Brief introduction:
Niobium is a gray metal and its melting point is 2468 ℃, boiling point is 4742 ℃ , density is 8.57 g / cm3.
Along with the fast development of our national economy, especially the development in aerospace and energy industry, niobium is used widely.

Niobium pipe

has seamless pipe and seamed pipe.
Material:         RO4200-1， RO4210-2
Diameter:      φ1.0-100mm
Thickness:　0.2-5.0mm
Length:　　 200mm-9000mm
Standard:      As per ASTM B394-98
Purity:            ≧99.9％or 99.95％

Properties of niobium pipe:
Properties of niobium pipe are similar with those of niobium, such as high melting point, good corrosion resistance, compression resistance, abrasion resistance, etc.

Applications of niobium pipe:
Niobium pipe is mainly used as spinning of thin tube blank, thermocouple cannula and other special purposes.

Sanhui Co., Ltd is one of

Chinese manufacturing companies

and we can manufacture niobium pipe according to buyers' special requirements.

Table.1 Chemical composition:

chemistry%
designation	chief component		impurities maximum
	Nb	Fe	Si	Ni	W	Mo	Ti	Ta	O	C	H	N
Nb1	Remainder	0.004	0.003	0.002	0.004	0.004	0.002	0.07	0.01	0.004	0.0012	0.002
Nb2	Remainder	0.005	0.005	0.005	0.01	0.01	0.004	0.1	0.015	0.01	0.0015	0.01

 
　
Table 2. Mechanical requirements (annealed condition)
　

Grade	Tensile strength　 δbpsi (MPa)， ≥	Yield strength　　δ0.2， psi (MPa)，≥	Elongation in 1"/2" gage length， ％， ≥
RO4200-1 RO4210-2	18000 (125)	10500 (73)	25
Special requirements to be agreed on by the supplier and buyer of negotiations