|
China-USA Surface Roughness Reference Table | |||
China Old Standard (smooth finish) |
China New Standard(roughness) Ra |
US Standard (micron) ,Ra |
US Standard (microinch) ,Ra |
▽ 4 |
6.3 |
8.00 |
320 |
6.30 |
250 |
||
▽ 5 |
3.2 |
5.00 |
200 |
4.00 |
160 |
||
3.20 |
125 |
||
▽ 6 |
1.6 |
2.50 |
100 |
2.00 |
80 |
||
1.60 |
63 |
||
▽ 7 |
0.8 |
1.25 |
50 |
1.00 |
40 |
||
0.80 |
32 |
||
▽ 8 |
0.4 |
0.63 |
25 |
0.50 |
20 |
||
0.40 |
16 |
| Shenzhen Fitom
Metal Co., Ltd. Office address:D01 No.2 Building Longlian Park Longzhu Road
,Xili TownNanshan District ,Shenzhen ,Guangdong China(Mainland) Factory Address:KangTai Road,TongQiao industrial base,TongQiao Town,HuiCheng Area, HuiZhou,Guangdong,China (Mainland) Phone:86-755-26785483/26785484/26784916 Fax:86-755-26784727 Email: fitom@fitom.com Website: www.fitom.com |