QB/T 2441.2-1999 Cutting pliers End cutting pliers QB/T2441.2-1999 Standard download decompression password: www.bzxz.net

QB/T 2441.2-1999
This standard is based on the requirements of the State Administration of Quality and Technical Supervision to clean up and rectify national standards. The original national standard GB6294.2-1986 "Shearing pliers and top cutting pliers" was changed to an industry standard (this standard was issued by the State Light Industry Bureau [1999] No. 112 document and converted to QB/T 3852.2--1999, the content is the same as before). This standard is based on the original national standard GB6294.2-1986, and refers to the international standard ISO5748:1988 "Twist and cut pliers-top cutting pliers dimensions and test values", and cancels the original national standard "A" and "B" classification of the bending strength and shear force of the pliers handle.
From the date of implementation of this standard, the original national standard GB6294.2-1986 "Shearing pliers and top cutting pliers" will be abolished. This standard is proposed by the Industry Management Department of the State Bureau of Light Industry. This standard is under the jurisdiction of the National Tool Hardware Standardization Center. The responsible drafting unit of this standard is Shanghai Tool Industry Research Institute, and the participating drafting units are Beijing Telecom Tool Factory, Zhejiang Wanda Tool Co., Ltd., etc.
The main drafters of this standard are Lin Meide, Wang Rujie, and Ding Yingming. 713
Light Industry Standard of the People's Republic of China
Cut pliers
Top cutting pliers
QB/T 2441. 2-1999
Replaces QB/T3852.2-1999
This standard refers to and adopts the international standard ISO5748:1988 "Dimensions and test values ​​of one-piece cutting pliers for twist pliers and cut pliers". Scope
This standard specifies the product classification, technical requirements, and test methods of one-piece cutting pliers. This standard applies to top cutting pliers. When there are special requirements for the product, it is not limited by this standard. 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 will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T6290--1999
General technical conditions for twist pliers and shearing pliers
GB/T6291—1999 Test methods for twist pliers and shearing pliers 3 Product classification
3.1 Type
The type of top cutting pliers is shown in Figure 1.
3.2 Basic dimensions
The basic dimensions of top cutting pliers are specified in Table 1.
Approved by the National Light Industry Standard on May 6, 1999
Type of top cutting pliers
Implemented on December 1, 1999
100±5
125±6
140±7
160±8
180±8
200±10
QB/T2441.2-1999
Basic dimensions
Note: If the user has other requirements for the dimensions, they can be determined through negotiation. 3.3 Marking example
The marking of the product should consist of the product name, specification and standard number. Example of marking for 100mm top cutting pliers:www.bzxz.net
Top cutting pliers
4 Technical requirements
4.1 Bending strength
QB/T2441.2--1999.
The bending strength of the top cutting pliers must comply with the provisions of Table 2. Table 2 Bending strength
Shearing performance
The shearing performance of the top cutting pliers must comply with the provisions of Table 3. Table 3 Shearing performance
The top cutting pliers should be able to cut non-ferrous metal wires smoothly. 4.2.2
4.3 Other technical requirements
Other technical requirements for top cutting pliers shall comply with the provisions of GB/T6290. 3
Test method
The test method for top cutting pliers shall comply with the provisions of GB/T 6291. Wsmnx
Load F
Test wire diameter D
Water permanent deformation Smx
Maximum shear force F,
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