ASTM A269 TP316 Stainless Steel Pickled and Annealed Tube

GNEE is a professional supplier of ASTM A269 TP316 stainless steel pickled and annealed tubes, with 18 years of export experience serving more than 70 countries worldwide, certified by ISO 9001, and providing Mill Test Certificates (MTC) and 100% non-destructive testing (NDT) reports for every batch.

 

TP316 tubing contains 2.0–3.0% molybdenum (Mo), significantly improving resistance to chloride pitting and crevice corrosion. After solution annealing treatment (1040–1150°C water quenching), processing stress is eliminated, the austenitic structure is stabilized, and intergranular corrosion is prevented, ensuring long-term dimensional stability and toughness during service. Pickling removes surface oxide scale and hot-working residues, forming a uniform matte gray-white finish, which not only improves corrosion resistance but also provides an excellent base for subsequent polishing or coating.

 

ASTM A269 TP316 stainless steel pickled and annealed tubes include both seamless and welded tubes. SS 316 seamless tubes can withstand pressures up to 42 MPa and operate at temperatures ranging from -200°C to 815°C, making them widely used in high-pressure and high-temperature applications, nuclear power, oil & gas systems, highly corrosive chemical pipelines, and high-purity fluid transportation. TP316 stainless steel welded tubes can withstand pressures up to 16 MPa and are suitable for long-term service temperatures ≤550°C. They can be manufactured into large-diameter thin-wall tubing and are widely applied in shell-and-tube heat exchangers, food and pharmaceutical medium/low-pressure transportation systems, environmental desulfurization equipment, and general industrial fluid transportation pipelines.

 

ASTM A269 TP316 Stainless Steel pipe Chemical Composition

Grade	C	Mn	P	S	Si	Ni	Cr	Mo
316	0.08	2.00	0.045	0.030	1.0	11-14	16-18	2-3
316L	0.035	2.00	0.045	0.030	1.0	10-14	16-18	2-3

 

ASTM A269 TP316 round tube Mechanical Properties

Grade	Tensile Strength(Mpa)	Yield Point(Mpa)	Elongation(%)	Elongation(%)
316L	485	170	35	25
316	515	205	35	25

 

ASTM A269 TP316 Stainless Steel Tubing Dimension Tolerances

OD, in. [mm]	Wall thickness tolerances, in. [mm]	Wall thickness totlerances, in. [mm]	Length, in. [mm]
Up to 1⁄2 [13]	±0.005 [0.13]	±15	Wall thickness tolerances, in. [mm]
1⁄2 to 11⁄2 [13 to 38], excl	±0.005 [0.13]	±10	+1⁄8 [3.2]
11⁄2 to 31⁄2 [38 to 89], excl	±0.010 [0.25]	±10	+3⁄16 [4.8]
31⁄2 to 51⁄2 [89 to 140], excl	±0.015 [0.38]	±10	+3⁄16 [4.8]
51⁄2 to 8 [140 to 203], excl	±0.030 [0.76]	±10	+3⁄16 [4.8]
8to 12 [203 to 305], excl	±0.040 [1.01]	±10	+3⁄16 [4.8]
12 to 14 [305 to 356], excl	±0.050 [1.26]	±10	+3⁄16 [4.8]

 

What is the difference between TP316 and TP316L stainless steel pipes?

The core difference between TP316 and TP316L stainless steel pipes lies in their carbon content and weldability. TP316 has a carbon content of ≤0.08%, while TP316L has a carbon content of ≤0.03%. When welding 316 stainless steel pipes at high temperatures (800°F~1575°F), carbon easily combines with chromium and precipitates, leading to a decrease in the corrosion resistance of the weld edge. The ultra-low carbon TP316L significantly reduces this risk.

 

TP316 Stainless Steel Pickled and Annealed Tube Application

Chemical and Petrochemical Industries: Reactors, heat exchangers, and piping systems resistant to acids, alkalis, and high-temperature media.

Energy Systems: Key pressure-bearing components in boilers, nuclear power plants, and flue gas desulfurization equipment.

Environmental Engineering: Chlorine-resistant pipelines in seawater desalination and wastewater treatment systems.

 

Inquiry Information:

Standard: ASTM A269

Material: TP316 (or 316L)

Type: Seamless or Welded

Specifications: Outer Diameter (OD) x Wall Thickness (WT) (e.g., 1/2" x 0.049")

Surface Finish: Pickled & Annealed

Length: Fixed length or Random length

Quantity

If you require advice regarding corrosion resistance under specific pressure ratings or special environments, please feel free to contact us!

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Testing and Quality

Hardness Testing: Rockwell hardness (typically required ≤ 90 HRB or 192 HV).

Flaring Test: Ensures the pipe end can be flared without cracking.

Flattening Test: Checks the material's plasticity and weld quality (for welded pipes).

Hydrostatic Testing or Eddy Current Testing (NDT): 100% must pass non-destructive testing to ensure the pipe wall is free of leaks or cracks.

High-quality packaging

Standard 316 pipe sizes (e.g., OD 6.35-25.4mm) are available for immediate shipment within 3-7 days. Customized orders typically require 25-45 business days. Packaging strictly adheres to export standards: PE dust caps are added to the pipe ends, each pipe is individually bagged to prevent scratches, and the outer layer is a thickened, fumigation-free wooden crate or hexagonal bundles reinforced with waterproof fabric to ensure zero oxidation and zero deformation of the materials during long-distance sea transport.