Granite rail is used in CMM, drilling & milling machines for PC Board, Laser machines and CNC as a guideway with Grade00 of DIN876 / GB / JIS.
Physical Property of Jinan Black Granite:
Specific Gravity: 3.03 g/cm3
Shore Hardness: > 70Hs-80Hs
Tensile strength: 211Kg/cm2
Compressive Strength: 245-254Mpa
Linear Expansion Coefficient: 4.61′10--6/°C
Elastic Modulus: 30-50Gpa
Water Absorption: ≤0.13%
The packaging and shipping
Wooden case. Working surface is covered with pickling oil and Plastic-lined, others are covered with anti corrosion paint. Complete set to be packed and sealed in a wooded crate with a complete item list displayed on outside of crate.
We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS. You also can choose your own shipping forwarders. About the large products, we choose shipping by sea
We provide the finished project report. Including Contract, Drawings, Quotation Sheet, Proforma Invoice, Technical Description, Manufacturing Progress Control Schedule, Test and Inspection Reports, B/L, Insurance, Commercial Invoice, Packing List, Certificate of Origin.