Precision Instrument 316L Stainless Steel Seamless Tube ASTM A269 1/4"

Product Specification

Product Parameters
Product Name: Precision Instrument Tubing
Material: Stainless Steel TP316L
Standard: ASTM A269 / ASTM A213
Size: 1/4 inch (6.35mm)
Wall Thickness: 0.035" / 0.049"
Process: Seamless, Cold Drawn, Bright Annealed
Key Feature: High Purity, Clean ID, Precision Tolerances
Stock Status: In Stock, Ready to Ship

Introduction to Precision Instrument Tubing
Precision instrument tubing is the key connection "blood vessel" in industrial automation control systems, used to connect various sensors, transmitters and valves. It has extremely strict requirements on dimensional tolerances to ensure an absolutely leak-free connection with the ferrule joint. At the same time, its inner hole must be highly clean to prevent tiny contaminants from damaging expensive downstream precision instruments. Our instrument tubes are born to meet these high standards and are designed to ensure the long-term accuracy and stability of your control system.

Material Properties of TP316L
TP316L is the industry standard for high-quality instrumentation tubes. Its molybdenum content provides excellent corrosion resistance to a wide range of industrial chemicals and harsh environments, ensuring long-term system integrity. The low carbon characteristics of the "L" grade effectively prevent intergranular corrosion that may be caused by welding or high temperature exposure, providing a solid material guarantee for the safe and reliable operation of critical control loops.

SMLSCO's Advantage in Inner Bore Cleanliness
We ensure excellent inner bore (ID) cleanliness through advanced bright annealing (Bright Annealed) process. Heat treatment in a controlled atmosphere can form a smooth, oxide-free passivation layer on the inner and outer walls of the tube. Before leaving the factory, each instrument tube is 100% eddy current tested to ensure that the inner wall is free of any defects and residues. This provides the best protection for your precision instruments and avoids measurement errors or equipment damage caused by pipeline contamination.

Quality Control System
We make no compromises in the quality control of precision instrumentation tubes. In addition to implementing a strict three-step inspection system, we also focus on the key characteristics of instrument tubes, including precision tolerance testing of outer diameter, wall thickness, ovality, and hardness control to ensure that the tube can perfectly match the clamp ring of the ferrule. The rigorous quality control process is the cornerstone of our promise to you that every meter of tube meets the high standards of instrument grade.

Application Scenarios
1/4 inch 316L instrument tube is one of the most widely used industrial components in the world. It is widely used in control panels, pneumatic pipelines and fluid analysis systems in the fields of oil and gas, chemical industry, power generation, semiconductor manufacturing and laboratories. Whether connecting pressure gauges, flow meters or control valves, its reliable performance and high cleanliness are necessary to ensure the accurate and safe operation of these key measurement and control equipment.