304 / 304L Stainless Instrumentation Tubing

Instrumentation tubes in a comprehensive range of corrosion-resistant stainless steels and nickel alloys covering outside diameters from (OD) 1.59 to 50 mm (0.0625 to 1.968 in.). All sizes are supplied with smooth surfaces and close dimensional tolerances reducing the risk of leakages when connecting tubes with couplings.

 

This is because pipe sizing often determines overall capacity and volumes while instrumental tubing typically has other considerations such as pressure ratings.

 

As such, stainless steel instrumentation tube sizes are also more precise and typically require greater quality assurance and tighter tolerances than piping.

 

HT PIPE stocks a deep inventory of standard sizes of A 213 / A269 seamless and welded stainless instrumentation tubing. Our inventories primarily consist of the austenitic grades of 304, 304L, 316 and 316L, in a size range from 1/4” to 1/2” outside diameters in straight lengths and coils, where applicable. Material is stocked in the annealed and pickled, bright annealed, mill finish and polished conditions. These are the four most popular austenitic grades of stainless steel which provide excellent overall corrosion resistance.

 

Uses for Instrument Tubing and Stainless Steel Pipes

Piping is designed to move and route the flow of liquids, gasses, and other materials between holding areas, processing areas, and other parts of the intended process.

Instrument tubing is often used alongside these piping systems, allowing the integration of pressure gauges, pressure switches, valves, flow monitors, and other critical instrumentation to assist with safety, automation, and other aspects of piping system operations.

Manufacturing Pipes and Tubes

All tubes will undergo dimensional quality checks for straightness, roundness, wall thickness, and surfaces during manufacturing.

 

While the stainless steel instrumentation tubes are still subject to a strict tolerance, the ability to mass produce most common pipe sizes and types allows for bulk orders and faster delivery.

 

Packaging of Pipes and Tubes

Most pipes are bundled and secured for shipment, whereas tube is often packaged in cardboard tubes for bulk delivery due to their size.

 

However, as the seamless instrumentation tube is often produced in much smaller diameters, coils and rolls are often used to allow for more compact storage and easier transport.

 

Industries and Applications for seamless stainless instrumentation tubing

Nuclear industry, Oil & Gas industry, Aerospace industry, Automotive industry, Railway industry, Chemical & Petrochemical, Conventional Powergen, Shipbuilding

 

Summary

While pipe and seamless instrumentation tubes might look similar at a glance, they are different in many ways.

 

Sizing is approached differently for both product types. Understanding exactly what you need is critical for optimizing spending and proper installation.

 

As tubing is subject to stricter requirements and lower-volume manufacturing processes, it is often more expensive than mass-produced piping when compared by weight.