This standard replaces GB 4141.2-84. This standard specifies the type, size and technical requirements of curved handles. JB/T 7270.2-1994 Curved handles JB/T7270.2-1994 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T7270～7277-94
Operating parts
Published on June 18, 1994
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1995
Mechanical Industry Standard of the People's Republic of China
Subject content and scope of application
This standard specifies the type, size and technical requirements of curved handles. 2 Reference standards
JB/T7276 Operating parts marking method
JB/T7277 Technical conditions for operating parts
Type and size
The type and size of curved handles shall be as specified in Figure 1 and Table 1. B
Approved by the Ministry of Machinery Industry on June 18, 1994
JB/T 7270.294
Implemented on January 1, 1995
Basic dimensions
Limit deviation
JB/T7270.2—94
Note: Upon consultation between the supplier and the buyer, the hexagon socket may not be provided at the end of the B-type handcart. 4
The marking method shall comply with the provisions of JB/T7276. Marking example
Weight per piece
Type A, d=6, L=50, l=10, 35 steel, sandblasted chrome-plated curved handle is marked as: handle 6×50×10JB/T7270.29JB/T7270.2
Type B, d,=M6, L=50, 35 steel, sandblasted chrome-plated curved handle is marked as: handle BM6×505Technical requirements
5.1Material
35 steel; Q235-A.
5.2Surface treatmentwww.bzxz.net
Sandblasted chrome plating (PS/D·Cr): polished (D·L,Cr); oxidation (H·Y). Other technical requirements shall comply with the provisions of JB/T7277. 5.3
Additional notes:
This standard is proposed and managed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Machinery Standardization Research Institute of the Ministry of Machinery Industry, and Shanghai Machine Tool Accessories Factory No. 6 and Shanghai Machine Tool Factory participated in the drafting. According to the Appendix 3 of the State Technical Supervision Bureau's Document No. (1992) 549, "National Standards Adjusted to Industry Standards", this standard replaces GB4141.2-84.
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