangerous goods
4. Dangerous goods are divided into 9 categories according to their hazard or most important hazard. Some categories are further divided into items. The numerical order of categories and items does not change the order of hazard level. 4.1.1 Class 1: Explosives
~1.1: Substances and articles with a general explosion hazard; -1.2: Substances and articles with a projection hazard but no general explosion hazard; -1.3: Substances and articles with a combustion hazard and a local explosion hazard or a local projection hazard or both, but no general explosion hazard;
-1.4: Substances and articles that do not present a significant hazard; -1.5: Very insensitive substances with a general explosion hazard; -1.6: Extremely insensitive articles without a general explosion hazard. 4.1.2 Class 2: Gases
-2.1: Flammable gases
com-2.2: Non-flammable and non-toxic gases;
2.3: Toxic gases.
4. 1, 3 Class 3: Flammable liquids
4. 1. 4 Class 4 flammable solids; substances liable to spontaneous combustion; substances which emit flammable gases in contact with water - 4.1: flammable solids, self-reactive substances: substances which emit flammable gases in contact with water: - 4.2, substances liable to spontaneous combustion;
- 4.3: substances which emit flammable gases in contact with water. 4. 1. 5 Class 5: Oxidizing substances and organic peroxides - 5.1, oxidizing substances,
5,2: organic peroxides.
4.1.6 Class 6: Toxic and infectious substances - 6.1: toxic substances;
- 6.2: infectious substances.
4.1.7 Class 7: Radioactive materials
4. 1.8 Class 8: Corrosive materials
4.1.9 Class 9: Miscellaneous dangerous substances and articles4.2 Classification of dangerous goods packaging
GB 19454.1—2004
Except for dangerous goods of Class 1, Class 2, Item 5.2, Item 6.2 and Class 7, the packaging of other dangerous goods can be divided into three packaging levels according to the degree of danger:
I packaging level - high danger,
II packaging level - medium danger
II packaging level - slight danger.
The classification of the degree of danger of various dangerous goods can be determined by the relevant dangerous characteristic tests. 5 Requirements
5.1 Portable tanks should be adequately protected to prevent damage to the tank shell and auxiliary equipment due to lateral and longitudinal impact and overturning during transportation. The shell and auxiliary equipment are constructed to withstand impact or contact, and such protection is not required. 5.2 Some chemically unstable substances can only be transported when necessary measures are taken to prevent dangerous decomposition, metamorphosis or aggregation reactions during transportation. Ensure that the tank does not contain any substances that may promote these reactions: 5.3 The temperature of the outer surface of the tank shell (excluding the opening and its closure device) or the insulation layer should not exceed 70°C during transportation. 5.4 Empty portable tanks that have not been washed and deflated should be handled as if they still contain the original substances. 5.5 Substances that may react dangerously with each other and cause the following situations shall not be transported in separate units connected to the shell: a) combustion and/or large amounts of heat; b) emission of flammable, toxic or asphyxiating gases; formation of corrosive substances: d) formation of unstable substances: e) dangerous compression: 5.6 Filling degree: 5,6.1 Before loading, the shipper shall ensure that suitable portable tanks are used and that the portable tanks are not loaded with substances that may react dangerously with the shell materials, gaskets, plug-in equipment and any protective lining materials when they are connected to form dangerous products or significantly reduce the strength of these materials. The loading of portable tanks shall not exceed the limits specified in 5.8.3 to 5.8.9. Applicability of 5.8.3, 5.8.4 or 5.8.8 to individual substances is subject to the applicable portable tank instructions or special provisions in Chapter 4 of the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition). 5.6.2 The generally used maximum filling degree (%) is calculated according to formula (1). 5.6.3 For Class I and II packagings of 6.1 and Class 8 and liquids with an absolute saturated vapor pressure exceeding 175 kPa (1.75 bar) at 65°C, the maximum filling degree (%) is calculated according to formula (2). 97 Fux (%) = i + at, = 7) Fx (%) 1 + a (t -t)
dis-dso
Where:
F—loading degree, %,
t,—highest overall average temperature during transportation, ℃: t—--average temperature during loading, ℃
d1s——density of the liquid at 15℃; ds3density of the liquid at 50℃.
Note: In formulas (1) and (2), α is the average volume expansion coefficient of the liquid between the average temperature during loading (t)) and the highest average overall temperature during transportation (s.), and α can be calculated according to formula ().
5 .6.4 The maximum average overall temperature () shall be 50°C. When transporting under mild or extreme climatic conditions, a lower or higher temperature value may be taken.
5.6.5 The provisions of 5.8.3 to 5.8.6 do not apply to portable tanks containing substances that are kept at a temperature higher than 50°C during transportation (such as using a heating device). Portable tanks containing heated containers shall use a temperature regulator to ensure that the maximum filling is not greater than 95% of its total volume at any time during transportation.
5.6.6 The maximum average overall temperature of liquids transported under high temperature conditions shall be 50°C. The maximum filling degree (%) is calculated according to the following formula (4): dr
Fmax—95
Wherein:
d,-: the density of the liquid at the average temperature during loading; &,-: the density at the highest average overall temperature during transportation. 5.6.7 Portable tanks shall not be transported in the following cases: (4)
a) when loaded with liquids with a viscosity lower than 2G80mm\/s at 20°C or the maximum temperature of the material during transportation of heated materials and the filling degree is greater than 20, but less than 80% unless the shell of the portable tank is separated by partitions or pressure regulating plates , if for tanks with a capacity not exceeding 75001:
b) There are residual loading materials adhering to the outside of the tank shell or its auxiliary equipment; c) When leakage or damage may affect the integrity of the tank or its lifting and fastening accessories. 5.6.B The forklift socket of the portable yoke should be closed when the tank is loaded. However, it does not apply to portable tanks that do not need to be equipped with a forklift socket closing device.
5.7 Additional provisions for the transport of Class 3 substances in portable tanks: 5.7.1 All portable tanks intended for the transport of flammable liquids shall be closed tanks and equipped with pressure relief devices. 5.7.2 For portable tanks intended only for land transportation, the relevant regulations for land transportation may allow the use of an open exhaust system. 5.8 Additional provisions for the transport of organic peroxides of item 5.2 and self-reactive substances of item 4.1 in portable tanks: comGB 19454.1--2004
5.8.1 The following provisions apply to portable tanks for the transport of type F organic peroxides or type F self-reactive substances with a self-accelerating decomposition temperature of 55°C or higher. If these provisions conflict with the provisions in the design and manufacturing requirements, these provisions shall prevail. 5.8.2 Additional provisions for the transport of organic peroxides or self-reactive substances with a self-accelerating decomposition temperature below 55°C in portable tanks shall be specified by the competent authorities.
5.3 The portable tank shall be designed to withstand a test pressure of at least 0.4 MPa. 5.8.4 The portable tank shall be equipped with a temperature sensing device. 5.8.5 The portable tank shall be equipped with a safety decompression device and an emergency decompression device. A vacuum decompression device may also be used. The pressure at which the safety decompression device is activated shall be determined based on the properties of the substance and the structural characteristics of the portable tank. Shell [Fusible plugs are not allowed. The safety pressure relief device should be equipped with a spring valve to prevent the accumulation of decomposition products and vapors generated at 50°C in the portable tank. The pressure relief capacity and the pressure at the beginning of the deflation should be determined according to the test results specified in Article 4.2 of the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition). The determined pressure at the beginning of the deflation cannot cause the liquid to be discharged from the valve when the portable tank overturns.
5.8.6 The emergency pressure relief device can be spring-type or frangible or a combination of the two, which can discharge all the decomposition products and vapors generated when the tank is completely engulfed by flames for not less than one hour. For details, see 4.2.1 of the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition). 13.8.
The pressure value at which the emergency decompression device begins to deflate should be higher than the value specified in 5.10.8 of the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations\13th revised edition" and determined based on the test results described in 5.10.1 of the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition). The size of the emergency decompression device should be designed to ensure that the maximum pressure inside the portable tank will never exceed the test pressure of the medulla.
5.8.7 For insulated tanks, it should be assumed that 1% of the insulation material on the medulla surface area falls off when determining the capacity and positioning of its emergency decompression device.
5.8.8 The vacuum decompression device and the bomb room should be equipped with a fireproof cover. It should be taken into account that the fireproof cover will reduce the decompression capacity. 5.8.9 The arrangement of auxiliary equipment such as doors and external pipes should ensure that no material will remain in them after the portable tank is loaded. 5.8.10 The tank can be insulated or protected by a trace sun cover. If If the white accelerated decomposition temperature of the material in the portable tank is 55°C or below, or the portable tank is made of aluminum structure, the tank should be fully insulated. The outer surface of the tank should be painted with white paint or shiny metal. 5.B.11 The filling degree should not exceed 90% at 15°C. 5.8.12 The marking should include the UN number, technical name and approved concentration of the substance. 5.8.13 Organic peroxides and self-reactive products listed in the portable tank specifications of the United Nations Recommendations on the Transport of Dangerous Goods Model Regulations (13th revised edition) can be transported in portable tanks. 5.9 Use of portable tanks to transport Class 7 substances: 5.9.1 Portable tanks used for the transportation of radioactive materials shall not be used to transport other goods. 5.9.2 The filling degree of portable tanks shall not exceed 90% or any other value approved by the competent authority. 5.10 The safety pressure relief devices of portable tanks used for the transportation of Class 8 inflammatory substances shall be inspected regularly, and the interval shall not exceed, - years. 6 Sampling
6.1 Inspection batch
Portable tanks produced with the same raw materials, the same structure and the same process are one inspection batch, and the maximum batch is 5,000 pieces. 6.2 Sampling rules
Normal inspection according to GB/T2828-1987, one sampling, general inspection level II sampling. 6.3 Sampling quantity
See Table 1.
：comGB 19454. 3—2004
7 Marking
Batch range
151~-280
281-500
5011 200
1 201~3 200Www.bzxZ.net
3 201~5 000
Sampling quantity
Sampling number plate
Unit: piece
Each portable tank should be equipped with a rust-proof metal label permanently fixed in a conspicuous and easy-to-check place on the portable tank. If the label cannot be permanently fixed on the shell due to the location of the portable tank, the shell should at least indicate the information required by the pressure vessel regulations. At least the following information shall be indicated on the label 1 by stamping or other similar methods: Country of manufacture
Name or mark of the manufacturer:
Factory serial number;
Authorized unit approving the design;
Owner registration number;
Year of manufacture;
Approval number
Pressure vessel rules based on which the tank is designed, test pressure
Maximum allowable working pressure
External design pressure
Design temperature range
Water capacity at 20℃
Minutes at 20℃ Water capacity
Date of first pressure test and inspector:
kPa, gauge pressure;
kPa, gauge pressure;
kPa+gauge pressure;
Maximum allowable working pressure of heating/cooling system Shell material and material standard reference number,
Equivalent thickness of reference steel
Lining material:
Most recent periodic test month and type
kPa.gauge pressure,
month, test pressure
Note: The above content should be included on the label at least, and other content can be appropriately added if necessary. kPa gauge pressure.
7.2 The following information should be marked on the portable tank or on a metal plate firmly fixed to the portable tank 1: Manufacturer name:
Maximum allowable total mass
Laden (tare) weight
comGB19454.1—2004
7.3 If the portable tank is designed to allow loading and unloading on the high seas, the words "Sea Portable Tank" should be marked on a conspicuous plate on the side. The words "Sea Portable Tank" should be written on the plate.
7.4 Marking of pressure relief devices:
7.4.1 Each pressure relief device shall be marked with an immediately visible permanent mark indicating: a)
the set discharge pressure (kPa) or temperature (); h)
spring device: discharge pressure tolerance; sintering disc: reference temperature corresponding to the rated pressure; d)
fusible plug: temperature tolerance; and
the rated flow capacity of the device expressed in standard m/s; e)
where practical circumstances permit, the following information shall also be indicated: f) the name of the manufacturer and the relevant product registration number. 7.4.2 The rated flow capacity marked on the pressure relief device shall be determined in accordance with ISO 4126-1:1996. 7.4.3 The passage to the pressure relief device shall be of sufficient size to allow the material to be discharged to pass to the safety device without restriction. No stop valve shall be installed between the shell and the pressure relief device, except for the installation of a double pressure relief device for maintenance or other reasons, and the stop valve of the pressure relief device actually used shall be locked in the open position, or the stop valve shall be interlocked so that at least one of the double devices is always in use. The opening leading to the exhaust or pressure relief device shall not be obstructed to avoid restricting or cutting off the flow from the shell to the device. If a vent or pipe is used for the outlet of the pressure relief device, the released vapor or liquid shall be discharged to the atmosphere under the condition where the pressure relief device is subjected to the minimum back pressure.
8 Inspection regulations
The manufacturer shall ensure that the portable tank produced shall comply with the provisions of this standard and shall be inspected by the relevant inspection department in accordance with this standard. The user has the right to request acceptance inspection of the received products in accordance with the provisions of this standard. 8.1 Inspection items
Inspect each item in accordance with the requirements of Section 5 and Section 7 of this standard. 8.2 Determination of batches
The portable tank shall be inspected batch by batch based on the order quantity. 8.3 Judgment rules
Use GB/T2828-1987 normal inspection sampling plan, qualified quality level is 4.0 (AQI.m.4.0), qualified judgment number see Table 2.
Table 2 Qualified judgment number
Normal-second sampling AQL=4.0
Number of samples
8.4 Unqualified batch processing
Qualified judgment number
The portable tanks in the unqualified batch are removed and submitted for inspection again, and the strictness remains unchanged. comUnqualified judgment number
Unit is piece3. The passage to the pressure relief device should be of sufficient size to allow the material to be discharged to the safety device without restriction. No stop valve should be installed between the shell and the pressure relief device, unless a double pressure relief device is installed for maintenance or other reasons, and the stop valve of the pressure relief device actually used is locked in the open position, or the stop valve is interlocked so that at least one of the double devices is always in use. There should be no obstructions at the opening leading to the vent or pressure relief device to avoid restricting or cutting off the flow from the shell to the device. If a vent hole or pipe is used for the outlet of the pressure relief device, the released vapor or liquid should be discharged to the atmosphere under the condition where the pressure relief device is subjected to the minimum back pressure.
8 Inspection regulations
The manufacturer shall ensure that the portable tank produced by the manufacturer complies with the provisions of this standard and shall be inspected by the relevant inspection department in accordance with this standard. The user has the right to request acceptance inspection of the received products in accordance with the provisions of this standard. 8.1 Inspection items
Inspect each item according to the requirements of Section 5 and Section 7 of this standard. 8.2 Determination of batches
Portable tanks should be inspected batch by batch based on the order quantity. 8.3 Judgment rules
Use the normal inspection and one-time sampling plan of GB/T2828---1987, the qualified quality level is 4.0 (AQI.m.4.0), and the qualified judgment number is shown in Table 2.
Table 2 Qualified judgment number
Normal-second sampling AQL=4.0
Number of samples
8.4 Unqualified batch processing
Qualified judgment number
The portable tanks in the unqualified batch shall be removed and submitted for inspection again, and the strictness remains unchanged. comUnqualified judgment number
The unit is piece3. The passage to the pressure relief device should be of sufficient size to allow the material to be discharged to the safety device without restriction. No stop valve should be installed between the shell and the pressure relief device, unless a double pressure relief device is installed for maintenance or other reasons, and the stop valve of the pressure relief device actually used is locked in the open position, or the stop valve is interlocked so that at least one of the double devices is always in use. There should be no obstructions at the opening leading to the vent or pressure relief device to avoid restricting or cutting off the flow from the shell to the device. If a vent hole or pipe is used for the outlet of the pressure relief device, the released vapor or liquid should be discharged to the atmosphere under the condition where the pressure relief device is subjected to the minimum back pressure.
8 Inspection regulations
The manufacturer shall ensure that the portable tank produced by the manufacturer complies with the provisions of this standard and shall be inspected by the relevant inspection department in accordance with this standard. The user has the right to request acceptance inspection of the received products in accordance with the provisions of this standard. 8.1 Inspection items
Inspect each item according to the requirements of Section 5 and Section 7 of this standard. 8.2 Determination of batches
Portable tanks should be inspected batch by batch based on the order quantity. 8.3 Judgment rules
Use the normal inspection and one-time sampling plan of GB/T2828---1987, the qualified quality level is 4.0 (AQI.m.4.0), and the qualified judgment number is shown in Table 2.
Table 2 Qualified judgment number
Normal-second sampling AQL=4.0
Number of samples
8.4 Unqualified batch processing
Qualified judgment number
The portable tanks in the unqualified batch shall be removed and submitted for inspection again, and the strictness remains unchanged. comUnqualified judgment number
The unit is piece
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