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GB 24459-2009 English PDF

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GB 24459-2009: Non-sparking beryllium copper alloy tools
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Basic data

Standard ID GB 24459-2009 (GB24459-2009)
Description (Translated English) Non-sparking beryllium copper alloy tools
Sector / Industry National Standard
Classification of Chinese Standard J47
Classification of International Standard 25.140.30
Word Count Estimation 21,254
Date of Issue 2009-10-15
Date of Implementation 2010-12-01
Adopted Standard JIS M7615-1987, MOD
Regulation (derived from) Announcement of Newly Approved National Standards No. 11 of 2009 (No. 151 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Chinese standard specifies the classification proof tools are copper alloy, size, requirements, test methods, inspection rules and signs, packaging, transportation and storage. This standard applies to mines, factories and ships, vehicles, aircraft, oil gas chemical industry, military, gunpowder, oil depots, petrol stations and other industries in the production, storage and transportation process due to mechanical spark could cause an explosion in an environment to be used in explosion-proof copper alloy tool.

GB 24459-2009: Non-sparking beryllium copper alloy tools

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Nonsparking beryllium copper alloy tools ICS 25.140.30 J47 National Standards of People's Republic of China Beryllium copper alloy explosion - proof tools 2009-10-15 release 2010-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

4.1,4.2 and 7.1 of this standard are mandatory and the rest are recommended. The use of this standard JISM7615-1987 "beryllium copper alloy explosion-proof tool category." The main differences between this standard and JISM7615-1987 are as follows. --- the standard to delete the word with the strength of the relevant content; --- This standard adds Chapter 6 "Inspection Rules"; --- This standard adds Chapter 7, "Marking, Packaging, Transportation, Storage". This standard is proposed by the China Light Industry Federation. This standard is under the jurisdiction of the National Committee for the Standardization of Hardware Products. The drafting unit of this standard. National Light Industry Explosion-proof Tools Quality Supervision and Testing Center, Tianjin Hardware Tools Research Institute, Tianjin Factory, Cangzhou Bohai Explosion-proof Special Tools Co., Ltd., Shijiazhuang Xinda Explosion-proof Tools Factory, Shijiazhuang Yu-hsin explosion-proof tool limited liability the company. The main drafters of this standard. Peng Hongru, Ran Yutian, Zhang Peihan, Liu Fengxiang, Fu Jingyi, Wang Bingwu, Li Zhicai. This standard is the first release. Beryllium copper alloy explosion - proof tools

1 Scope

This standard specifies the beryllium copper alloy explosion-proof tool classification, size, requirements, inspection methods, inspection rules and signs, packaging, transportation, Storage. This standard applies to mines, factories and ships, vehicles, aircraft, oil, chemical, military, gunpowder, oil depots, petrol stations and other industries in the production, storage The beryllium copper alloy explosion-proof tool used in the environment where the mechanical sparks may cause an explosion.

2 normative reference documents

The terms of this document are hereby incorporated by reference into this standard. Whichever is the date of the reference file, which is followed by all The amendments (not including corrigenda) or revisions do not apply to this standard, however, the parties that encourage the agreement under this standard are No use of the latest version of these files. For undated references, the latest edition of this document applies to this standard. GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1. Test methods (A, B, C, D, E, F, G, H, K, N, T) (GB/T 230.1-2009, ISO 6508-1..2005, MOD) GB/T 701 low carbon steel hot rolled coil GB/T 2828.1 Sampling inspection procedures Part 1. Batch inspection sampling plan for retrieval by quality limit (AQL) (GB/T 2828.1-2003, ISO 2859-1..1999, IDT) GB/T 5121 (all parts) Methods for chemical analysis of copper and copper alloys GB/T 5305 Handmade packaging, marking, transportation and storage Test method for explosion - proof performance of beryllium copper alloy tools GB/T 23163

3 Classification and specification dimensions

3.1 Classification The classification of beryllium copper alloy explosion-proof tools is shown in Table 1. Table 1 The serial number is divided according to the opening according to the opening and the shank according to the other features 1 single head wrench single head - round 2 double-headed wrench double-headed - round 3 chisel - - - 4 round hammer - - - 5 octagonal hammer - - - 6 barrel wrench - - flat type 7 wrench - - - 8 pipe clamps - 23 ° - 9 word spinning - - ordinary type 10 single head plum wrench single head 15 °, 45 ° - Table 1 (continued) The serial number is divided according to the opening according to the opening and the shank according to the other features 11 double-headed wrench wrench double head 15 °, 45 ° - 12 carp pliers - - - 13 steel pliers - - - 14-type picks - - - 15 other can be manufactured according to user requirements 3.2 Size 3.2.1 single-headed wrench shown in Figure 1, the size of the specifications in accordance with Table 2. Figure 1 single-headed wrench diagram Table 2 single-headed wrench size unit in millimeters specification Opening size S head width S1 head thickness T length L Basic Dimension Tolerance Maximum Maximum Tolerance ± 6% 10 10 + 0.19 + 0.04 26 6 110 13 13 + 0.24 + 0.04 33 7.5 135 16 16 + 0.27 + 0.05 40 9.5 160 18 18 + 0.30 + 0.05 44.5 10 170 +0.36 +0.06 52 11.200 58 11.5 220 30 30 + 0.48 + 0.08 70 13.5 270 +0.60 +0.10 82 15.5 320 3.2.2 double-headed wrench shown in Figure 2, the size of the specifications in accordance with Table 3. Figure 2 double-headed wrench diagram Table 3 double-headed wrench size unit in millimeters specification Opening S head width S1 Small end big end small end big end Head length T length L Basic dimensions Tolerance Basic dimensions Tolerance Maximum Maximum Maximum tolerance ± 6% 10 × 13 10 + 0.19 + 0.04 13 +0.19 +0.04 26 33 6.5 135 13 × 16 13 + 0.19 + 0.04 16 +0.27 +0.05 33 40 9.5 160 16 × 18 16 + 0.27 + 0.05 18 +0.30 +0.06 40 44.5 10 170 18 × 21 18 21 × 24 21 24 × 27 24 27 × 30 27 30 × 32 30 32 × 36 32 36 × 41 36 41 × 46 41 +0.30 +0.06 +0.36 +0.06 +0.48 +0.08 +0.60 +0.10 +0.36 +0.06 +0.48 +0.08 +0.60 +0.10 44.5 52 11.200 52 58 11.5 220 58 62 12.5 245 62 70 13.5 270 74 82 15.5 320 92 105 19 400 3.2.3 chisel as shown in Figure 3, the size of the specifications in accordance with Table 4. Figure 3 Schematic diagram of the chisel Table 4 chisel dimensions in millimeters 20 ×.200.200 50 20 3 19 27 ×.200.200 70 27 4.5 25 27 × 250 250 70 27 4.5 25 3.2.4 round hammer as shown in Figure 4, size and quality in accordance with the provisions of Table 5. Figure 4 round hammer diagram Table 5 round hammer size and quality specification Size/mm quality Φ a b Minimal 1  30 40 8 62 34 15 10 14 9 0.11 9 80 44 20 14 19 13 0.23 11 93 50 25 18 23 16 0.34 13 100 55 28 20 23 16 0.45 16 118 65 30 22 27 20 0.67 18 130 72 32 24 28 20 0.91 20 148 80 34 26 30 22 1.36 -2% 3.2.5 octagonal hammer as shown in Figure 5, the size of the quality of the provisions of Table 6. Figure 5 Schematic diagram of octagonal horn Table 6 octagonal hammer size and quality specification Size/mm quality A l b 1 b 2 b 3 b 4 kg tolerance 3 44 111 30 20 28 16 1.36 4 48 118 30 20 28 18 1.82 5 51 128 33 23 31 21 2.27 6 53 138 34 27 32 25 2.72 8 59 152 34 27 32 25 3.63 10 62 166 34 27 32 25 4.53 12 67 173 34 27 32 25 5.45 15 71 190 34 27 32 25 6.80 -2% 3.2.6 bucket lid wrench as shown in Figure 6 specifications and size. The unit is in millimeters Figure 6 barrel wrench diagram 3.2.7 live wrench as shown in Figure 7, the size of the provisions of Table 7. Figure 7 live wrench diagram Table 7 live wrench size units in millimeters 100 110 35 12 16 8 150 160 48 14 20 10 200 210 60 16 24 12 250 260 73 18 28 14 300 310 86 20 32 16 375 390 105 25 40 19 3.2.8 Pipe clamps As shown in Figure 8, the dimensions are specified in Table 8. Figure 8 tube clamp diagram Table 8 Pipe clamp dimensions in millimeters specification Active jaw body A b L1 L2 Maximum clamping diameter 200 28 15 95 160 6 ~ 20 250 32 17 115.200 6 ~ 26 300 38 19 135 240 10 ~ 32 350 44 21 155 285 13 ~ 38 450 50 24 180 370 26 ~ 52 600 58 28 215 495 38 ~ 65 900 72 34 280 750 50 ~ 95 Note. The specification is expressed by the total length of the outer contour with the maximum clamping diameter. The maximum clamping diameter range is generally expressed as the outer diameter of the pipe. 3.2.9 One word screw as shown in Figure 9, the size of the specifications in accordance with Table 9. Figure 9 Schematic diagram of the word Table 9 Dimensions of the word screw in millimeters specification Rotary front 4.5 × 50 50 5 0.6 4.5 ± 0.2 4.5 × 75 75 5 0.7 5.5 ± 0.3 6 × 100 100 5.5 0.8 6 ± 0.3 7 × 125 125 6 0.9 7 ± 0.3 8 × 150 150 7 1.0 8 ± 0.3 9 ×.200.200 8 1.1 9 ± 0.3 10 × 250 250 8 1.2 10 ± 0.3 10 × 300 300 8 1.2 10 ± 0.3 Note. The length of the swivel can be determined according to the purpose. 3.2.10 single head wrench as shown in Figure 10, the size of the specifications in accordance with Table 10. Figure 10 Schematic diagram of a single-head flower wrench Table 10 single-headed wrench wrench size unit in millimeters specification Side size Datum tolerance Full length L (approximately) Thickness T (maximum) Outer diameter D (maximum) 10 10 + 0.24 + 0.04 160 9 17 13 13 + 0.30 + 0.04 190 11 22 16 16 + 0.35 + 0.05 230 13 27 18 18 + 0.35 + 0.06 250 14 30 +0.46 +0.06 305 18.5 40 30 30 + 0.70 + 0.08 370 21.5 50 +0.70 +0.10 3.2.11 double-headed wrench as shown in Figure 11, the size of the specifications in accordance with Table 11. Figure 11 Schematic diagram of double-headed wrenches Table 11 double-headed wrenches in millimeters specification Side size S1 S2 Basic dimensions tolerances basic dimensions tolerances Full length L (approximately) Thickness (max) Outside diameter (max) T1 T2 D1 D2 10 × 13 10 + 0.24 + 0.04 13 +0.30 +0.04 180 9 11 17 22 13 × 16 13 + 0.30 + 0.04 16 +0.35 +0.05 210 11 13 22 27 16 × 18 16 + 0.35 + 0.05 18 +0.40 +0.05 240 13 14 27 30 Table 11 (continued) Units in millimeters specification Side size S1 S2 Basic dimensions tolerances basic dimensions tolerances Full length L (approximately) Thickness (max) Outside diameter (max) T1 T2 D1 D2 18 × 21 18 21 × 24 21 24 × 27 24 27 × 30 27 30 × 32 30 32 × 36 32 36 × 41 36 41 × 46 41 +0.40 +0.05 +0.46 +0.06 +0.56 +0.08 +0.70 +0.10 +0.46 +0.06 +0.56 +0.08 +0.70 +0.10 265 14 16 30 36 290 16 18.5 36 40 320 18.5 20.5 40 45 340 20.5 21.5 45 50 360 21.5 22 50 53 400 22 26 53 60 430 26 21 60 68 460 21 28 68 77 3.2.12 carp pliers as shown in Figure 12, the size of the specifications in accordance with Table 12. Figure 12 diagram of carp pliers Table 12 carp pliers size in millimeters specification size A Tolerance B Tolerance C Tolerance E Tolerance Shear Wire Maximum Diameter 150 150 minimum 42 ± 3 11 max 45 max 3 200.200 minimum 47 ± 3 12 max 50 max 4 max 3.2.13 Wire Clamps As shown in Figure 13, the dimensions are specified in Table 13. Figure 13 Schematic diagram of steel wire clamp Table 13 wire clamp size in millimeters specification size 150 22 ± 0.7 12.5 ± 0.7 50 max 12 max 20 160 ± 4 175 24 ± 0.7 13.5 ± 0.7 52 max 13 max 22 185 ± 4 200 27 ± 0.7 14.5 ± 0.7 54 max 14 max 25 210 ± 4 3.2.14 Shape Hopper As shown in Figure 14, the mass dimension shall be as specified in Table 14. The unit is in millimeters Figure 14 Schematic diagram of a word Table 14 The quality unit of the word pick is kilograms Type quality tolerance One word pick 3.25 + 0.2-0.1 3.2.15 The dimensions of the products and other types of products covered by this standard may be determined according to the requirements of both parties.

4 requirements

4.1 Materials The material of the product is beryllium copper alloy. Beryllium copper alloy Chemical composition. Be 1.8% to 3.0% Co + Ni 0.2% or more Co + Ni + Fe 1.2% or less Cu + Be + Co + Ni + Fe 99.0% or more 4.2 explosion resistance of beryllium copper alloy Explosion-proof performance is divided into falling hammer, rotary friction, high-speed impact. Three kinds of explosion-proof performance can not be exploded. 4.3 size Shall comply with the provisions of 3.2.1 ~ 3.2.15. 4.4 appearance There should be no obvious scars, there should be no cracks, curling, bending and other defects, the handle should be straight. 4.5 Hardness Should be above 35HRC. 4.6 Strength After the inspection product quality should meet the following requirements. 4.6.1 stay wrench opening positive and negative front-end permanent deformation. specifications (10mm ~ 18mm) should be 0.15mm below, (19mm ~ 46mm) should be 0.2mm below, and the test rod in contact with both sides of the opening should not be significantly damaged. 4.6.2 bucket lid wrench opening width of the maximum deformation should be 0.5mm below the contact with the square test rod surface should not be obvious damage. 4.6.3 live wrench worm gear and the meshing of the movement and the movement of the body should be flexible, the deformation of the opening should be 0.5mm below, with the test Rod indentation should be within 0.1mm or less. 4.6.4 pipe clamp and rod contact with the place should not be significantly damaged. 4.6.5 one word rotary test after the front end should not be defective, curved, other parts should not be damaged. 4.6.6 Plum wrenches with the specimen contact the mouth of the mouth should not be significantly damaged. 4.6.7 carp pliers when the maximum deformation of the handle. specifications 150mm,.200mm should be (2mm ~ 6mm), (2mm ~ 8mm); maximum permanent deformation. specifications 150mm,.200mm should be 0.4mm, 0.5mm below. 4.6.8 The maximum permanent deformation of the handle should be less than 2% when the wire clamp is loaded. 4.7 performance 4.7.1 live wrench a) The engagement of the worm and the rack should be minimized and the movement is flexible. b) The minimum opening of the movable body shall be as specified in Table 15. Table 15 units in millimeters Specifications 100 150.200 250 300 375 Minimum opening 11 + 2 0 18.5 + 2 0 23.5 + 2 0 28 + 3 0 33.5 + 3 0 42 + 3 0 c) The clearance of the movable body is shown in Table 16. Table 16 gap specification 100 to 150.200 to 250 300 to 375 Vertical About (max) 1.2 1.2 1.2 1.5 1.5 4.7.2 Pipe Pliers Active Jaws and adjustment nuts should be reduced in clearance and should be flexible. 4.7.3 The combination of the main body and the rotary pole should be firm. 4.7.4 The joint between the carp and the blade and the contact surface of the blade should be narrowed and the movement and opening and closing of the hole and the hole of the main body should be flexible. 4.7.5 The smooth contact surface of the wire clamp joint should be narrowed and the opening and closing should be flexible. 4.8 Shear strength 4.8.1 The central part of the mouth of the carpal jaw clamps the wire specified in Table 17 and the shank cut off the wire by applying a load as specified in Table 17. Test The wire shall comply with the requirements of GB/T 701. Table 17 carp pliers shear force specification Wire Diameter/mm Tolerance/mm Tensile strength δb / mm2 150 2 ± 0.06 310N (31.38kg) 200 2.6 ± 0.08 580N (58.84 kg) 4.8.2 Wire clamp The central part of the edge of the cutting edge of the wire clamped by the table 18, the handle according to the provisions of Table 18 load, the wire cut off. Test The wire shall comply with the requirements of GB/T 701. Table 18 Wire Clamp Shear Force specification Wire Diameter/mm Tolerance/mm Tensile strength δb / mm2 150 2 ± 0.06 980N (100kg) 175 2.6 ± 0.06 1961N (200kg) 200 3.2 ± 0.08 2942N (300kg)

5 test method

5.1 Chemical composition According to the provisions of GB/T 5121. 5.2 Explosion-proof performance According to the provisions of GB/T 23163, according to the product logo express gas selection test gas type. 5.3 Dimensions Use a ruler, vernier caliper, micrometer or measuring instrument. 5.4 Appearance With visual inspection method. 5.5 Hardness According to the provisions of GB/T 230.1. 5.6 Strength 5.6.1 Before opening the wrench test, measure the size of the front end of the opening near the opening. As shown in Figure 15, insert the hexagonal test rod into the opening, Table 19 specifies that the load is applied for 30 seconds and the size of the opening after the same position test is measured. Test bar on the side of the dimensional tolerance in accordance with the provisions of Table 20, hardness 50HRC above. Do not touch the wrench at the edges of the test stick The bottom of the opening. Figure 15 wrench intensity diagram Table 19 Wrench Strength Test Load Specifications 10 13 16 18 21 24 27 30 32 36 41 46 Torque/(N · m) (Kgf · m) 21.6 2.2 45.1 4.6 82.4 8.4 11.2 16.4 23.1 30.0 38.6 44.0 57.0 Table 20 Tolerances on the side dimensions are in millimeters Dimension Interval Minimum Tolerance 6 to 10 below 0-0.040 10 ~ 18 below 0-0.043 18 to 30 or less 0-0.052 30 to 50 or less 0-0.062 5.6.2 Bucket wrench As shown in Figure 16, the square of the bucket wrench is mounted on the square test rod and the other end of the handle is specified in Table 21 After loading for 30 s, the abnormalities and the maximum deformation were determined after each part of the test. As shown in Fig. 16, each part of the test. Square test Rod hardness (20 ~ 30) HRC, size and strength test conditions in accordance with the provisions of Table 21. Figure 16 Schematic diagram of the strength of the lid wrench Table 21 Barrel wrench size and test conditions project Measurement site Torque/(N · m) (Kgf · m) (10) (35) (35) (35) Square test bar on the side size/mm 9 27 38 71 Note. square test rod on the side of the dimensional tolerance ± 0.5mm. 5.6.3 live wrench as shown in Figure 17, insert the test rod in accordance with the provisions of Table 22, the other end of the live wrench applied Table 22 specified load 30s After the determination of the various parts of the test after the exception and the maximum width of the opening deformation. Figure 17 Schematic diagram of live wrench test Table 22 live wrench strength test conditions project specification 100 150.200 250 300 375 Test bar on the side size/mm 10 ± 0.3 17 ± 0.3 21 ± 0.3 26 ± 0.5 32 ± 0.5 41 ± 0.5 Torque/(N · m) (Kgf · m) 29.4 (3) 49 (5) 96 (10) 196 (20) 294 (30) 490 (50) Note. Test rod hardness (50 ~ 60) HRC. Test rod shape for the four corners or hexagonal can be, the length is greater than the thickness of the mouth. 5.6.4 Pipe clamp As shown in Figure 18, insert the test rods specified in Table 23, and at the other end, after applying the specified load in Table 23 for about 1 min, Determination of adjusting nut, jaw test after the break or obvious scars, the various parts of the abnormal. Figure 18 tube pliers strength test schematic Table 23 Test conditions for strength of pipe clamps Specifications.200 250 300 350 450 600 900 Test rod diameter/mm 16 20 25 30 40 52 75 Torque/(N · m) (Kgf · m) (15) (27) (38) (50) (75) (110) (180) Note. The hardness of the test rod is about 80 HRC. 5.6.5 Plum wrenches As shown in Figure 19, insert the hexagonal test rods that are compatible with it, apply the specified load on the other end of the wrench After 30 s, the diagonal dimensions were measured at the same location after the test. Test rods should be fixed, the tolerance of the edge size to meet the provisions of Table 20, the hardness of the 50HRC above. Figure 19 Schematic diagram of the strength test of the wrenches Table 24 Plane wrench strength test conditions Specifications 10 13 16 18 21 24 27 30 32 36 41 46 Torque/(N · m) (Kgf · m) 39.2 82.4 8.4 15.4 19.6 27.2 33.5 5.6.6 carp pliers as shown in Figure 20, at the distance from the top of the jaw 2mm at a diameter of 3.2mm wire, the maximum width of the handle Position the load specified in Table 25 to determine the maximum width of the deformation after the test, the location of any abnormal and permanent deformation. Figure 20 plow pliers strength test schematic Table 25 Test results of carp pliers strength test Specifications Torque/(N · m) (kgf · m) 150 490 (48.05) 200 950 (93.16) 5.6.7 Wire Clamp As shown in Figure 21, a diameter of 3.2 mm is held at a distance of 2 mm from the top of the jaw. The maximum width The position is applied to the load specified in Table 26 to determine whether there is any abnormality and permanent deformation after each part of the test. Figure 21 Schematic diagram of strength test of steel wire tongs Table 26 Steel wire pliers strength test load Specifications Torque/(N · m) (kgf · m) 150 490 (48.05) 175 720 (70.60) 200 950 (93.16) 5.7 performance With the feel and visual method, the size of the vernier caliper test. 5.8 Shear strength 5.8.1 The carpets are clamped at the center of the clamps in Table 27, and the wires are cut off according to the provisions of Table 27. The test wire should meet the requirements of GB/T 701. Table 27 Test conditions for carp shear force specification Wire Diameter/mm Tolerance/mm tensile strength δb/mm2 N kg 150 2 ± 0.06 320 (31.38) 200 2.6 ± 0.08 600 (58.84) 5.8.2 Wire Clamp The central part of the wire is clamped by the load of the provisions of Table 28, The test wire should meet the requirements of GB/T 701. Table 28 Test conditions for shear performance of wire clamps specification Wire Diameter/mm Tolerance/mm tensile strength δb/mm2 N kg 150 2 ± 0.06 980 (100) 175 2.6 ± 0.06 1961 (200) 200 3.2 ± 0.08 2942 (300)

6 inspection rules

6.1 Type of inspection Product inspection points factory inspection and type inspection. 6.2 factory inspection 6.2.1 When the product is shipped, the manufacturer's quality inspection department shall carry out the factory inspection according to this standard. Qualified and accompanied by product quality Certificate, the use of instructions, etc. before leaving the factory. 6.2.2 The factory inspection items are listed in Table 29. 6.3 Type inspection 6.3.1 Type tests shall be carried out in one of the following cases. a) after the formal production, process, design, material changes; b) the development of new products or old products to the factory production; c) when the product is resumed for a long period of time after the production is resumed; d) when a major quality accident occurs in the product; e) annual testing once in normal production; f) When the national quality supervision agency or contract is required to carry out the type inspection as required. 6.3.2 Type inspection items are shown in Table 29. 6.4 Inspection and judgment rules 6.4.1 type inspection should be from the factory inspection after passing the finished product randomly selected samples of the same material, which explosion-proof performance samples should be used with the same Made of a material. 6.4.2 The base of the sample is (10 ~ 50) as a submission for the inspection lot, but not less than 6 for each product. 6.4.3 Determine whether or not to pass the inspection items specified in Table 29. In the event of one of the following conditions, the product is judged to be unqualified. a) there is a serious category A failure; b) that there are two Class B failures; c) there is a Class B and a Class C failure; d) there are three categories C failure. Table 29 Test items No. Test item Quality characteristics Category Requirement Test method Type of inspection Factory test type test Material composition A 4.1 5.1 √ √ Explosion - proof performance 3 Hardness B 4.5 5.5 √ √ 4 strength (wrench class) B 4.6 5.6 - √ 5 Shear strength (pliers) B 4.8 5.8 - √ 6 performance (pull class clamp class) B 4.7 5.7 √ √ 7 edge size accuracy B 4.3 5.3 √ √ 8 Basic dimensions C 4.3 5.3 √ √ 9 Appearance Quality C 4.4 Visual inspection √ √ Product mark A 7.1 Visual inspection √ √ 11 Product packaging C 7.2 Visual inspection √ √ 7 mark, packaging, transportation, storage 7.1 mark The product shall be marked with a permanent explosion-proof tool code Ex, a gas name, a manufacturer's name or a registered trade mark at a distinct location. Ex  explosion-proof tool code Name of gas  Company name or registered trademark Example. Explosion-proof tool Ex, is CH4 or C3H8 gas inspection × × × × × production or registered trademark of beryllium copper alloy explosion-proof tool can be expressed as. ExCH4 ××××× or ExC3H8 ×××××. 7.2 logo Product packaging identification should be consistent with the provisions of GB/T 5305, should indicate the following. a) National standard number of product implementation. b) the grade of the product. c) the name of the enterprise and the registered trademark. d) the details of the enterprise address, telephone, zip code. 7.3 Packaging 7.3.1 The product packaging shall be in accordance with the provisions of GB/T 5305. 7.3.2 The packing of the product shall have the following documents. a) packing list. b) product certification. c) Product manual. 7.4 transportation, storage Products in the transport, storage process should be waterproof, moisture, can not be with the corrosive gas with a storage room.

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