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∷ ∷ Type,grade and method about polish tubes & pipes of TINSI-STEEL
TINSI-STEEL generally there are three type method of polished tubes & pipes:
1.polish base on open annealing and pickling industry tube of seamless tube,
2.polish base on cold-rolled-tube or cold-precision-rolled bright annealing tubes&pipes. some time without bright annealing（seamless sanitary tube).
3. polish base on 2B surface of welded tube(welded sanitary tube).
Also TINSI-STEEL there are totally four type method process of polished tubes&tubes:
1.Polishing
2.Brushing.
3.Buffing.(1-3:Mechanical Polishing-MP)
4.Electrolytic(EP).
And TINSI-STEEL customized available accroding difference requirement to be excellent quality with rich experience and exquisite workmanship.
Table . Surface finish grade instruction of TINSI-STEEL tubes pipes
|
GRADE |
SURFACE |
INSTRUCTION OF GENERAL PROCESS |
|
EP
|
|
(Ra0.1-0.4 , Grit 300-500) Process-Electrolytic polished Finish precision rolled tube and mechanical Polishing all cracks and pit as base material then EP.TINSI-STEEL electrolytic polishing tube inner maximum surface roughness of Ra 0.1-0.2µm available as a good solution be used in high requirement of flatness inner. |
|
BA/2B
|
|
(Ra0.2-0.6 , Grit 250-350) Process -cold-worked finish -cold-precision-rolled finish - Bright annealing base on above two cases
|
|
MP
|
|
(Ra0.2-0.8 , Grit 200-350) Process- Mechanically MP base on AP:inner Ra0.6-0.8µm;Outside Ra0.2-0.6µm MP base on BA:inner Ra0.2-0.6µm;Outside Ra0.2-0.6µm Different requirements use different polishing grades.
|
|
AP
|
|
(Ra1.0-3.2 , Grit 100) Process- Annealed and Pickled industrial tubes of annealed and pickled condition. |
Table Surface finish cross reference chart
|
SURFACE FINISH CROSS REFERENCE CHART |
|||||||
|
GRIT |
USA |
COMMON |
Ra µ-In |
Ra µ-m |
Rmax µ-In |
Rmax |
ISO-1302 |
|
|
|
|
2000 |
50 |
7875 |
200 |
N12 |
|
|
|
|
1000 |
25 |
3940 |
100 |
N11 |
|
|
|
|
500 |
12.5 |
1968 |
50 |
N10 |
|
60 |
#1 |
Mill Plate |
250 |
8.3 |
985 |
25 |
N9 |
|
|
|
|
125 |
3.2 |
492 |
12.5 |
N8 |
|
80 |
#2 |
Satin Sheet |
70 Max.40 --60 |
|
|
|
|
|
|
|
|
63 |
1.6 |
|
6.3 |
N7 |
|
100 |
#3 |
|
52 |
|
|
|
|
|
120 |
#4 |
Commercial #4 |
40 - 60 typ. |
|
|
|
|
|
150 |
#4 |
3A Sanitary Finish |
42 Max.30 --35 |
|
|
|
|
|
|
|
ANSI #4 Sanitary Finish |
32 |
0.8 |
126 |
3.2 |
N6 |
|
180 |
#4 |
|
30 Max.20 --30 |
|
|
|
|
|
200 |
#4S |
Biothech Finish |
25 Max.20 --25 |
|
|
|
|
|
240 |
#6 |
|
15 --20 |
|
|
|
|
|
300 |
|
|
16 |
0.4 |
63 |
1.6 |
N5 |
|
320 |
#7 |
|
12 Max.8 --12 |
|
|
|
|
|
|
|
|
12 |
0.3 |
42 |
1.5 |
|
|
|
|
|
8 |
0.2 |
31 |
0.8 |
N4 |
|
400 |
#8 |
Mirror Finish |
4 --10 |
|
|
|
|
|
500 |
#8 |
Supermirror Finish |
< 4.3 --8 |
|
|
|
|
|
600 |
#8 |
Supermirror Finish |
4 |
0.1 |
16 |
0.4 |
N3 |
|
|
|
|
2 |
0.06 |
8 |
0.2 |
N2 |
|
|
|
|
1 |
0.025 |
4 |
0.1 |
N1 |
Contact: Hyman.C
Phone: 15825401620
Tel: +86-0577 56666518
Email: info@tinsi-steel.cn
Add: factory address: no272,Yongning West Road,Xiping Street, Songyang,Li shui,China
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