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black carbon steel square pipe

1.Manufacture Large Diameter Carbon steel ERW Welded Black Square Pipe

1)Surfacte: can be Galvanized,Bared Or Painted

2)Gal method: hot dipped or pre-galvanized

3)OD:15*15-600*600mm

4)Standard: ASTM A500 EN10219 JIS G3466 GB3094 GB-6728

black carbon steel square pipe

:specification

1) Outer Diameter:

square 15*15-400*400mm b)rectangular 20*25-300*500mm

2) Wall thickness:0.5mm-13mm

3) Length:1-5.8/6/12m or nonstandard

4) Standard: GB3091, ASTM A53, BS1387

7)Tolerence of OD: +0.05mm

8)Payment:T/T L/C at sight

9) Application: Structure building , car chassis , shipbuilding , decoration , etc.

10) MOQ: At least 20 tons

: material

Square steel pipe (mm )					Rectangular steel pipe (mm)
OD	WT	OD	WT	OD		WT	OD	WT
15*15	0.6--1.5	120*120	1.7—5.75	20*(25—50)		1.5-2.75	100*(150-300)	1.5-10
20*20	0.6—2.5	125*125	2.75-5.75	25*(40—50)		0.8-2.75	110*(110-140)	4.0-5.75
25*25	0.6—3.0	130*130	4.0—5.75	30*(40—60)		0.6-3.75	120*(140-160)	3.0-7.5
30*30	0.6—4.0	140*140	2.75-5.75	40*(50—150)		1.0-6.0	130*(160-200)	5.0-7.5
40*40	0.7—5.0	150*150	2.5-9.75	50*(70—150)		0.8-6.0	150*(200-300)	3.0-12
50*50	0.7—5.75	160*160	3.0-9.75	60*(80—180)		1.7-5.75	160*(160-250)	3.0-12
60*60	0.7—5.75	180*180	3.0-9.75	70*(120—200)		2.0-6.0	180*(250-350)	4.0-12
70*70	1.0—5.75	200*200	3.5-11.75	80*(100—200)		2.0-7.75	200*(250-400)	5.0-12
75*75	1.3—5.75	250*250	3.75-11.75	90*(140—180)		3.0-4.75	220*220	5.0-12
80*80	1.3—5.75	300*300	4.75-11.75	The above is our popular size
90*90	1.5—5.75	350*350	7.75-11.75	We also can meet your other requirements.
100*100	1.2—5.75	400*400	7.75-11.75	Black pipe are usually with anti-rust or black painting on surface

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