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Flat Precision High CO Granite Surface Plate Grades 000

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Flat Precision High CO Granite Surface Plate Grades 000

Brand Name : FMS

Model Number : custom-made

Certification : CO

Place of Origin : China

MOQ : 5

Price : Negotiable

Payment Terms : T/T, Western Union, MoneyGram

Supply Ability : 100PC /30days

Delivery Time : 10 work days

Packaging Details : wooden

Material : black granite

application : high precision industry

Tolerance : 00 grade

HS Code : 90179000

name : Flat Precision High Granite Surface Table Grades 000

Measure Method : Manual

Optional accessory : stand for granite surface plate

Standard : DIN876 II

Usage : Laboratory Measuring Tool

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Flat Precision High Granite Surface Table Grades 000

The grading system for granite surface plates is based on the degree of flatness and tolerance that is accomplished. The American Society of Mechanical Engineers (ASME) offers required specifications that go beyond the quality of flatness in order to standardize the use of granite surface plates. These additional qualities include: support point location, surface finish, methods of inspection, repeat measurement accuracy, material properties of granites, and more. However, the three main grades for standard granite surface plates follow the federal specifications for flatness tolerance. Those grades are: Laboratory Grade AA which means the plate has a flatness tolerance equal to (40 + diagonal squared/25) x .000001″ (unilateral), Inspection Grade A which has a flatness tolerance equal to Laboratory Grade AA times two, and Tool Room Grade B which has a flatness tolerance equal to Laboratory Grade AA times four.

(d is the length of the diagonal)

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

Flat Precision High CO Granite Surface Plate Grades 000



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