ASTM B704 Welded Tube

ASME SB 704 Inconel Alloy UNS N08825 ERW Tubing suppliers

Alloys of Inconel are well known for their ability to tolerate heat across the world and have various tubes and pipes made from them. One such tube is the ASTM B704 Welded Tube. The nickel alloyed tube is welded in this specification. ASTM B704 UNS N06625 Welded Tube is widely used in applications such as boilers, condensers, and heat exchangers. The main reason behind using Nickel SB 704 N08825 Tubing in these applications is that they expose the tubes to fluctuating temperatures. Hence ASTM B704 N06625/N08825 tubes are considered useful in applications where temperatures are high as well as low.

Generally, the alloy used in ASTM B704 Welded Tubing is said to have a higher performance and is hence considered to be expensive. However, when compared to the seamless version of the ASTM b704 ERW tube they are comparatively cheaper. Moreover, these tubes are welded with a single vertical weld hence the manufacturing cost is lower in practicality.

ASTM B704 Inconel Incoloy Alloy Welded Tube has decent resistance to sulfuric acid, phosphoric acid, and seawater. These tubes are also resistant to oxidizing and reducing acids. ASTM B704 Inconel 625 Welded tubes are used in oil and gas piping, pollution control equipment, acid production, pickling equipment, and so on. They have a stable austenite structure and the high nickel content in ASTM B704 Inconel Tubing helps it in resisting chloride ion stress corrosion. Pickling and rinsing the tubes post heat treatment helps in obtaining maximum corrosion resistance. 

We produce fine quality ASTM B704 Incoloy 825 Welded Pipe and provide them to our customers at a competent price. This has helped us sustain our position in the league of the leading manufacturers of ATSM B704 pipes in India.


ASTM B704 Welded Tube
ASTM B704 Welded Tube
ASTM B704 UNS N06625 Tube
ASTM B704 UNS N06625 Tube
ASME SB704 Welded Tube
ASME SB704 Welded Tube


No need to pay extra when you can buy ASTM B704 N06625 Welded Tubes in exact sizes, Get free quote Now!


Specification List of ASTM B704 Welded Tube

Size 6.00 mm OD up to 914.4 mm OD
Thickness 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS
Length Within 13500mm
Type Welded Pipes, Welded Tubes

ASTM B704 UNS N06625 Chemical Composition

Grade C Mn Si Fe S Cr2 Al-Ti Ni
625 min. 20.0 58.0
max. 0.10 0.50 0.50 5.0 0.015 23.0 0.40


Check sizes, dimensions and latest price of ASTM B704 Heat exchanger and Boiler Tube in India


Mechanical Properties of ASME SB704 Alloy 625 Tube

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
625 Psi – 1,35,000 , MPa -930 Psi – 75,000 , MPa – 517 42.5

Equivalent Properties of ASME SB704 Incone 625 Welded Tube

Grade UNS No Old British Euronorm GOST Japanese JIS
Inconel 625 N06625 NA 21 NiCr22Mo9Nb 2.4856 NC22DNB4M ХН75МБТЮ NCF 625


ASTM B704 Incoloy 825 Welded Pipe for Seawater & Acids environment


Test Certificates of ASTM B704 UNS N06625 Tube

  • 100% Radiography Test Report
  • EN 10204/3.1B,
  • Raw Materials Certificate
  • Third Party Inspection Report, etc.


Buy ASTM B704 Inconel Tubing in various shape like Round, Square & Rectangular.


Available ASTM B704 Grade

  • ASTM B704 UNS N06625
  • ASTM B704 UNS N06219
  • ASTM B704 UNS N08825