Quality Index £º
A, Common Slabs: Normally , the quality index include the tolerance of the profile size , Un-plate , Angle, and the color view etc. and we clarify them into them into 3 classes.¡ªfirst class or A class (Exactly situation) , 2 nd Class or B class(Perfect Situation), 3 rd Class or C Class ( Check Our situation only).
B, Curve Panels ( Hollow Pillars) : The quality index include the tolerance of the profile size, linear, and the shape profile, and the color view etc. Just as the flat panel, we individual them into 3 classes.¡ªfirst class or A class (Exactly situation) , 2 nd Class or B class(Perfect Situation), 3 rd Class or C Class ( Check Our situation).
C, The main parameter as below £º
1, The standard of slabs and Cut To size
A, The Tolerance of the Profile Size
Unit: mm
£¨ Items £© |
Polished & Honed |
Roughed |
Selected |
Standard |
Commercial |
Selected |
Standard |
Commercial |
Length & Width |
-1.00¡ª0 |
-1.00¡ª0 |
-1.50¡ª0 |
-1.00¡ª0 |
-1.00¡ª0 |
-1.50¡ª0 |
Thickness |
¡Ü 12 |
¡À 0.50 |
¡À 1.00 |
-1.50-- 1.00 |
----- |
----- |
------ |
£¾ 12 |
¡À 1.00 |
¡À 1.50 |
¡À 2.00 |
-2.00¡ª1.00 |
¡À 2.00 |
-3.00¡ª2.00 |
B, The Tolerance of Scraggy (Cave or convex )
Unit: mm
£¨ Length £© |
A class |
B Class |
C Class |
¡Ü 400mm |
0.20 mm |
0.35 mm |
0.50 mm |
£¾ 400 ¡Ü 800mm |
0.50 mm |
0.65 mm |
0.80 mm |
£¾ 800mm |
0.70 mm |
0.85 mm |
1.00 mm |
C, The Tolerance of the Angle
Unit: mm
Length |
A class |
B Class |
C Class |
¡Ü 400 |
0.30 |
0.40 |
0.50 |
£¾ 400 |
0.40 |
0.50 |
0.70 |
D ¡¢ The Appearance Index
Unit: Points
shortage |
Inspection Items |
Granites |
Marbles/onyx |
Shining |
Shine degree |
¡Ý 80 ¡ã |
¡Ý 70 ¡ã¡¡¡¡ |
Background color |
The different color situation showed in whole project or order |
Similar and Harmonious |
Similar and Harmonious |
(Note: SL=Selected, ST=Standard, Co=Commerical) |
SL |
ST |
CO |
SL |
ST |
CO |
Cracks |
The Allow Range: Longer than 10mm ,
Position: Showed on the facing surface |
0 |
0 |
0 |
0 |
1 |
2 |
Edge Broken |
The Broken Part size range within : Length 4mm ¨C 10mm x Width 1.0mm -- -1.5mm
Position: Showed on the facing surface |
0 |
1 |
2 |
0 |
1 |
2 |
Corner Broken |
The Allowance size range within: 2.0¡ª 3.0mm x 2.0¡ª 3.0mm , Smaller than 2.0 x 2.0mm are out of inspection |
0 |
1 |
2 |
0 |
1 |
2 |
Abnormal Color Spot |
The Abnormal color spot size range is : Marble 30.0x 20.0mm ,(smaller the 6.0CM 2)
Granite 30.0 x 30.0mm (smaller than 9.0 CM 2 ) |
1 |
2 |
3 |
0 |
1 |
2 |
Abnormal color veins |
Longer than 40.0mm |
1 |
2 |
3 |
0 |
1 |
2 |
Nature Holes |
Smaller than 2.0 x 2.0mm |
-- |
-- |
-- |
0 |
Harmonious |
Harmonious |
Glue Situation |
The Imaging of the glue are harmonious to the background |
0 |
0 |
0 |
1 |
2 |
3 |
Note: The Travertine are Not included in above |
E ¡¢ The Physical Characters
Inspection Items |
Allowance |
Marble |
Granite |
Density (g/cm3) |
¡Ý 2.60 |
¡Ý 2.56 |
Water Absorbing % |
¡Ü 0.50 |
¡Ü 0.60 |
Compressing MPa |
¡Ý 50.0 |
¡Ý 100.0 |
At Dry |
Bending Strength £¨ MPa £© |
¡Ý 7.0 |
¡Ý 8.0 |
Water |
2 ¡¢ The standard of Tiles and Composite Tiles
Just As same as Slabs or flat panels
But attention please £º
A ¡¢ The tiny damages of the back edges of the Granite Tiles is allowanced cause by the stone character limited.
B ¡¢ All the edges of the tile at the 1x 1mm beveled situation;
C ¡¢ The strength of the Composite Glue just match to the industrial standard.
D ¡¢ The general usage of the composite tiles is the Floor and the shorter wall ¡£
3 ¡¢ The indexes of the tops ( Pre-fabrication or completed tops)
A ¡¢ The main index as same as the Slabs £»
B ¡¢ The standard of the laminated edges £º One crack could happened at Granite tops, and 2 cracks could existed in the marble tops, and all the connection or cracks have to be nature and smoothly at the feeling;
C ¡¢ All the shaped edges of the curved shape have to be smoothly;
D ¡¢ The thickness of glue showed on the laminated edges of the tops have to less than 0.3mm ;
E ¡¢ All the color of the tops, which consist of several parts , have to be similar between any 2 connected parts of them ;
4 ¡¢ The standard of the Hollow Pillars
A ¡¢ The allowance Tolerance of the Profile Size
Unit: mm
Items |
Marble |
Granite |
selected |
Standard |
Commercial |
Selected |
Standard |
Commercial |
Bowstring Length |
-1.00¡ª0 |
-1.50¡ª0 |
-- |
-1.00¡ª0 |
-1.00¡ª0 |
-- |
Height |
-1.00¡ª0 |
-1.50¡ª0 |
-- |
|
|
-1.50¡ª1.00 |
Arc Profile |
0.80 |
1.00 |
1.20 |
0.80 |
1.00 |
1.20 |
Joint Angle |
Less than theoretics |
Less than theoretics |
Less than theoretics |
Less than theoretics |
Less than theoretics |
Less than theoretics |
Linearity of Heig ht |
¡Ü 800 |
0.60 |
0.80 |
1.00 |
0.80 |
1.00 |
1.20 |
£¾ 800 |
0.80 |
1.00 |
1.20 |
1.00 |
1.20 |
1.50 |
Un-flat (Tops & Bottom) |
0.40 |
0.60 |
0.80 |
0.40 |
0.60 |
0.80 |
Thickness |
¡À 1.00 |
¡À 1.00 |
-1.50-- 1.50 |
¡À 1.00 |
¡À 1.00 |
-1.50-- 1.50 |
Note: The data above listed for Polished and Honed only; If Rough finishes inquiry, then the Tolerances need to be confirmed base on discussing;
D ¡¢ The standard of the appearance
Unit: Points
shortage |
Inspection Items |
Granites |
Marbles/onyx |
Shining |
Shine degree |
¡Ý 80 ¡ã |
¡Ý 70 ¡ã¡¡¡¡ |
Background color |
The different color situation showed in whole project or order |
Similar and Harmonious |
Similar and Harmonious |
(Note: SL=Selected, ST=Standard, Co=Commercial ) |
SL |
ST |
CO |
SL |
ST |
CO |
Cracks |
The Allow Range: Longer than 10mm ,
Position: Showed on the facing surface |
0 |
0 |
0 |
0 |
1 |
2 |
Edge Broken |
The Broken Part size range within : Length 4mm ¨C 10mm x Width 1.0mm -- -1.5mm
Position: Showed on the facing surface |
0 |
1 |
2 |
0 |
1 |
2 |
Corner Broken |
The Allowance size range within: 2.0¡ª 3.0mm x 2.0¡ª 3.0mm , Smaller than 2.0 x 2.0mm are out of inspection |
0 |
1 |
2 |
0 |
1 |
2 |
Abnormal Color Spot |
The Abnormal color spot size range is : Marble 30.0x 20.0mm ,(smaller the 6.0CM 2)
Granite 30.0 x 30.0mm (smaller than 9.0 CM 2 ) |
1 |
2 |
3 |
0 |
1 |
2 |
Abnormal color veins |
Longer than 40.0mm |
1 |
2 |
3 |
0 |
1 |
2 |
Nature Holes |
Smaller than 2.0 x 2.0mm |
-- |
-- |
-- |
0 |
Harmonious |
Harmonious |
Glue Situation |
The Imaging of the glue are harmonious to the background |
0 |
0 |
0 |
1 |
2 |
3 |
Note: The Travertine are Not included in above |
5 ¡¢ The standard of the Solid Columns
Reference the details of Curve Panel standards which listed in Item 4#.
6 ¡¢ The standard of the Moulding
A ¡¢ Color and Veins: All the raw material used into the same order have to be similar or harmonics;
B ¡¢ Physical Indexes: Refer to the related details of Slabs
C ¡¢ Profile Tolerance: Within 0.30mm (from the products to the profile template)
D ¡¢ Linearity error : Within 0.5mm / Linear Meter
E ¡¢ Finishing: Match to the inquiry or the clients' samples;
7 ¡¢Water-jet Polished Medallion Quality Satandard
A ¡¢ Shining Degree: > or =80 degree;
B ¡¢ Color and veins: Normal standard above, and all the parts of one kind
of material, which showed in the same medallion ,have to be controlled in the same or similar each other;
C ¡¢ The profile Tolerance: Within -0.5 ¨C 1.00mm at the Diameter, and 0- -0.3mm at the Joints, linearity and the angles .
D ¡¢ Any Abnormal color ,veins, obviously Glue, Crack, Broken showing are out of the medallion inspection standard allowance.
The standard of the Water-jet Borders
The basic inspection details as same as the Polished Medallion;
The standard linear error of the edges is: 0.3mm ;
The profile size error : Length -0.5 --- 0.0 mm , Width -0.3-- -0.0 mm , Thickness -0.3¡ª 0.2 mm ;
The shortage allowance : Ref. to the details of inspection standard of Polished Medallion . |