Jis G 3444 Standard

JIS G3444 Structural Steel Tube

JIS G3444 indicated welded or consistent carbon steel tubes for general auxiliary purposes,civil designing, engineering, steel towers, frameworks, swaggers, heaps for concealment of avalanche and different structures

• Grade:STK290,STK400,STK490,STK500,STK540
• Outer diameter: 33.4-660mm
• Wall thickness:2.1-22mm
• Length:0.8-18m
• suppliers Method: Hot Rolled.
• Surface Treatment: Coating, Painting, Galvanized, etc.

Product Specification

Commodity	JIS G 3444 Stk400 Stk490 Stk500 ERW Structural Steel Pipe
Outer diameter	ERW / HFW	LSAW / DSAW	SSAW / HSAW	RHS	SHS
	1/8 - 20 inch (10.3 - 508 mm)	12 - 56 inch (323.8 - 1,420 mm)	8 - 126 inch (219.1 - 3,200 mm)	40 x 20 mm - 1,000 x 800 mm	15 x 15 mm - 1,000 × 1,000 mm
Wall thickness	0.4 - 16 mm	6.0 - 40 mm	6.0 - 26 mm	1.0 - 30 mm	0.6 - 30 mm
Length	5.8 ~ 12.0 m or upon customers' requirements
Standard	GB/T 3091, GB/T 13793, ASTM A252, ASTM A53, ASTM A500, EN 10210, EN 10219, API 5L, DIN 1626/1615, DIN 17120, etc.
Grade	SS400, Q235, Q345, Q460, A572 Gr.50, Gr.1/Gr.2/Gr.3, S235, S275, S355, Grade A/B, X42, X52, X60, X70, etc.
Surface	Prime quality (bared, oiled, color paint, 3LPE, or other anti-corrosive treatment)
Inspection	With Chemical Composition and Mechanical Properties Analysis; Dimensional and Visual Inspection, also with Nondestructive Inspection.
Application	structure, electric power transmission tower projects, piling, water, oil & gas pipeline engineering, mechanical industry, municipal projects, roads and its auxiliary facilities, etc.
Packing	Standard export, in bulk / bundles / nylon fabric bags with seaworthy packing; or according to customers' requestments.
Delivery Time	1. 20-45 days after received deposit or confirmed L/C 2. Depends on your order quantity
Payment Terms	1. T/T: 30% T/T advance, 70% balance copy of  B/L 2. L/C: at sight 3. T/T and L/C: 30% T/T advance, 70% L/C
Port	China main port

JIS G3444 structural steel tube dimension table:

Outside diameter mm	Thickness   mm	Unit   mass kg/m	Informative reference
			Cross-sectional area	Geometrical   moment of   inertia	Modulus of section	Radius of gyration of area
21.7	2	0.972	1.238	0.607	0.56	0.7
27.2	2	1.24	1.583	1.26	0.93	0.89
	2.3	1.41	1.799	1.41	1.03	0.88
34	2.3	1.8	2.291	2.89	1.7	1.12
42.7	2.3	2.29	2.919	5.97	2.8	1.43
	2.5	2.49	3.157	6.4	3	1.42
	2.8	2.76	3.51	7.02	3.29	1.41
48.6	2.3	2.63	3.345	8.99	3.7	1.64
	2.5	2.84	3.621	9.65	3.97	1.63
	2.8	3.16	4.029	10.6	4.36	1.62
	3.2	3.58	4.564	11.8	4.86`	1.61
60.5	2.3	3.3	4.205	17.8	5.9	2.06
	3.2	4.52	5.76	23.7	7.84	2.03
	4	5.57	7.1	28.5	9.41	2
76.3	2.8	5.08	6.465	43.7	11.5	2.6
	3.2	5.77	7.349	49.2	12.9	2.59
	4	7.13	9.085	59.5	15.6	2.56
89.1	2.8	5.96	7.591	70.7	15.9	3.05
	3.2	6.78	8.636	79.8	17.9	3.04
	4	8.39	10.69	97	21.8	3.01
101.6	3.2	7.76	9.892	120	23.6	3.48
	4	9.63	12.26	146	28.8	3.45
	5	11.9	15.17	177	34.9	3.42
114.3	3.2	8.77	11.17	172	30.2	3.93
	3.6	9.83	12.52	192	33.6	3.92
	4.5	12.2	15.52	234	41	3.89
	5.6	15	19.12	283	49.6	3.85
139.8	3.6	12.1	15.4	357	51.1	4.82
	4	13.4	17.07	394	56.3	4.8
	4.5	15	19.13	438	62.7	4.79
	6	19.8	25.22	566	80.9	4.74
165.2	4.5	17.8	22.72	734	88.9	5.68
	5	19.8	25.16	808	97.8	5.67
	6	23.6	30.01	952	115	5.63
	7	27.3	34.79	109?10	132	5.6
.7	4.5	20.7	26.32	114?10	120	6.59
	5	22.9	29.17	126?10	132	6.57
	6	27.3	34.82	149?10	156	6.53
	7	31.7	40.4	171?10	179	6.5
216.3	4.5	23.5	29.94	168?10	155	7.49
	6	31.1	39.61	219?10	203	7.44
	7	36.1	46.03	252?10	233	7.4
	8	41.1	52.35	284?10	263	7.37
267.4	6	38.7	49.27	421?10	315	9.24
	7	45	57.27	486?10	363	9.21
	8	51.2	65.19	549?10	411	9.18
	9	57.4	73.06	611?10	457	9.14
	6	46.2	58.91	719?10	452	11.1
	7	53.8	68.5	831?10	552	11
318.5	8	61.3	78.04	941?10	591	11
	9	68.7	87.51	105?102	659	10.9
355.6	6.3	54.3	69.13	105?102	593	12.4
	8	68.6	87.36	132?102	742	12.3
	9	76.9	98	147?102	828	12.3
	12	102	129.5	191?102	108?10	12.2
406.4	9	88.2	112.4	222?102	109?10	14.1
	12	117	148.7	289?102	142?10	14
	16	154	196.2	374?102	184?10	13.8
	19	182	231.2	435?102	214?10	13.7
457.2	9	99.5	126.7	318?102	140?10	15.8
	12	132	167.8	416?102	182?10	15.7
	16	174	221.8	540?102	236?10	15.6
	19	205	261.6	629?102	275?10	15.5
00	9	109	138.8	418?102	167?10	17.4
	12	144	184	548?102	219?10	17.3
	14	168	213.8	632?102	253?10	17.2
508	9	111	141.1	439?102	173?10	17.6
	12	147	187	575?102	226?10	17.5
	14	171	217.3	663?102	261?10	17.5
	16	194	247.3	749?102	295?10	17.4
	19	229	291.9	874?102	344?10	17.3
	22	264	335.9	994?102	391?10	17.2
558.8	9	122	155.5	588?102	210?10	19.4
	12	162	206.1	771?102	276?10	19.3
	16	214	272.8	101?103	360?10	19.2
	19	253	322.2	118?103	421?10	19.1
	22	291	371	134?103	479?10	19
600	9	131	167.1	730?102	243?10
	12	174	221.7	958?102	320?10	20.9
	14	202	257.7	111?103	369?10	20.8
	16	230	293.6	125?103	418?10	20.7
609.6	9	133	169.8	766?102	251?10
	12	177	225.3	101?103	330?10	21.2
	14	206	262	116?103	381?10	21.1
	16	234	298.4	132?103	432?10	21.1
	19	277	352.5	154?103	505?10
	22	319	406.1	176?103	576?10

JIS G3444 structural steel tube chemical composition:

Steel Grade	Chemical  Composition %
	C	Si	Mn	P	S
STK 400	0.25 max.	-	-	0.040 max.	0.040 max.
STK 490	0.18 max.	0.55 max.	1.50 max.	0.040 max.	0.040 max.

JIS G3444 structural steel tube mechanical property:

Steel Grade	Tensile strength	Yield Strength	Elongation %
	N/kgf	N/kgf	(No.5 test piece)
STK 400	400 {41} min.	245 {25} min.	23 min.
STK 490	490 {50} min.	325 {33} min.	23 min.