square pipe

FOB Price

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Paramtents

1.OD:20*20-400*400MM
2.W.T:1.2-13.5MM
3.Length:4.5-13.5mm or as client' requirements
4.package:In bundles with steel strip.

1.Product Description: structural steel square tube

electric-resistance-welded
item	Chemical composition max %					Item	mechanical property
steel	C %	Mn %	S %	P %	Si %	steel	yield point Mpa	tensile strength Mpa	elongation %
Grade A	0.25	0.95	0.045	0.05	--	Grade A	205 (min)	330 (min)	26-30
Grade B	0.3	1.2	0.045	0.05	--	Grade B	240 (min)	415 (min)	21-26
Quality Standard: ASTM A53 Standard Specification for Pipe, Black,and Hot-Dipped, Zinc-Coated, Welded and Seamless

chemical requirement					mechanical property		shaped structural tubing
Element	Composition. %						Grade A	Grade B	Grade C	Grade D
	Grade A, B and D		Grade C		tensile strength,min,	psi	45000	58000	62000	58000
	Heat Analysis	Product Analysis	Heat Analysis	Product Analysis	tensile strength,min,	Mpa	310	400	427	400
	Heat Analysis	Product Analysis	Heat Analysis	Product Analysis	yield strength, min,	psi	33000	42000	46000	36000
C, max	0.26	0.30	0.23	0.27	yield strength, min,	Mpa	228	290	317	250
Mn, max	…	…	1.35	1.40	elongation in 2in. (50.8mm),min %		25	23	21	23
P, max	0.035	0.045	0.035	0.045	quality standard: ASTM A500 standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes
S, max	0.035	0.045	0.035	0.045
Copper,(when specified) min	0.20	0.18	0.20	0.18
Copper,(when specified) min	0.20	0.18	0.20	0.18

2. Here we list some size we offen produce for your reference.

square				rectangular
OD mm	WT mm	OD mm	WT mm	OD mm	WT mm	OD mm	WT mm	OD mm	WT mm
20*20	1.0-2.0	130*130	2.5-12.0	20*30	1.0-3.0	50*80	1.8-6.0	100*150	2.5-12.0
25*25	1.0-3.0	140*140	2.5-12.0	20*40	1.2-3.0	50*90	1.8-6.0	100*200	2.5-12.0
30*30	1.2-3.0	150*150	2.5-12.0	25*40	1.2-3.0	50*100	1.5-6.0	100*250	2.5-12.0
40*40	1.2-5.0	160*160	2.5-12.0	25*50	1.2-5.0	50*120	1.5-6.0	100*300	3.0-12.0
50*50	1.2-6.0	180*180	2.5-12.0	30*40	1.2-3.0	60*80	1.3-6.0	100*400	11.5-12.0
60*60	1.3-6.0	200*200	3.0-12.0	30*50	1.2-5.0	60*90	1.5-6.0	150*200	2.5-12.0
70*70	1.3-6.0	220*220	3.5-12.0	30*60	1.2-6.0	60*100	1.5-6.0	150*250	3.0-12.0
75*75	1.5-6.0	250*250	4.5-12.0	40*50	1.2-6.0	60*120	1.5-6.0	150*300	3.0-12.0
80*80	1.5-6.0	300*300	4.0-12.0	40*60	1.2-6.0	75*125	1.5-12.0	200*300	4.5-12.0
90*90	2.0-6.0	350*350	6.0-12.0	40*80	1.3-6.0	80*100	1.5-6.0	200*400	4.75-12.0
100*100	1.5-12.0	400*400	6.0-12.0	40*100	1.3-6.0	80*120	1.5-12.0	300*400	5.75-12.0
120*120	2.5-12.0			50*70	1.3-6.0	80*140	2.5-12.0	300*500	6.0-12.0
We are the manufacturer of steel pipe with many years experience.						80*160	2.5-12.0	400*600	6-12.0

3. some images about the structural steel square tube