JIS G3454 Carbon Steel Pipes

GNEE Supply Carbon Steel JIS G3454 Tubes Chemical Composition:

Letter symbol of grade	Elongation %
	C	Si	Mn	P	S
STPG 370	0.25 max.	0.35 max.	0.30 to 0.90	0.040 max.	0.040 max.
STPG 410	0.30 max.	0.35 max.	0.30 to 1.00	0.040 max.	0.040 max.

GNEE Supply JIS G3454 electric-resistance welded steel tubes Mechanical Property:

Letter symbol of grade	Tensile strength	Yield point or proof stress	Elongation %
	kgf/mm2 {N/mm2}	kgf/mm2 {N/mm2}	No.11 and No.12 test pieces	No. 5 test pieces	No. 4 test piece
			Longitudinal	Transverse	Longitudinal	Transverse
STPG 370	38 {373}min	22{216} min	30 min	25 min	23 min	28 min
STPG 410	42{412}min	25{245} min	25 min	20 min	19 min	24 min

GNEE Supply CS JIS G3454 Pipe Tolerances on Outside Diameter and Wall Thickness:

Division	Tolerances on outside diameter	Tolerances on wall thickness
Hot-finished seamless steel pipe	40 A or under 0.5mm	Under 4mm
	50A or over up to and incl. 125 A 1%	+0.6mm   -0.5mm   4mm or over   +15%   -12.5%
	150A 1.6mm
	200A or over 0.8% For the pipe of nominal size 350 A or over, the tolerances on outside diameter may be determined by the measurement of the length of circumference. In this case, the tolerances shall be 0.5%.
Cold-finished seamless steel pipe and electric resistance welded steel pipe	25 A or under 0.3mm	Under 3mm 0.3mm   3mm or over 10%
	32 A or over 0.8%   For the pipe of nominal size 350 A or over, the tolerances on outside diameter may be determined by the measurement of the length of circumference. In this case, the tolerances shall be 0.5%.

Carbon Steel Tubes for Pressure Service