Niobium Tube

Baoji Refractory metal Developer Co.,Ltd is one of the leading China niobium tube manufacturers and suppliers,Website:http://www.rmd1994.com, and as a professional company we have productive factory, welcome to wholesale niobium tube, niobium pipe products from us.² Chemical Composition:       Chemistry         %GradeNbImpurities  maxZrTiCNOHTaFeSiWNiMoCrNb1Remainder0.020.0020.010.0150.0150.0010.100.0050.0050.030.0050.0100.002Nb2Remainder0.020.0050.020.050.0250.0050.250.030.020.050.010.0500.01 ² Specification：Φ2mm~Φ100mm×0.2~5.0mm×L<1300 ² Tolerance：Outside diameter,inch (mm)OD tolerance,inch(mm), +/-ID tolerance,inch(mm), +/-Permissible variation in wall thickness,%, +/-≥0.187~0.625(4.7-15.9) 0.004 (0.010) 0.004 (0.010)10≥0.625~1.000(15.9-25.4) 0.005 (0.13) 0.005 (0.13)10≥1.000~2.000(25.4-50.8) 0.0075 (0.19) 0.0075 (0.19)10≥2.000~3.000(50.8-76.2) 0.010(0.25) 0.010(0.25)10≥3.000~4.000(76.2-101.6) 0.0125 (0.32) 0.0125 (0.32)10Note:Special demands on tolerance available.