JIS G3461 Steel Pipe

JIS G3461

JIS G3461 is a carbon steel tube developed by the Japan Industrial Standardization Board for boiler and heat exchanger applications. Pandapipe provides you with JIS G3461 standard steel pipes manufactured using seamless and resistance welding manufacturing processes. And normalizing treatment before cold processing, to ensure the durability and high performance of the pipe.

JIS G3461 Specification

JIS G3461 standard steel tubing has a comprehensive specification. Strictly follow the technical requirements of high temperature service, and the pipe will be normalized, quenched, tempered and other heat treatment of the manufacturing process. We can also provide you with a variety of surface finishes, end types, joint methods, and machining services. Make sure your project is a perfect fit.

Standard	JIS G3461
Procedure	BW ERW SMLS
Dimensions	15.9 – 139.8mm
Dimensions	DN10 – DN125
Thickness	1.2mm – 12.5mm
Unit Length	specific random
Steel Grade	STB340 STB410 STB510
Surface Coating	Varnishing, Oiling, Hot Dip Galvanizing
End Type	Square cut, Plain, Bevelled, Threaded, Socket,
Joint Method	Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe Machining	Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

JIS G3461 Dimension Table

Pandapipe offers JIS G3461 steel pipes in a comprehensive range of sizes. Pandapipe offers JIS G3461 steel pipes in a comprehensive range of sizes. Multiple sizes give you a wide range of options. On the other hand, flexible sizes are also available to be customized to ensure that your small compact heat exchangers, or large industrial boiler piping systems, can be sized to fit.

Steel Grades in JIS G3461

We offer JIS G3461 Carbon Steel Tubes in a variety of steel grades to meet your specific needs.
The available steel grades are STB340 (STB35), STB410(STB42), and STB510 (STB52).
Each grade offers unique properties, making them suitable for different applications.
Whether you need tubes with high tensile strength, excellent ductility, or superior resistance to heat and corrosion, we have the right steel grade for you.

Steel Pipe Grade	Minimum Tensile Strength (MPa)
JIS G3461 STB340	340
JIS G3461 STB410	410
JIS G3461 STB510	510

Mechanical & Chemical Requirements of JIS G3461

Chemical Requirements of JIS G3461

Pandapipe strictly complies with the chemical composition requirements of JIS G3461 standard. In the manufacturing process of steel pipes, each chemical element is strictly controlled to ensure that the pipes produced can withstand high temperature and high pressure environments in boilers and heat exchangers.

Chemical Composition Unit:%
Symbol of Grade	C	Si	Mn	P	S
STB 340	0.18 max.	0.35 max.	0.30 to 0.60	0.035 max.	0.035 max.
STB 410	0.32 max.	0.35 max.	0.30 to 0.80	0.035 max.	0.035 max.
STB 510	0.25 max.	0.35 max.	1.00 to 1.50	0.035 max.	0.035 max.

Mechanical Properties of JIS G3461

Pandapipe has strict mechanical requirements for every grade of JIS G3461 standard carbon steel pipe. The elongation, tensile strength, yield strength and other parameters of the pipe are strictly controlled. Ensure they can withstand the stresses and strains of high-temperature service. After heat treatment, such as normalizing or quenching and tempering, the pipe can also play the best performance under extreme environmental conditions.

Mechanical Properties
Symbol of Grade	Tensile StrengthN/mm2	Yield Point or Proof Stress N/mm2	Elongation %
			Outside Diameter under 10 mm	Outside Diameter 10 mm or over to and excl.20 mm	Outside Diameter 20 mm or over
			Test Piece for Tensile Test
			No. 11 Test Piece	No. 11 Test Piece	No. 11 or No. 12 Test Piece
STB 340	340 min.	175 min.	27 min.	30 min.	35 min.
STB 410	410 min.	255 min.	17 min.	20 min.	25 min.
STB 510	510 min.	295 min.	17 min.	20 min.	25 min.
NOTE: 1 N/mm2=1 MPa

Production Tolerance of JIS G3461

The production tolerances mainly cover the outer diameter tolerances of hot finishing seamless steel pipe, cold working seamless steel pipe, resistance welded steel pipe except cold working and cold working resistance welded steel pipe to JIS G3461 standard.

Division of outside diameter	Toleranoes on outside diameter
Division of outside diameter	Hot finished seamless steel tube	Cold finished seammless steel pipe	Electric resistance welded steel tube other than cold finished	Cold finished electric resistance welded steel tube
Under 25	+ 0.4,-0.8	[0.10	[1.5	[0.10
25 or over to and excl. 40		[0.15	[0.2	[0.15
40 or over to and excl. 50		[0.20	[0.25	[0.20
50 or over to and excl. 60		[0.25	[0.3	[0.25
60 or over to and excl. 80		[0.3	[0.4	[0.3
80 or over to and excl. 100		[0.4	+ 0.4,-0.6	[0.4
100 or over to and excl.120	+ 0.4,-1.2	+ 0.4,-0.6	+ 0.4,-0.8	+ 0.4,-0.6
120 or over to and excl.160	+ 0.4,-1.2	+ 0.4,-0.8	+ 0.4,-1.0	+ 0.4,-0.8
160 or over to and excl.200	+ 0.4,-1.8	+ 0.4,-1.2	+ 0.4,-1.2	+ 0.4,-1.2
200 or over	+ 0.4,-2.4	+ 0.4,-1.6	+ 0.4,-1.6	+ 0.4,-1.6

Application of JIS G3461

Heat exchanger: A pipe device used to transfer heat. JIS G3461 carbon steel pipe has good high temperature strength and oxidation resistance.
Boiler manufacturing: Boiler pipes are often used in heating systems, power plants and other places. The high temperature resistance and pressure resistance of the pipe are required.
Fertilizer industry: Pipes are required to have good corrosion resistance and strength. It can withstand the high temperature and high pressure environment produced in the process of fertilizer production.