building material mill black steel square tube carbon steel square pipe/hollow section   Square hollow sections or square tubes are cold formed and welded from either hot rolled, cold rolled, pre-galvanized or stainless steel. In order to form the square steel section the appropriate mother tube, a round steel tube, has to be formed first. From a round tube rolls are used that progressively press the round tube into a square hollow section. This is all done inline. Square and rectangula...

·  FOB Price:US $589 - 789 / ton

·  Min.Order Quantity:10 tons

·  Supply Ability:6000 tons/ per Month

·  Port:Xingang,TianJin

·  Payment Terms:L/C,D/A,D/P,T/T

·  Delivery time:According to the order quantity, the delivery time range from five days to twenty days.

Square hollow sections or square tubes are cold formed and welded from either hot rolled, cold rolled, pre-galvanized or stainless steel.

In order to form the square steel section the appropriate mother tube, a round steel tube, has to be formed first. From a round tube rolls are used that progressively press the round tube into a square hollow section. This is all done inline.
Square and rectangular steel tubes have the advantage of being stronger in bending while a round hollow sections has more stiffness in twisting.

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