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By certification 
Baoji Refractory Metal Developer Co.,Ltd is one of the leading China nickel tube manufacturers and suppliers, and as a professional company we have productive factory, welcome to wholesale nickel tube, nickel pipe products from us.
² Chemical Composition:
Grade |
Chief component % |
Impurities max % |
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Ni+Co |
Cu |
Si |
Mn |
C |
Mg |
S |
P |
Fe |
Pb |
Bi |
As |
Sb |
Zn |
Cd |
Sn |
Cr |
||
N4 |
99.9 |
0.015 |
0.03 |
0.002 |
0.01 |
0.01 |
0.001 |
0.001 |
0.04 |
0.001 |
0.001 |
0.001 |
0.001 |
0.005 |
0.001 |
0.001 |
||
N5 |
99.0 |
0.25 |
0.30 |
0.35 |
0.02 |
0.01 |
0.40 |
0.2 |
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N6 |
99.5 |
0.10 |
0.10 |
0.05 |
0.10 |
0.10 |
0.005 |
0.002 |
0.10 |
0.002 |
0.002 |
0.002 |
0.002 |
0.007 |
0.002 |
0.002 |
||
N7 |
99 |
0.25 |
0.30 |
0.35 |
0.15 |
0.01 |
0.40 |
0.2 |
||||||||||
|
Note： NUS N02201 (ASTM B 162) same as N5 (GB/T 2054). NUS N02200 (ASTM B 162) same as N7 (GB/T 2054). |
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² Specification：Φ1.4~78×0.15~4×L<1300mm
² Tolerance：
Outside diameter,inch (mm) |
OD tolerance,inch(mm) |
Permissible variation in wall thickness,% |
＜0.095（2.4） |
±0.002（0.05） |
±10 |
0.095~0.19（2.4-4.8） |
±0.003（0.08） |
±10 |
0.19~0.400(4.8-10) |
±0.004(0.10) |
±10 |
0.400~0.625(10-16) |
±0.005 (0.13) |
±15 |
0.625~1.5(16-38) |
±0.0075 (0.19) |
±10 |
1.5~3(38-76) |
±0.010(0.25) |
±10 |
3~4.2(76-114) |
±0.015(0.38) |
±10 |
4.2~6(114-152) |
±0.020 (0.51) |
±12.5 |
6~6.625（152-168） |
±0.025（0.64） |
±12.5 |
6.625~8.625（168-219） |
±0.031（0.79） |
±12.5 |
Note:Special demands on tolerance available. | ||
