Features

JIS G3463 Stainless Steel Tubes for Boiler and Heat Exchanger

Chemical Composition (wt.%)

Grade	C (max)	Si (max)	Mn (max)	P (max)	S (max)	Ni	Cr	Mo	Others
SUS304TB	0.08	1.00	2.00	0.040	0.030	8.00 – 10.50	18.00 – 20.00	–	–
SUS304LTB	0.030	1.00	2.00	0.040	0.030	9.00 – 13.00	18.00 – 20.00	–	–
SUS310STB	0.08	1.50	2.00	0.040	0.030	19.00 – 22.00	24.00 – 26.00	–	–
SUS316TB	0.08	1.00	2.00	0.040	0.030	10.00 – 14.00	16.00 – 18.00	2.00 – 3.00	–
SUS316LTB	0.030	1.00	2.00	0.040	0.030	12.00 – 15.00	16.00 – 18.00	2.00 – 3.00	–
SUS316TiTB	0.08	1.00	2.00	0.040	0.030	10.00 – 14.00	16.00 – 18.00	2.00 – 3.00	Ti: 5 × C % min.
SUS321TB	0.08	1.00	2.00	0.040	0.030	9.00 – 13.00	17.00 – 19.00	–	Ti: 5 × C % min.
SUS347HTB	0.10	1.00	2.00	0.040	0.030	9.00 – 13.00	17.00 – 19.00	–	Nb: 8 × C % to 1.00
SUS410TB	0.15	1.00	1.00	0.040	0.030	–	11.50 – 13.50	–	–
SUS430TB	0.12	0.75	1.00	0.040	0.030	–	16.00 – 18.00	–	–
SUS444TB	0.025	1.00	1.00	0.040	0.030	1.00	17.00 – 20.00	1.75 – 2.50	Ti, Nb, Zr, or combination of these: 8 × (C % + N %) to 0.80

Mechanical Properties

Symbol of Grade	Tensile Strength (N/mm²)	Proof Stress (N/mm²)	Elongation (%)	Remarks
SUS304TB	520 min.	205 min.	27 min.	Outside Diameter Under 10 mm Parallel to tube axis
SUS304LTB	480 min.	175 min.	27 min.
SUS310STB	520 min.	205 min.	27 min.
SUS316TB	520 min.	205 min.	27 min.
SUS316LTB	480 min.	175 min.	27 min.
SUS316TiTB	520 min.	205 min.	27 min.
SUS321TB	520 min.	205 min.	27 min.
SUS347HTB	520 min.	205 min.	27 min.
SUS304TB	520 min.	205 min.	30 min.	10 mm or over to and excl. 20 mm Parallel to tube axis
SUS304LTB	480 min.	175 min.	30 min.
SUS310STB	520 min.	205 min.	30 min.
SUS316TB	520 min.	205 min.	30 min.
SUS316LTB	480 min.	175 min.	30 min.
SUS316TiTB	520 min.	205 min.	30 min.
SUS321TB	520 min.	205 min.	30 min.
SUS347HTB	520 min.	205 min.	30 min.
SUS304TB	520 min.	205 min.	35 min.	20 mm or over Parallel to tube axis
SUS304LTB	480 min.	175 min.	35 min.
SUS310STB	520 min.	205 min.	35 min.
SUS316TB	520 min.	205 min.	35 min.
SUS316LTB	480 min.	175 min.	35 min.
SUS316TiTB	520 min.	205 min.	35 min.
SUS321TB	520 min.	205 min.	35 min.
SUS347HTB	520 min.	205 min.	35 min.
SUS410TB	410 min.	205 min.	12 min.	Outside Diameter Under 10 mm Parallel to tube axis
SUS430TB	245 min.	245 min.	12 min.
SUS444TB	410 min.	205 min.	12 min.
SUS410TB	410 min.	205 min.	15 min.	10 mm or over to and excl. 20 mm Parallel to tube axis
SUS430TB	245 min.	245 min.	15 min.
SUS444TB	410 min.	205 min.	15 min.
SUS410TB	410 min.	205 min.	20 min.	20 mm or over Parallel to tube axis
SUS430TB	245 min.	245 min.	20 min.
SUS444TB	410 min.	205 min.	20 min.

Technical Specifications

Specification	Value
Standard	JIS G3463 Stainless Steel Tubes for Boiler and Heat Exchanger
Grade	SUS304TB, SUS304LTB, SUS310STB, SUS316TB, SUS316LTB, SUS316TiTB, SUS321TB, SUS347HTBSUS410TB, SUS430TB, SUS444TB
Manufacturing Process	Hot Finished, Cold Finished
Seam Type	Seamless
Dimension	Tube OD: 15.9-139.8mm Tube WT: 1.2-12.5mm
Length	1000-12000mm
Delivery Condition	Annealed
Inspection Certificate	EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
Test	Chemical analysis, Tension tests, Flaring tests, Hydrostatic tests, Air underwater pressure tests, Nondestructive electric tests

Packing

The tubes are neatly arranged or bundled, lined with PVC bags, and placed inside the wooden crate.

Application

1. Boilers:
Power Generation: Stainless steel tubes under JIS G3463 are commonly used in boilers for power plants, where they transfer heat from fuel combustion to water, converting it into steam.
Industrial Boilers: These tubes are also employed in industrial boilers across various sectors like chemical processing, food and beverage production, and manufacturing plants.
Marine Boilers: Used in shipbuilding for marine boilers, which require materials that can withstand high pressure and corrosive marine environments.

2. Heat Exchangers:
Petrochemical Industry: JIS G3463 stainless steel tubes are ideal for heat exchangers in the petrochemical industry, where they are exposed to high temperatures and corrosive chemicals.
HVAC Systems: Heat exchangers in heating, ventilation, and air conditioning (HVAC) systems utilize these tubes to transfer heat between air and water or other fluids efficiently.
Chemical Processing: Used in heat exchangers in chemical plants to maintain the necessary temperatures for chemical reactions and to separate mixtures based on boiling points.
Food and Beverage Industry: These tubes are used in heat exchangers for pasteurization, sterilization, and cooling processes in the food and beverage industry, ensuring efficiency and hygiene.

3. Superheaters and Reheaters:
Power Plants: In power plants, superheaters and reheaters utilize JIS G3463 stainless steel tubes to increase the efficiency of steam turbines by reheating the steam after partial expansion.

4. Economizers:
Power Plants and Industrial Boilers: These tubes are used in economizers, which preheat feedwater before it enters the boiler, thus improving the overall efficiency of the system.

5. Condensers:
Power Plants: Stainless steel tubes are used in condensers to convert steam back into water after it has passed through the turbine, enabling the closed-loop process to continue efficiently.

6. Fluid Transportation:
Chemical and Petrochemical Plants: JIS G3463 tubes are used for transporting high-temperature fluids, including corrosive chemicals and hydrocarbons, in industrial settings.

7. Oil and Gas Industry:
Offshore and Onshore Applications: These tubes are suitable for heat exchangers in offshore and onshore oil and gas platforms, where they resist corrosion from seawater and other harsh environmental conditions.

8. Automotive Industry:
Exhaust Systems: In some cases, these stainless steel tubes are used in automotive exhaust systems, particularly for high-performance and heavy-duty vehicles that require durable and heat-resistant materials.