ASTM A269 TP316L Instrument Air Distributor Pipe

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of astm a269 tp316l instrument air distributor pipe in China. With abundant experience, we warmly welcome you to wholesale customized astm a269 tp316l instrument air distributor pipe from our factory. For price consultation, contact us.

ISO 9001 ASTM A269 TP316L Tube Manufacturer

With over 18 years of manufacturing and export expertise, GNEE supplies high-quality ASTM A269 TP316L instrument air distributor tubing. Our product range covers outer diameters (OD) from 6 mm to 101.6 mm and wall thicknesses (WT) from 0.5 mm to 8.0 mm, with fixed lengths available up to 12 meters. We offer various surface finishes including BA (Bright Annealed), Pickled & Passivated, and Mirror Polished. Complemented by our one-stop matching instrumentation fittings, our tubing is widely applied in automated instrument air distribution networks within power plants, oil & gas facilities, and chemical industries.

 

 

At GNEE, every single TP316L tube is manufactured from fully traceable heat numbers and undergoes 100% PMI (Positive Material Identification) testing prior to dispatch. The Molybdenum (Mo) content is strictly controlled within 2.0% to 2.5%, and the Carbon (C) content is kept below 0.03%, ensuring full compliance with ASTM A269 and dual-grade 316/316L specifications. Each batch is accompanied by an EN 10204 3.1 Mill Test Certificate (MTC), providing a complete record of chemical composition and mechanical properties.

 

To guarantee a leak-free seal when integrated with Swagelok® and Parker® twin-ferrule compression fittings, our ASTM A269 TP316L tubing undergoes bright annealing to tightly control its hardness between 80–85 HRB. The tensile strength is consistently maintained above 485 MPa, with elongation exceeding 35%, ensuring exceptional formability and fitting compatibility. Furthermore, our solution annealing process completely eliminates internal residual stresses generated during cold drawing, significantly mitigating the risk of stress corrosion cracking or gas leakage during service.

All ASTM A269 TP316L tubing undergoes rigorous degreasing and solvent cleaning to completely remove drawing lubricants, metallic fines, and other contaminants. The internal surface roughness is strictly controlled below Ra 0.8 μm, preventing downstream contamination of sensitive positioners, regulators, and pneumatic control valves. Upon passing final inspection, both ends of the tubes are securely plugged with heavy-duty PE plastic caps to maintain pristine cleanliness during transit and storage.

ASTM A269 316L Stainless Steel Instrument Tubing

TP316L Instrument Air Distribution Tubing

ASTM A269 TP316L Seamless Tube Specification

Stainless Steel 316L BA Pipes and Tubes Chemical Composition:

Bright Annealed SS 316L Pipe and Tubing Mechanical Properties:

ASTM A269 Stainless Steel Tube Tolerances

A269 Instrumentation Tube Weight Chart

Applications of ASTM A269 TP316L Stainless Steel BA Tubing

Pneumatic Control Systems: Supply clean, dry, and pressure-regulated compressed air to pneumatic actuators, control valves, positioners, and other automation instruments.
Pharmaceutical and Food Processing Facilities: Provide clean piping systems that meet requirements for absolute purity and the elimination of metal contamination.
Power Plants: Supply reliable instrument air to critical boiler and steam turbine control panels.

316L SS Instrumentation Tubing Price Per Kg

The price of 316L stainless steel instrumentation tubing typically ranges from $3.50 to $6.00 per kg (or about $3,500 to $6,000 per metric tonne) for bulk mill orders. However, for retail and cut-to-length purchases, the cost can easily exceed $15 to $20 per kg due to fabrication and distribution markups.

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Quality Control

316L pipe PMI Test

Surface roughness inspectio

High-quality sea freight packaging

Cleanliness Assurance: Solvent degreased and dried; all ports sealed with thickened, UV-resistant plastic caps.
Surface Protection: Wrapped in low-chloride protective film to prevent scratches and chloride ion contamination.
Structural Protection: Packed in export-standard fumigated wooden crates featuring custom-cut high-density foam inserts to secure branch valves and fittings, preventing deformation during transport.
Traceability: Each pipe is fitted with a stainless steel tag (Tag No.) to ensure precise alignment with design drawings during on-site installation.

Fumigated wooden crate packaging

Stainless steel signage

FAQ

Are ASTM A269 TP316L steel pipes seamless or welded?
The ASTM A269 standard covers both seamless (SMLS) and welded (WLD) pipe types.
Seamless pipe is generally preferred for high-pressure applications and environments requiring extremely high purity. It is the industry standard for instrumentation gas lines and hydraulic systems.

Can ASTM A269 TP316L tubing be used for bending?
Yes, TP316L in the fully annealed condition is highly ductile and suitable for bending. However, it is important to use a proper mandrel bender and ensure the bend radius is at least 2x to 3x the tube diameter to prevent wall thinning or kinking.

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