The flat granite surface plate is a precision measuring tool made of natural stone material. It
is mainly used to inspect the instrument, precision tool,
mechanical parts. Its raw material is got from the qualified
lithosphere, which has gone through the natural aging for eons of
Botou Yuanwang Mechanical Equipment sales Co.,LTD , is specialized
in producing granite inspection surface plate , measuring tools and
granite mechanical components of the standardized company.
The company is located in the beautiful city – Cangzhou ,the
factory covers an area of 40,000 square meters, is equipped with
machining, precision Constant temperature processing, maintenance,
measuring and testing, such as workshops, with a total area of
5,000 square meters. The company is well found in machining
equipment and equipped with such advanced testing instruments as
electronic level so as to realize the computer data processing.it
has a lot of excellent employees with high quality.
1. Adopted high quality "Jinan Qing" natrual mateirial of granite,
granite surface plate is manufactured by mechanical processing and
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.
Main usage:Lineation, Measurement. Inspection tools
1.Specific Gravity(Proportion):3.30g/cm3 or 2970-3070kg/m2
5.Linear expansion Coefficient:4.61’10-6/℃
6 .Elastic Modulus:30-50Gpa
8.Flexible grinding capacity:1.27-1.47N/mm2