ASTM A269 TP316L Polished Stainless Steel Welded Tube

ASTM A269 specifies requirements for seamless and welded austenitic stainless steel pipe for general corrosive environments and is commonly used in plumbing and plumbing applications.

Our ASTM A269 TP316L is a low-carbon welded stainless steel pipe suitable for general corrosive conditions and high-temperature applications. It offers excellent corrosion resistance, particularly in chloride environments. It is suitable for use in industries such as chemical, pharmaceutical, and marine, but may not offer the same pressure resistance as seamless pipe. Polishing is available to improve surface quality and appearance. The pipe is polished internally and/or externally using abrasive belts or brushes to achieve the desired surface finish (e.g., 180G, 240G, 320G) and reduce bacterial adhesion, which is critical for food, pharmaceutical, and medical applications.

 

 

Surface Finish (Polish)

The polish level is critical and is usually specified by the user. It is measured in terms of grit (e.g., 180G) or by Roughness Average (Ra) in microinches (µin) or micrometers (µm).

Grit Finish	Typical Ra Value	Application
#4 / 180G	< 0.8 µm / 32 µin	General sanitary applications, architectural
#4L / 240G	< 0.5 µm / 20 µin	Dairy, food processing, brewing
#7 / 320G	< 0.4 µm / 15 µin	Pharmaceutical, cosmetic, high-purity
#8 Mirror	< 0.3 µm / 10 µin	Semiconductor, ultra-high purity (UHP)

Chemical Composition of ASTM A269 TP316L Polished Stainless Steel Welded Tube

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	Fe
SS 316L	0.035 max	2.0 max	1.0 max	0.045 max	0.030 max	16.00 - 18.00	2.00 - 3.00	10.00 - 14.00	68.89 min

 

Physical Properties of ASTM A269 TP316L Polished Stainless Steel Welded Tube

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	At 100°C	At 500°C
316/L/H	8000	193	15.9	16.2	17.5	16.3	21.5	500	740

 

Differences from Similar Tubing
TP316L: Compared to ASTM A213, A213 covers seamless tubing primarily for boiler, superheater, and heat exchanger applications (high-temperature, high-pressure service). A269 is intended for "general service," including pressure service, but also focuses on corrosion resistance.
TP316L: Compared to ASTM A249, A249 covers welded tubing for boilers, condensers, and heat exchangers. It has more stringent testing requirements for weld integrity and high-pressure service than A269.

 

If you have a project need for 316 stainless steel bright annealed tubing, we welcome your order. GNEE has a large inventory of popular products for you to choose from. We offer a variety of practical product forms, including seamless and welded. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service. Email: sales@gneestainless.com