Stainless Steel Pipe

• Material: Stainless steel, other materials can be customized for production.
• Size: 3 mm-50 mm, 1/8″-2″, other sizes can be customized for production.
• Working temperature: -198°C to 537°C (-325°F to 1000°F)
• Pickled, bright annealed, or precision cold-worked with subsequent bright annealing, with a mechanically polished external surface.
• Custom lengths available according to customer’s specific requirements.

Stainless Steel Pipe Product Overview

SIYelectric Stainless Steel Pipe is designed for industrial fluid transfer, process piping, utility lines, pressure systems, and equipment connection applications.

Manufactured from stainless steel materials such as 304SS, 316SS, and 316LSS, the pipe provides good corrosion resistance, mechanical strength, and long-term durability in demanding working environments. Depending on project requirements, stainless steel pipe can be supplied according to ASTM A269, ASTM A213, or equivalent specifications.

Compared with small-size instrumentation tubing, stainless steel pipe is more commonly used for process pipelines, equipment piping, fluid transfer lines, utility systems, and larger-diameter industrial connections. It can also be used together with valves, fittings, flanges, manifolds, and pressure instruments in complete process systems.

Difference Between Stainless Steel Pipe and Instrumentation Tubing

Item	Stainless Steel Pipe	Instrumentation Tubing
Main Use	Process piping and fluid transfer	Instrument impulse lines and analyzer tubing
Typical Connection	Threaded, welded, flanged, or fittings	Compression tube fittings
Common Application	Process lines, utility lines, equipment piping	Pressure transmitters, DP transmitters, analyzers
Size Reference	Usually based on nominal pipe size	Usually based on outside diameter
Installation Focus	Flow capacity and mechanical strength	Sealing accuracy and instrument response

Compatible Instruments and Components

SIYelectric stainless steel pipe can be used with:

Pressure transmitters
Differential pressure transmitters
Pressure gauges
Pressure switches
Gauge valves
Needle valves
Ball valves
Check valves
Instrument manifolds
Pipe fittings
Tube fittings
Flanges
Sampling systems
Process skids
Hydraulic and pneumatic equipment

For pressure measurement systems, stainless steel pipe may be used as part of the process connection, instrument standpipe, impulse piping, isolation valve assembly, or pressure tapping connection.

Typical Application Scenarios

1. Process Fluid Transfer Lines

Used to transport compatible liquids, gases, steam, condensate, chemicals, water, oil, and other industrial media in process plants and equipment systems.

Typical applications include:

Chemical transfer lines
Utility water pipelines
Steam and condensate lines
Gas distribution lines
Process equipment piping

2. Pressure Instrument Connection Lines

Used in pressure measurement assemblies where a stainless steel pipe section is required between the process tapping point, isolation valve, gauge valve, manifold, or pressure instrument.

It can support installations involving:

Pressure gauges
Pressure transmitters
Pressure switches
Differential pressure transmitters
Gauge valves and needle valves
Instrument manifolds

3. Chemical and Petrochemical Systems

Suitable for chemical plants, petrochemical units, dosing systems, sampling systems, and auxiliary process pipelines where corrosion resistance and pressure performance are important.

For corrosive or aggressive media, the correct stainless steel grade, wall thickness, sealing method, and corrosion allowance should be confirmed before selection.

4. Oil & Gas and Energy Applications

Used in oil & gas production, refining, gas processing, energy plants, boiler auxiliary systems, pressure systems, and utility piping.

For high-pressure, high-temperature, flammable, or hazardous media, material certification, pressure rating, welding procedure, and inspection requirements should be reviewed according to project specifications.

5. Laboratory, Analyzer, and Test Systems

Used in pilot plants, laboratory test loops, analyzer shelters, gas panels, pressure test systems, and experimental equipment where stainless steel piping is required for stable fluid or gas transfer.

Material and Standard Options

Item	Typical Options
Material	304SS, 316SS, 316LSS
Standards	ASTM A269, ASTM A213, or equivalent
Pipe Type	Seamless or welded, depending on requirement
Surface Condition	Annealed / pickled / polished options available
Connection Methods	Threaded, welded, flanged, or fitting connection
Typical Use	Process piping, utility lines, equipment piping, pressure systems

Key Benefits

Feature	Benefit
Stainless steel construction	Provides corrosion resistance and mechanical strength
304 / 316 / 316L options	Allows selection for different media and environments
ASTM standard options	Supports project documentation and specification requirements
Seamless or welded options	Matches different pressure and installation needs
Wide connection compatibility	Works with valves, fittings, flanges, manifolds, and instruments
Suitable for process systems	Supports liquid, gas, steam, oil, water, and chemical service
Industrial durability	Suitable for demanding plant and equipment environments

Selection Notes

Before selecting stainless steel pipe, confirm:

Pipe size or nominal diameter
Wall thickness or schedule
Material grade, such as 304SS, 316SS, or 316LSS
Seamless or welded requirement
Applicable standard, such as ASTM A269 or ASTM A213
Working pressure
Working temperature
Process medium
Corrosion requirement
Connection method, such as threaded, welded, or flanged
Required certificates or inspection documents
Whether it is used for process piping, pressure instrument connection, sampling line, utility line, or equipment piping

For pressure transmitter and gauge installations, pipe size, connection type, isolation valve arrangement, venting, draining, and installation accessibility should be considered during selection.

Main Advantages

Suitable for process piping, utility systems, pressure systems, and equipment connections.
Can be used with pressure transmitters, pressure gauges, valves, manifolds, flanges, and fittings.
Stainless steel 304, 316, and 316L options support different corrosion and project requirements.
ASTM A269, ASTM A213, or equivalent specification options are available.
Suitable for chemical, petrochemical, oil & gas, power, laboratory, analyzer, hydraulic, and industrial systems.
Available in different sizes, wall thicknesses, materials, surface conditions, and connection types according to project requirements.

Stainless Steel Pipe