Discover the excellence of Carbon Steel SA179 Tubes, widely acclaimed for their exceptional tensile and yield strength. The SA179 grade boasts unmatched properties, including corrosion resistance, oxidation resistance, pitting resistance, acid resistance, crevice corrosion resistance, and outstanding overall strength.

At our state-of-the-art production unit, we go above and beyond in crafting these high-quality Carbon Steel SA179 Tubes with precision and unwavering dedication. Elevating the inherent qualities of the tubes, we use premium-grade raw materials to impart greater strength and durability to this versatile range. Our commitment to quality is evident in every tube produced.

Key Features of SA178 Grade A Tubes:

  • Exceptional Tensile and Yield Strength: SA179 Tubes stand out for their remarkable tensile and yield strength, ensuring reliability in diverse applications.
  • Corrosion and Oxidation Resistance: Designed to resist corrosion, oxidation, and pitting, these tubes offer longevity even in challenging environments.
  • Acid and Crevice Corrosion Resistance: The tubes demonstrate resilience against acids and crevice corrosion, contributing to their durability.
  • Manufactured with Precision: Our advanced technologies and modern machinery guarantee the production of high-quality CS SA179 Tubes that meet and exceed industry standards..

Experience the pinnacle of low-carbon engineering with ASME SA 179 Carbon Steel Seamless Tubes. Boasting a carbon content of 0.06-0.18% and a manganese combination of 0.27-0.63%, these tubes, also known as mild steel pipes, redefine durability and versatility. Crafted to perfection, ASME SA 179 Tubes are low-cost, easy to form, and shape, making them an exemplary choice for various applications..

Key Characteristics:

  • Low Carbon Excellence: ASME SA 179 Tubes stand out as low-carbon steel tubes, providing a perfect blend of strength and malleability.
  • Cost-Effective Solution: Renowned for their cost-effectiveness, these tubes are easy on the budget without compromising on performance.
  • Mild Steel Construction: Often referred to as mild steel pipes, these tubes exhibit characteristics ideal for a wide range of applications.
  • Compliance with ASME Specification: Manufactured in strict accordance with ASME specifications, ensuring quality and adherence to industry standards.

Choose ASME SA 179 Carbon Steel Seamless Tubes for a low-cost, high-performance solution. Experience the strength and formability of mild steel pipes that redefine excellence in low-carbon engineering.

ASTM A179 Tubes Specifications

Standard Specification SA179 Tubes & ASTM A179 Tubes
Size straight lengths up to 27.00 Meters
Outside Diameter 6.00 to 8O.00mm
Length Double Random & Required Length, Single Random or Custom
Thickness 0.85 to 6mm
Pipes & Tubes End Plain End, Beveled End, Treaded Protected With Plastic Caps
Shape Round Pipes & Tubes, Coiled Tubes, “U” Shape Pipes & Tubes
Type Seamless SA179 & ASTM A179 Pipes & Tubes.
Top exporting countries
  • North America (Canada, United States, Mexico)
  • South America (Chile, Argentina, Venezuela, Peru, Colombia, Brazil)
  • Africa (South Africa, Algeria, Egypt)
  • Oceania (Australia, New Zealand)
  • Asia (Cambodia, Indonesia, Sri Lanka, Malaysia, Thailand, Philippines, Kazakhstan, Bangladesh, South Korea, Israel, Vietnam, Myanmar, Russia, Tajikistan, Singapore, Brunei, )
  • Middle East (Kuwait, Yemen, Iran, Arabia, Saudi Jordan, U.A.E, Oman, Lebanon, )
  • Europe (England, Netherlands, Belgium, France, Austria, Germany, Italy, Switzerland )

SA 179 Grade Heat Exchanger Tubes Chemical Composition Standard

Chemical Composition C Mn P≤ S≤ Si≤
0.06-0.18 0.27-0.63 0.035 0.035 0.25  

ASME SA179 Carbon Steel Pipe Mechanical Properties

Yield Strength (Mpa) Tensile Strength (Mpa) Elongation (%)
≥180 ≥325 ≥35

ASTM A179 Straight Tubes

O.D. 15.88 – 89 mm (5/8 inch to 3 1/2 inch)
Thickness 1.651 – 7.0 mm (16 BWG to 2 BWG)
Length (Straight) 3000 – 25000 mm
Production capacity 1000 tons/month
Straightness 1:1000

SA 179 equivalent material comparison tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

KS/JIS Symbol
KS/JIS Numbe
DIN Type
DIN Materiral Number
B.S Grade
NBN Type
NBN Grade
UNI Type
ASTM A179/ SA179 K01200 STBH 340 / STB 35 D3563 / G3461   St 35.4 1629 1.0309   3606 CFS 320   D 37-2 629 (3b) TU 37 C A49-215 (3a) C 14 5462  
        St 35.8 17175 1.0305 Plus DIN 2391 Gutegard C.NBK            

SA 179 U-Bend Fabrication Tolerances

Item Condition (when) Tolercance
  Nominal bend radius ≤ 2 x nominal OD less than or equal to 12%
Ovality 2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD less than or equal to 10%
  Nominal bend radius > 4 x nominal OD  less than or equal to 5%
  Nominal bend radius ≤ 2 x nominal OD 0.75 x nominal wall
Mimimum wall thickness 2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD 0.8 x nominal wall
  Nominal bend radius > 4 x nominal OD 0.9 x nominal wall
  Nominal bend radius ≤ 8″ (200mm) +/-3/64″(1mm)
Bending Radius 8″ (200mm) < Nominal bend radius ≤ 16″ (400mm) +/-1/16″(1mm)
  Nominal bend radius >16″ (400mm) +/-5/64″(1mm)
Disrance between legs   Max 1/16″(1.5mm)
Wall thinning of bending area   Max 17%
Difference between leg lengths at the ends Leg length ≤ 16′ (4.88m) +1/8″(3mm)
Leg length > 16′ (4.88m) +3/16″(5mm)
Deviation from plane of bend   ≤ 3/16″(1.5mm)
Flattening on bend   ≤ 10% nominal diameter
Straight leg length ≤5m +1/8″(3mm)
>5m +3/16(5mm)
Total tube length including radius ≤6m +3/16(5mm)
>6m +5/16″(8mm)

Wall thickness & Tolerance of ASTM A179 Seamless Boiler Tube

Outside Diamter, mm
Tolerance, %

STM A179/ SA179 Low Temperature Cold-Finished Seamless Tubes Outside Diameter Tolerance

OD In. (mm) Permissible Variations In. (mm)
Over (+) Under (-)
Under 1 (25.4) 0.004 (0.1) 0.004 (0.1)
1 to 1 ½ (25.4 to 38.1), Incl 0.006 (0.15) 0.006 (0.15)
Over 11⁄2 to 2 [38.1 to 50.8], Excl 0.008 (0.2) 0.008 (0.2)
2 to 21⁄2 [50.8 to 63.5], Excl 0.010 (0.25) 0.010 (0.25)
21⁄2 to 3 [63.5 to 76.2], Excl 0.012 (0.3) 0.012 (0.3)

ASTM A179/ASME SA179 Tube Cut Length Tolerance

Cold-Finished Seamless Tubes
OD, In.(mm) Cut Length, in.(mm)
Over(+) Under(-)
All Sizes 3⁄16 [5] 0 [0]
Under 2 [50.8] 1⁄8 [3] 0 [0]
2 [50.8] and over 3⁄16 [5] 0 [0]
Under 2 [50.8] 1⁄8 [3] 0 [0]
2 [50.8] and over 3⁄16 [5] 0 [0]

ASTM A179/ SA179 Cold Rolled High Precision Boiler Tubing Hydrostatic Test Pressures

OD of Tube, in. [mm] Hydrostatic Test Pressure, psi [Mpa]
Under 1 [25.4] 1000 [7]
1 to 11⁄2 [25.4 to 38.1], excl 1500 [10]
11⁄2 to 2 [38.1 to 50.8], excl 2000 [14]
2 to 3 [50.8 to 76.2], excl 2500 [17]

ASTM A179 U-bent tube size range (u-bending, u-bend)

Tube Outside Diameter Tube Wall Thickness Bending Radius U Tube Straight “Leg” Length Straight Tube Before U Bending
min. 12,70 mm min. 0,70 mm min. 1,5 x D max. 11 000 mm max. 24 000 mm
max. 31,75 mm max 5,16 mm max. 1 250 mm    

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