Square rectangular tube

Square steel pipe and Rectangular steel pipe.
square and rectangular steel pipe Application : Square steel pipe and Rectangular steel pipes are widely used in all kinds of large buildings and large equipments and etc.
square and rectangular steel pipe Production capacity : 140,000 tons per year
square and rectangular steel pipe Standard : GB6728/GB6725
Material:Gr. A/B/C, S235JR,S 355JR. ASTM A36 Q235 /345

The size of Square steel pipe and Rectangular steel pipe.
Square steel tube(GB/T6728-2002 GB/T6725-2002)

20×20×(1.2-2)mm
30×30×(1.5-3)mm	140×140×(4-10)mm
40×40×(1.5-4)mm	150×150×(4-10)mm
50×50×(1.5-4.5)mm	160×160×(4-10)mm
60×60×(2-5)mm	180×180×(4-12)mm
70×70×(2.5-5)mm	200×200×(4-14)mm
80×80×(2.5-6)mm	220×220×(5-14)mm
90×90×(3-7)mm	250×250×(5-14)mm
100×100×(4-8)mm	300×300×(6-14)mm
120×120×(4-8)mm	350×350×(8-14)mm
130×130×(4-10)mm	400×400×(8-14)mm
135×135×(4-10)mm

Rectangular steel tube (GB/T6728-2002 GB/T6725-2002)

30×20×(1.5-2.5)mm
40×20×(1.5-3)mm	150×100×(4-8)mm
40×25×(1.5-3)mm	160×80×(4-8)mm
40×30×(1.5-3)mm	180×100×(4-10)mm
50×25×(1.5-3)mm	200×120×(4-10)mm
50×30×(1.5-4)mm	200×150×(4-10)mm
60×30×(2-4)mm	220×140×(4-12)mm
60×40×(2-4)mm	250×150×(4-12)mm
70×50×(2-5)mm	260×180×(5-14)mm
80×40×(2-5)mm	300×200×(5-14)mm
80×60×(3-5)mm	350×250×(6-14)mm
90×50×(3-5)mm	400×200×(6-14)mm
100×50×(3-5)mm	400×250×(6-14)mm
120×60×(3-6)mm	400×300×(8-14)mm
120×80×(3-6)mm	450×250×(8-14)mm
140×8×(4-7)mm	500×300×(8-14)mm

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