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Alloy N08825 Seamless Tubing & SB 704 UNS N06625 ERW Tube Manufacturer in India


Nickel alloys 625 and grade 825 are typically associated with boilers, heat exchangers, and condensers. Boilers are vessels that heat up fluids. Contrary to what the name suggests, a boiler does not boil the said fluid. Yet the temperature in boilers is elevated. Therefore the need for an ASTM B704 Welded Tube (625/ 825) arises. Both nickel alloys are known to withstand elevated temperatures.

ASTM B704 Welded Tube

ASTM B704 Welded Tube
ASME SB 704 N08825 ERW Tubing

ASME SB 704 N08825 ERW Tubing

Moreover, Inconel 625 and the ASME SB704 825 Incoloy Welded Tube are highly resistant to corrosion. At higher temperatures, most alloys are more likely to undergo a process known as oxidation. Oxidation is a form of corrosion that results in rust on the surface of the alloy. However, Incoloy 825 and ASTM B704 Nickel 625 Welded Tube have high levels of chromium in their chemistry. Chromium in nickel alloys causes a phenomenon, referred to as passivation on the surface of ASTM B704 UNS N06625 Welded Tube. The passivated oxide layer formed with reaction to atmospheric oxygen prevents further oxidation of the SB 704 N08825 ERW Tubing material. What makes the material for both Inconel 625 as well as ASTM B704 Incoloy 825 Tube extremely heat resistant is the fact that they both contain a very high content of nickel in their alloys. Nickel increases the heat endurance of the ASTM B704 Tubes.

View ASTM B704 UNS N06625 Welded Tube & 825 Incoloy Seamless Tubing price list



Specification Format of ASME SB 704 N08825 ERW Tubing

Check ASTM B704 UNS N06625 Tube & Nickel alloy 825 Instrument Tubing price list ex Mumbai

Standards ASTM B423/ ASME SB423, ASTM B705/ ASME SB705 UNS N08825 Tube
Size 6.35 mm OD To 152 mm OD
Swg & Bwg 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
wall thickness 0.020" –0.220", (special wall thicknesses available)
Length Single Random, Double Random, Standard & Cut length Tube
Finish Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
Form ‘U’ bent, Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Etc
Types Seamless, ERW, EFW, Welded, Fabricated Tube / Tubing
End Plain End, Beveled End, Treaded Tube
Marking All ASTM B423 Incoloy 825 Tubing are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Application & uses Oil Tube, Gas Tube, Fluid Tube, Boiler Tube, Heat exchanger Tube,
Value Added Service Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc.
Specialize in ASTM B423 Incoloy 825 Capillary Tube & Other Odd Size 
Inconel NCF 825 Heat Exchanger & Condenser Tube
Test Certificate Manufacturer Test Certificate 
Laboratory Test Certificate from Govt. Approved Lab. 
Under Third Party Inspection
We can also cut, thread, and groove Inconel NCF 825 Tube to meet your specifications. Incoloy 825 Tube Dimension ANSI/ ASME B36.10, B36.19, B2.1

Frequently Used ASTM B704 Welded Tube Types

ASTM B704 N06625 Instrument Tubing

ASTM B704 N06625 Instrument Tubing

ASME SB704 UNS N06625 Welded Tube

ASME SB704 UNS N06625 Welded Tube

ASTM B704 UNS N08825 High Pressure Tubing

ASTM B704 UNS N08825 High Pressure Tubing

ASTM B704 Alloy N06625 Electropolished Tubes

ASTM B704 Alloy N06625 Electropolished Tubes

ASME SB704 UNS N08825 Welded Tube

ASME SB704 UNS N08825 Welded Tube

ASTM B704 Alloy N06625 Bright Annealed Tube

ASTM B704 Alloy N06625 Bright Annealed Tube

SB704 Nickel Alloy N08825 Capillary Tubing

SB704 Nickel Alloy N08825 Capillary Tubing

ASTM B704 inconel N06625 Square Tubing

ASTM B704 inconel N06625 Square Tubing


ASME SB 704 N08825 ERW Tubing Sizes

ASME SB 704 UNS N08825 ERW Tubing in various thickness and size range
Wall Thickness Incoloy 825 Tube Sizes ( O.D.)
.010 1/16" , 1/8" , 3/16"
.020 1/16" , 1/8" , 3/16" , 1/4" , 5/16" , 3/8"
.012 1/8"
.016 1/8" , 3/16"
.028 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 3/4" , 1" , 1 1/2" , 2"
.035 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 7/16" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4"
.049 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/8" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4"
.065 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 3/4" , 2" , 2 1/2" , 3"
.083 1/4" , 3/8" , 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 7/8" , 2" , 2 1/2" ,3"
.095 1/2" , 5/8" , 1" , 1 1/4" , 1 1/2" , 2"
.109 1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2"
.120 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 2" , 2 1/4" , 2 1/2" , 3"
.125 3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 3 1/4"
.134 1"
.250 3"
.375 3 1/2"

Pressure Ratings of SB 704 UNS N06625 ERW Tube

Tube O.D.
(in.)
Wall Thickness of Tube (inches)
.028 .035 .049 .065 .083 .095 .109 .120
Working Pressure (psig)
1/8 7900 10100            
1/4 3700 4800 7000 9500        
5/16   3700 5400 7300        
3/8   3100 4400 6100        
1/2   2300 3200 4400        
3/4     2200 3000 4000 4600    
1       2200 2900 3400 3900 4300

ASTM B704 Alloy Seamless Tubing Chemical Properties

Grade C Mn Si S Cu Fe Ni Cr Al Ti
ASTM B704 0.05 max 1.00 max 0.05 max 0.03 max 1.50 – 3.00 22.00 min 38.00 – 46.00 19.50 – 23.50 0.02 max 0.06 – 1.20

ASME SB704 Alloy Welded Tube Mechanical Strength

Check ASTM B704 UNS N08825 High Pressure Tubing & Alloy N06625 Electropolished Tubes Equivalent grade and Chemical Composition
Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
ASTM 704 8.14 g/cm3 1400 °C (2550 °F) Psi – 80,000 , MPa – 550 Psi – 32,000 , MPa – 220 30 %

ASTM B704 inconel 625 Instrument Tubing Equivalent Material

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN OR
ASTM B704 2.4858 N08825 NCF 825 NA 16 ЭП703 NFE30C20DUM NiCr21Mo XH38BT

SB 704 Nickel Alloy N06625 Capillary Tubing Wall Thickness

Types of Incoloy 825 Tube Out diameter (OD) Wall thickness Length
NB Sizes (in stock) 1/8” ~ 8” SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 Upto 6 Meters
Incoloy 825 Seamless Tube (Custom Sizes) 5.0mm ~ 203.2mm As per requirement Upto 6 Meters
Incoloy 825 Welded Tube (in Stock + Custom Sizes) 5.0mm ~ 1219.2mm 1.0 ~ 15.0 mm Upto 6 Meters