316L Stainless Steel Seamless Instrument Tube 1/4" OD with 0.035" Wall Thickness ASTM A269

Precision instrument tubing serves as the critical connection component in industrial automation control systems, linking sensors, transmitters, and valves. Our tubing features extremely strict dimensional tolerances to ensure leak-free connections with ferrule joints, while maintaining highly clean inner diameters to protect downstream precision instruments from contamination.

TP316L stainless steel provides exceptional corrosion resistance to industrial chemicals and harsh environments. The low carbon "L" grade prevents intergranular corrosion during welding or high-temperature exposure, ensuring long-term system integrity for critical control applications.

Our advanced bright annealing process creates smooth, oxide-free passivation layers on both inner and outer surfaces. Each tube undergoes 100% eddy current testing to verify defect-free inner walls and dimensional precision, protecting your instrumentation from measurement errors.

• Oil and gas control systems
• Chemical processing instrumentation
• Power generation control panels
• Semiconductor manufacturing equipment
• Laboratory fluid analysis systems
• Pneumatic pipelines and valve connections

• High purity stainless steel construction
• Clean inner diameter for instrument protection
• Precision tolerances for leak-free connections
• Seamless cold drawn manufacturing
• Bright annealed surface finish
• Immediate availability from stock