Marble Levelling Ruler Straight Edge For Measuring
1. Adopted high quality "Jinan Qing" natrual mateirial of granite, granite surface plate is manufactured by mechanical processing and manual polishing
2. It dosen't only own the interest of black gloss, precise construction, and outstanding characters - nice stability, high strength and hardness, etc. But also it is no rust, acid & alkali-proof, no magnetization, nice abrasion resistance and Can keep stable at normal or high tempreture.
3. the main mineral ingredients of granite are pyroxene, anorthose, less olivine, black mica and less magnetite. Aging through hundreds of millions years, the granite can still retain even character, stable, high strength and hardness, and can keep high precision at Heave duty. It is suitable for industrial production and measuring works at laboratory.
Usage:
Lineation, Measurement. Inspection tools
Granite straight edge specification:
Specification (mm) | Line or planeness of working surface
| Parallel between working surfaces | Verticality between side and working surface | |||
Precision grade (um) | ||||||
00 | 0 | 00 | 0 | 00 | 0 | |
500×100×40 | 1.6 | 2.6 | 2.4 | 3.9 | 8.0 | 13.0 |
750×100×40 | 2.1 | 3.5 | 3.2 | 5.3 | 11.0 | 16.0 |
1000×120×40 | 3.0 | 5.0 | 4.5 | 7.5 | 15.0 | 25.0 |
1000×120×60 | 3.2 | 5.3 | 4.9 | 7.9 | 15.6 | 25.8 |
1200×120×60 | 3.69 | 6.2 | 5.4 | 8.5 | 16.4 | 26.5 |
1500×150×60 | 4.2 | 7.2 | 6.5 | 11.0 | 21.5 | 36.2 |
1600×150×80 | 4.4 | 7.4 | 6.6 | 11.1 | 22.0 | 37.0 |
2000×200×80 | 5.4 | 10.0 | 8.1 | 13.5 | 27.0 | 45.0 |
2500×200×80 | 6.0 | 14.3 | 10.2 | 13.8 | 35.0 | 69.6 |
3000×200×100 | 8.0 | 16.0 | 12.0 | 14.0 | 42.0 | 81.2 |
Specification:
1.Specific Gravity(Proportion):3.30g/cm3 or 2970-3070kg/m2
2.Shore Hardness:>70Hs-80Hs
3.Tensile strength:211Kg/cm2
4.Compressive strength:254-254Mpa
5.Linear expansion Coefficient:4.61'10-6/ºC
6.Elastic Modulus:30-50Gpa
7.Water Absorptivity:≤0.13%
8.Flexible grinding capacity:1.27-1.47N/mm2
Product Picture
Our advantage
We are the manufacturer. We can supply all kinds of Granitesurface plate;Granite T-slot plate. We have special engineers and technicians who have 20 years experience.
In our factory, all the products can be costomized, we also can prodece the special sized product according to customer's drawings or discussion by both parties. We can produce the whole machine tools assembly.
Our products are widely exported to the Germany, England, Italy, Australia, Saudi Arabia, South Korea and thailand, etc.
PS: We also offer custom-made surface plates according to the load-bearing and usage required by the clients. Special specifications (500mm×500mm ~ 4000mm×8000mm) are acceptable as per customers' drawings.