Black Welded Steel Tube (Square or Rectangle Hollow Section) (ZL-ST)

• Customization: Available
• Type: Welded
• Technique: ERW
• Model NO.: ZL-ST
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Construction & Decoration
• Section Shape: Square
• Surface: Black, Bright, Zinc Coating
• Square Section: 13X13mm - 400X400mm
• Rectangle Section: 10X20mm - 300X400mm
• Transport Package: Bundle
• Origin: Tianjin
• Production Capacity: 10000tons/ Month

Product Description

Black Welded Steel Tube
Steel Tube Square Hollow Section/ Rectangle Hollow Section

Specification:
1.Square dimensions: 15*15mm-500*500m.
2.Rectangular dimensions: 10*20mm-400*600mm.
3.Length: 1-14m or according to customer's requirement.
4.Special design is available according to requirement
5.Techniques: cold rolled, hot rolled, high-frequency welding and cold-formed molding technology.
6.Standards: GB/T 6728-2002, ASTM A500, EN 10219, JIS G3466,DIN
7.Usage:Mechanical and manufacture, steel structure, ship building, bridging, automobile chassis.
 The main Products

Name of products	size (mm)	Wall thickness (mm)	Name of Products	Size (mm)	Wall thickness (mm)
Square  tubes	20*20	1.3-2.5	Rectangular  tubes	20*30	1.3-2.75
	25*25	1.3-2.75		20*40	1.3-2.75
	30*30	1.3-2.75		25*40	1.3-2.75
	40*40	1.3-3.75		30*50	1.3-4.75
	50*50	1.3-5.75		30*60	1.3-4.75
	60*60	1.3-5.75		40*50	1.3-4.75
	70*70	1.3-5.75		40*80	1.3-4.75
	80*80	1.3-5.75		50*70	1.3-4.75
	90*90	1.3-5.75		50*80	1.3-4.75
	100*100	1.2-12		60*90	1.3-4.75
	120*120	2.5-12		50*100	1.3-5.75
	140*140	2.75-16		50*150	1.3-5.75
	150*150	2.75-16		60*160	1.3-5.75
	160*160	3.0-16		100*150	2.5-16
	180*180	3.0-16		100*200	2.5-16
	200*200	3.0-16		100*250	2.5-16
	250*250	4.75-20		150*300	4.5-16
	300*300	4.75-20		200*300	5.5-20
	400*400	4.75-20		200*400	5.5-20
	500*500	4.75-20		400*600	5.5-20
Remarks	Small order and customized size available