Product Overview

ASTM A269 Seamless Stainless Steel Tubing is a high-precision seamless tubing specifically designed for instrumentation and process applications where accuracy, cleanliness, and reliability are critical. Manufactured through advanced cold-drawing processes, this precision stainless steel tube offers excellent dimensional accuracy, smooth internal surfaces, and superior corrosion resistance.

As a professional ASTM A269 seamless tubing supplier, Ganyeah Group provides instrument tubing that meets strict international standards and is widely used in chemical control systems, pharmaceutical production, and semiconductor industries.

What Is ASTM A269 Standard?

ASTM A269 is the standard specification for seamless and welded austenitic stainless steel tubing intended for general service, instrumentation, and precision applications.

Key Requirements of ASTM A269:

Tight dimensional tolerances

Excellent surface quality (inside & outside)

Strict chemical composition control

Mechanical property consistency

Suitable for bending, flaring, and precision installation

ASTM A269 tubing is not primarily designed for high-pressure pipelines, but for systems where precision and cleanliness are essential.

ASTM A269 SMLS Tube

Manufacturing Process

ASTM A269 seamless stainless steel tubing is produced using a cold-drawn seamless process, including:

Seamless tube piercing and hot forming

Cold drawing for precise dimensions

Solution annealing

Pickling & passivation

Straightening and sizing

Final inspection and cleaning

This process ensures small diameter control, uniform wall thickness, and smooth internal surfaces, ideal for precision applications.

Product Features

Small Diameter Capability – Ideal for compact and complex piping systems

High Dimensional Accuracy – Tight OD and wall thickness tolerances

High Cleanliness Level – Smooth inner surface reduces contamination risk

Excellent Corrosion Resistance – Suitable for chemical and clean environments

Good Formability – Easy bending and installation without cracking

Available Material Grades

TP304 / 304L

TP316 / 316L (most common for instrument tubing)

TP321

TP347

High-purity stainless steel available upon request

Technical Specifications

Standard: ASTM A269 / ASME SA269

Product Type: Seamless Stainless Steel Tubing

Manufacturing Method: Cold Drawn

Outside Diameter: Small diameter & customized sizes

Wall Thickness: Precision-controlled

Length: Random or fixed length

Surface Finish: Pickled & passivated, polished (optional)

End Type: Plain end

Applications of ASTM A269 Seamless Stainless Steel Tubing

ASTM A269 seamless tubing is widely used in:

Instrument tubing systems

Chemical process control lines

Pharmaceutical production facilities

Semiconductor manufacturing plants

Clean fluid and gas delivery systems

Quality Control & Testing

Each batch of ASTM A269 seamless stainless steel tubing is tested to ensure consistent quality, including:

Chemical composition analysis

Mechanical property testing

Dimensional inspection

Surface quality inspection

Eddy current or hydrostatic testing (if required)

Third-party inspection services (SGS, TUV, BV) are available upon request.

Why Choose Ganyeah Group?

Over 15 years of experience in stainless steel tubing supply

Stable production of precision seamless stainless steel tubes

Strict compliance with ASTM and ASME standards

Customized solutions for instrumentation and process systems

Reliable delivery and professional technical support

Contact Us

If you are looking for a reliable ASTM A269 seamless tubing manufacturer or supplier, contact Ganyeah Group today. Our team is ready to support your instrumentation, chemical, pharmaceutical, and semiconductor projects with high-quality precision stainless steel tubing.