ASTM / ASME 269 Pipes

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Stainless Steel Pipes

ASTM / ASME 269 Pipes

Reliable Steel one of the leading Manufacturers, Supplier and Exporters of high quality ASTM A269 stainless steel seamless pipes. We manufacture these using optimum quality material as per their specified details. These ASME SA269 Stainless Steel Pipes are widely used in various application industry such as textile, chemical and marine industries. We offer these ASMT A269 / ASME SA269 stainless steel SMLS Pipes at competitive prices in the market.

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ASTM A269 Seamless Stainless Steel Tubing is used for low temperature and high temperature services. These pipes could be made from austenitic steel types under electric resistant weld, electric fusion weld or seamless cold drawing mechanisms. The SA269 Tubing can also have different finishes and can be heat treated. The SA 269 Tp 316 is more corrosion resistant than the 304 material types and it is used in applications with high pressures and high temperatures as well as low pressure and low temperatures. Therefore the SA 269 Tp 304 and the ASTM A269 Tp316l material grade pipes have different schedules. These schedules correspond to different wall thickness corresponding to different nominal diameters.

ASME SA 269 Seamless Tube sizes

Size: 3/8'' X 0.035''
Length: 20FT / 6096MM
Finish: BA, Bright Annealed

Key Characteristics

  • Type: Unlike SA 213, which is primarily seamless, SA 269 covers both seamless and welded tubing options.
  • Material: The specification deals exclusively with austenitic stainless steel grades (e.g., 304, 304L, 316, 316L).
  • Applications: It is a general service specification used in applications where both corrosion resistance and varying temperature performance are necessary, such as instrumentation lines, heat exchangers, and general process piping in chemical, petrochemical, and textile industries.
  • Dimensions: The standard typically covers tubing with a nominal-wall thickness of 0.020 in. (0.51 mm) and heavier, and an inside diameter of 1/4 in. (6.4 mm) and larger, with flexibility in various forms like round, square, or rectangular.
  • Heat Treatment: All SA 269 tubes must be furnished in a heat-treated condition to ensure the proper mechanical properties and microstructure.

Common Grades and Properties

Grade

Material Type

Key Properties

Common Uses

TP304

Austenitic SS

Good general corrosion resistance, excellent formability, suitable for a wide range of temperatures.

General industrial use, food processing, architectural fittings.

TP304L

Austenitic SS (Low Carbon)

Lower carbon content for enhanced intergranular corrosion resistance after welding (prevents carbide precipitation).

Heavy gauge welded components where post-weld annealing is impractical.

TP316

Austenitic SS

Superior corrosion resistance (especially pitting) due to molybdenum content, high tensile strength.

Marine environments, hydraulic systems, chemical processing, heat exchangers.

TP316L

Austenitic SS (Low Carbon)

Combines 316's corrosion resistance with 304L's immunity to sensitization from welding.

Highly corrosive environments, medical equipment, laboratory benches.

ASME SA269 Tubes Mechanical Properties

SS Grade Heat treatment Temperure F (C) Minimum Hardness
Brinell Rockwell
TP304 Solution 1900 (1040) 192HBW/ 200HV 90HRB
TP304L Solution 1900 (1040) 192HBW/ 200HV 90HRB
TP316 Solution 1900(1040) 192HBW/ 200HV 90HRB
TP316L Solution 1900(1040) 192HBW/ 200HV 90HRB
TP321 Solution 1900(1040) F 192HBW/ 200HV 90HRB
TP347 Solution 1900(1040) 192HBW/ 200HV 90HRB

ASTM A269 Standard Tubing Chemical Composition

SS Grade ASTM A269/SA 269 Chemical Composition % Maximum
C Mn P S Si Cr Ni Mo N B Nb Ti
TP304 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 --- --- --- ---
TP304L 0.035 2.00 0.045 0.030 1.00 18.0-20.0 8.0-12.0 --- --- --- ---
TP316 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 2.00-3.00 --- --- ---
TP316L 0.035 D 2.00 0.045 0.030 1.00 16.0-18.0 10.0-15.0 2.00-3.00 --- --- ---
TP321 0.08 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 --- --- --- 5C -0.70
TP347 0.08 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 10C -1.10 ---

SA269 tubing Tolerance

OD, inch OD Tolerance inch(mm) WT Tolerance % Length Tolernace inch(mm)
+ -
≤1 /2 ± 0.005 ( 0.13 ) ±15 1 /8 ( 3.2 ) 0
> 1 /2~1 1 /2 ±0.005(0.13) ±10 1 /8(3.2) 0
> 1 1 /2~< 3 1 /2 ± 0.010(0.25) ±10 3 /16(4.8) 0
> 3 1 /2~< 5 1 /2 ± 0.015(0.38) ±10 3 /16(4.8) 0
> 5 1 /2~< 8 ± 0.030(0.76) ±10 3 /16(4.8) 0
8~< 12 ± 0.040(1.01) ±10 3 /16(4.8) 0
12~< 14 ± 0.050(1.26) ±10 3 /16(4.8) 0