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E-mail
hbbtpb6688@163.com
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Phone
13643379658
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Address
Qianlitun, Haocun Town, Botou City, Cangzhou City, Hebei Province
Botou Zhengchuang Machinery Equipment Manufacturing Co., Ltd
hbbtpb6688@163.com
13643379658
Qianlitun, Haocun Town, Botou City, Cangzhou City, Hebei Province
The manufacturing standard for granite square boxes is based on the national standard JJG194-92.
The purpose of granite square box is to measure and inspect the parallelism and perpendicularity of Jingmi workpieces, as well as the three-dimensional marking of Jingmi workpieces by fitters.
Granite square box packaging: Granite square boxes are generally packaged in wooden boxes (or according to user requirements)
Granite square box material: The granite square box is made of "Jinan green" as raw material, processed by machinery and hand precision grinding. Black luster, structured jingmi, uniform texture, good stability, high strength and hardness, able to maintain high precision under heavy load and general temperature, and has the advantages of non rusting, acid and alkali resistance, wear resistance, non magnetization, and invariance.
Granite square box specifications: (special specifications require customization)
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Square box specification (mm) |
Flatness of working face relative to parallelism of working face |
Verticality between working faces |
The difference between each pair of parallel gauge H.W |
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|
Granite square boxAccuracy level (mm) |
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|
00 |
0 |
00 |
0 |
00 |
0 |
|
|
100×100×100 |
0.001 |
0.002 |
0.001 |
0.002 |
0.001 |
0.002 |
|
150×150×150 |
0.0015 |
0.003 |
0.001 |
0.002 |
0.0015 |
0.003 |
|
200×200×200 |
0.002 |
0.004 |
0.0015 |
0.003 |
0.002 |
0.004 |
|
300×300×300 |
0.003 |
0.006 |
0.0015 |
0.003 |
0.003 |
0.006 |
|
400×400×400 |
0.004 |
0.008 |
0.002 |
0.004 |
0.004 |
0.008 |
|
500×500×500 |
0.004 |
0.008 |
0.002 |
0.004 |
0.004 |
0.008 |