QB/T 2440.1-1999 Twist Pliers Needle Nose Pliers QB/T2440.1-1999 Standard Download Decompression Password: www.bzxz.net

QB/T2440.1--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 GB6293.11986 "Twist Pliers Long-Nose 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/T3851.1--1999, the content is the same as before). This standard is based on the original national standard GB6293.1--1986, and refers to the international standard ISO5745:1988 "Twist Pliers and Shear Pliers Twist Pliers Dimensions and Test Values", and cancels the "A" and "B" classification of the bending strength of the pliers handle in the original national standard. From the date of implementation, this standard will replace GB6293.1-1986. 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; participating drafting units are Beijing Telecom Tool Factory, Jiangsu Jinlu Group Corporation, Zhangjiagang Zhongxin Hardware Tools Co., Ltd., etc. The main drafters of this standard are Lin Meide, Wang Rujie, Jun Xuehai, and Huang Yongxiang. 695
Light Industry Standard of the People's Republic of China
Twist Pliers
Long-nosed Pliers
This standard refers to the international standard ISO5745:1988 "Twist Pliers and Shearing Nippers-1 Specifications
This standard specifies the product classification, technical requirements, and test methods of long-nosed pliers. QB/T2440.1--1999
Replaces QB/T3851.1--1999
-Twist Pliers Dimensions and Test Values".
This standard applies to long-nosed pliers. When there are special requirements for the product, it may not be restricted by this standard. 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 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 needle-nose pliers is shown in Figure 1. According to needs, the front end of the jaws can be made into a curved mouth shape. u(o)
Figure 1 Type of needle-nose pliers
3.2 Basic dimensions
The basic dimensions of needle-nose pliers are specified in Table 1.
Approved by the State Bureau of Light Industry on May 6, 1999
Implemented on December 1, 1999
125±6
140±7
160±8
180±9
200±10
QB/T2440.1---1999
Basic dimensions
Note: If the user has other requirements for the dimensions, they can be determined through negotiation. 3 Marking examples
The marking of the product should consist of the product name, specification and standard number. Example of marking for 125mm needle-nosed pliers:
Nose-nosed pliers 125mm
4 Technical requirements
4.1 Bending strength
QB/T 2440. 1--1999.
The bending strength of needle-nosed pliers must comply with the provisions of Table 2. Wamax
Table 2 Bending strengthbzxZ.net
4.2 Mouth top gap
Xi He F
Permanent deformation Smax
The maximum value of the mouth top gap of needle-nosed pliers in the area not larger than 3mm from the mouth should not exceed 0.08mm. 4.3 Other technical requirements
Other technical requirements for needle-nosed pliers shall comply with the provisions of GB/T6290. 5 Test methods
The test methods for needle-nosed pliers shall comply with the provisions of GB/T6291. 697
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