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u granite straight edge
u Place of Origin: Shen Zhen, China (Mainland)
u Brand Name: Hua An Brand
u Material: Natural Black Granite
u Accuracy: Grade "00" "0","1"
u Flatness test by: Electronic Level Meter
u Test Standard: According to DIN/JIS/GB
Packaging & Delivery
Packed with Delicate Aluminum Case for small size; Wooden case form large size
Delivery time: from one week to one month
Product Specialty:
u Made of high quality Natural Black Granite
u High precision and high stability.
u No rust and anticorrosion.
u Non magnetization.
u Good abrasion resistance.
Physical Property of Natural Black Granite:
u Specific Gravity: 3.03 g/cm3
u Shore Hardness: > 70Hs-80Hs
u Tensile strength: 211Kg/cm2
u Compressive Strength: 245-254Mpa
u Linear Expansion Coefficient: 4.61´10--6/°C
u Elastic Modulus: 30-50Gpa
u Water Absorptive: ≤0.13%
Specifications:
specification | straightness&flatness of working surface | parallelism between working surfaces | squareness between working surface and side surface | overall dimension(mm) | weight/unit(kg) | |||
precision grade(µm) | ||||||||
00 | 0 | 00 | 0 | 00 | 0 | |||
SP400 | 1.6 | 2.6 | 2.4 | 3.9 | 8 | 13 | 400×60×35 | 3.14 |
SP630 | 2.1 | 3.5 | 3.2 | 5.3 | 10.5 | 18 | 630×100×50 | 10.74 |
SP1000 | 3 | 5 | 4.5 | 7.5 | 15 | 25 | 1000×160×50 | 46 |
SP1600 | 4.4 | 7.4 | 6.6 | 11.1 | 22 | 37 | 1600×200×80 | 82.2 |
SP2000 | 5.4 | 9 | 8.1 | 13.5 | 27 | 45 | 2000×250×100 | 159.6 |
Note : non standard products could be made to meet customer's special requirements