Name: China JIS G3461 Carbon Steel Tubes For Boiler And Heat Exchanger Manufacturers Suppliers Factory - GNEE Pipe
Brand: GNEE
SKU: 277899319

Products Description

JIS G3461 specifies carbon steel pipes used to transfer heat inside and outside the pipe, such as boiler water pipes, smoke pipes, superheaters, air preheaters, etc. This Standard specifies tubes used for exchangers, condenser tubes, catalyst tubes, etc. However, this does not apply to steel pipes for heating furnaces and steel pipes for low-temperature heat exchangers. This standard normally applies to pipes with an outside diameter between 15,9 mm and 139,8 mm.

Grade:G3461 STB340 (STB35), G3461 STB410(STB42), G3461 STB510 (STB52)

Outer Dimensions: 19.05mm – 168.3mm

Wall Thickness:2.0mm – 14 mm

Length: max 19000mm

JIS G3461 Carbon Steel TubesStandard Specification

JIS G3461 steel heat exchanger tubes for low temperature serviceChemical composition

Standard	Grades	Chemical composition
Standard	Grades	C	Si	Mn	P	S
JIS G3461	STB340	≤0.18	≤0.35	0.30～0.60	≤0.035	≤0.035
	STB410	≤0.32	≤0.35	0.30～0.80	≤0.035	≤0.035
	STB510	≤0.25	≤0.35	1.00～1.50	≤0.035	≤0.035

JIS G3461 heat exchanger tubes mechanical properties

Standard	Grades	Tensile strength (MPa)	Tensile strength (MPa)	Elongation (%)
JIS G3461	STB340	≥340	≥175	≥35
	STB410	≥410	≥255	≥25
	STB510	≥510	≥295	≥25

Equivalent steel grade of JIS G3461 Carbon Steel Tubes for Boiler

JIS G3461	ASTM	ASME	BS	DIN	ISO	ABS	NK	LRS	DNV
STB 340	A178	SA178 A	3059-P1 320	17175 st 35.8		ABS D	KSTB 33	Sec 6 320	Sec 4-E-TS360
STB 410	A178 C	SA178 C	3059-P2 440	17175 st 45.8		ABS F	KSTB 42	Sec 6 410	Sec 4-E-TS410-1
STB 510				17175 19Mn 5					Sec 4-E-TS510

Manufacture method of JIS G3461 JIS G3461 Steel Tubes For Heat Exchanger

Symbol of class	Heat treatment
Symbol of class	Hot finished seamless steel tube	Cold finished seamless steel tube	Electric resistance welded steel tube other than hot finished or cold finished steel tube	Finished electric resistance welded steel tube	Fold finished electric resistance welded steel tube
STB340	As manufactured, as required, low temperature annealing or normalizing may be performed.	Low temperature annealing, normalizing or full annealing.	Normalizing	As manufactured. However, as required, low temperature annealing or normalizing may be performed.	Normalizing
STB 410	As manufactured. However, as required, low temperature annealing or normalizing may be performed.	Low temperature annealing, normalizing or full annealing.	Normalizing	Low temperature annealing	Normalizing
STB 510	Normalizing

Tolerances of Wall Thickness

Tolerances	Division of wall thickness (mm)	Division of method of manufacture	Hot finished seamless steel tube		Cold finished seamless steel tube		Electric resistance welded steel tube
		Division of outside diameter (mm)	Under 100	100 or over	Under 40	40 or over	Under 40	40 or over
Tolerances on wall thickness %	Under 2		---	---	+0.4mm	+22 0	+0.3	+18 0
					0		0
	2 or over to and excl. 2.4		+40	---	+20 0		+18 0
			0
	2.4 or over to or excl. 3.8		+35	+35
			0	0
	3.8 or over to or excl. 4.6		+33	+33
			0	0
	4.6 or over		+28	+28
			0	0
Tolerances on thickness disparity%	---		Within 22.8 of wall thickness		---		---