Inspection and Measurement Granite Plate

Inspection and measurement Granite plate  

Our granite surface plate refers to the advanced standards of the leading countries, and its flatness tolerance is in accordance with the JB/T 7975-1999 Surface Plate:

Grade 000 =1x(1+d/1000)/μm

Grade  00  =2x(1+d/1000)/μm  

Grade  0   =4x(1+d/1000)/μm  

Grade  1   =8x(1+d/1000)/μm  

(d is the length of the diagonal)

1  High precision  reliable stability resistant to deform and guaranteed accuracy under normal  ambient  temperature.

2  No-rust and anticorrosion.

3  Wear resistance long service life.

4  Any cutting or scraching for working surface does not bring about rough edges which might  influence its  measuring precision.

5  Non magnetization.

6  Glossy surface without sluggishness when the workpieces or tools are moving on it.

• specific gravity 2970-3070 kg/m2
• compressive strength 245-254 MPa
• elastic modulus 1.27-1.47 GPa
• linear expandsibility 4.61X10^-6/oC
• water absorption<0.13%
• shore hardness>70 Hs
•  
•  

• Customized sizes are available
   

  Specification Length × Width × Thickness (mm)	Weight (kgs)	Precision Grade (μm)
  		000	00	0	1
  300 × 200 × 50	17	1.5	3	6	12
  300 × 300 × 50	19	1.5	3	6	12
  400 × 300 × 70	25	1.5	3	6	12
  400 × 400 × 70	48	2	3.5	6.5	13
  630 × 400 × 100	76	2	3.5	7	14
  630 × 630 × 100	155	2	4	8	16
  800 × 500 × 130	156	2	4	8	16
  1000 × 630 × 130	284	2.5	4.5	9	18
  1000 × 750 × 150	338	2.5	5	9	18
  1000 × 1000 × 150	450	2.5	5	10	20
  1600 × 1000 × 200	963	3	6	12	24
  2000 × 1000 × 200	1200	3.5	6.5	13	26
  1600 × 1600 × 300	2312	3.5	6.5	13	26
  2000 × 1600 × 300	2890	3.5	7	14	28
  2500 × 1600 × 300	3612	4	8	16	32
  3000 × 2000 × 500	9030	4.5	9	18	36
  4000 × 2000 × 500	12040	5.5	11	22	44
  6000 × 2000 × 700	25284	7.5	15	30	60