There are many sizes of black square pipes. So black square tube is widely used in construction, machinery manufacturing, steel structure engineering, shipbuilding, solar power stents, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain wall building, highway, rail, airports, boiler, building construction, pressure vessels, storage tanks, Bridges, power station equipment, lifting transportation machinery such as load of welded structure, etc. Welcome to contact Yuantai Derun, e-mail: sales@ytdrgg.com , real-time connection factory inspection or factory visit!

Specification of square and rectangular hollow section

OD(MM)	THICKNESS(MM)	OD(MM)	THICKNESS(MM)	OD(MM)	THICKNESS(MM)	OD(MM)	THICKNESS(MM)
20*20	1.3	60*120 80*100 90*90	1.50	180*180	3	300*800 400*700 550*550 500*600
	1.4		1.70		3.5-3.75		9.5-9.75
	1.5		1.80		4.5-4.75		11.5-11.75
	1.7		2.00		5.5-7.75		12-13.75
	1.8		2.20		9.5-9.75		15-50
	2.0		2.5-4.0		11.5-11.75
20*30 25*25	1.3		4.25-4.75		12.0-25.0
	1.4		5.0-6.3	100*300 150*250 200*200	2.75	300*900 400*800 600*600 500*700
	1.5		7.5-8		3.0-4.0		9.5-9.75
	1.7	50*150 60*140 80*120 100*100	1.50		4.5-9.75		11.5-11.75
	1.8		1.70		11.5-11.75		12-13.75
	2.0		2.00		12.5-12.75		15-50
	2.2		2.20		13.5-13.75
	2.5-3.0		2.5-2.75		15.5-30
20*40 25*40 30*30 30*40	1.3		3.0-4.75	150*300 200*250	3.75	300*1000 400*900 500*800 600*700 650*650
	1.4		5.5-6.3		4.5-4.75
	1.5		7.5-7.75		5.5-6.3		9.5-9.75
	1.7		9.5-9.75		7.5-7.75		11.5-11.75
	1.8		11.5-16		9.5-9.75		12-13.75
	2.0	60*160 80*140 100*120	2.50		11.5-11.75		15-50
	2.2		2.75		13.5-30
	2.5-3.0		3.0-4.75	200*300 250*250	3.75	400*1000 500*900 600*800 700*700
	3.25-4.0		5.5-6.3		4.5-4.75
25*50 30*50 30*60 40*40 40*50 40*60 50*50	1.3		7.5-7.75		5.5-6.3		9.5-9.75
	1.4		9.5-16		7.5-7.75		11.5-11.75
	1.5	75*150	2.50		9.5-9.75		12-13.75
	1.7		2.75		11.5-11.75		15-50
	1.8		3.0-3.75		12-13.75
	2.0		4.5-4.75		15.5-30
	2.2		5.5-6.3	200*400 250*350 300*300	4.5-6.3	500*1000 600*900 700*800 750*750
	2.5-3.0		7.5-7.75		7.5-7.75		9.5-9.75
	3.25-4.0		9.5-16		9.5-9.75		11.5-11.75
	4.25-4.75	80*160 120*120	2.50		11.5-11.75		12-13.75
	5.0-5.75		2.75		12-13.75		15-50
	5.75-6.3		3.0-4.75		15.5-30
40*80 50*70 50*80 60*60	1.3		5.5-6.3	200*500 250*450 300*400 350*350	5.5-6.3	500*1100 600*900 700*800 750*750
	1.5		7.5-7.75		7.5-7.75		9.5-9.75
	1.7		9.5-9.75		9.5-9.75		11.5-11.75
	1.8		11.5-20		11.5-11.75		12-13.75
	2.0	100*150	2.50		12-13.75		15-50
	2.2		2.75		15.5-30
	2.5-3.0		3.0-4.75	280*280	5.5-6.3	600*1100 700*1000 800*900 850*850
	3.25-4.0		5.5-6.3		7.5-7.75		9.5-9.75
	4.25-4.75		7.5-7.75		9.5-9.75		11.5-11.75
	5.0-6.0		9.5-9.75		11.5-11.75		12-13.75
40*100 60*80 70*70	1.3		11.5-20		12-13.75		15-50
	1.5	100*200 120*180 150*150	2.50		15.5-30
	1.7		2.75	350*400 300*450	7.5-7.75	700*1100 800*1000 900*900
	1.8		3.0-7.75		9.5-9.75		11.5-11.75
	2.0		9.5-9.75		11.5-11.75		12-13.75
	2.2		11.5-20		12-13.75		15-50
	2.5-3.0	100*250 150*200	3.00		15.5-30
	3.25-4.0		3.25-3.75	200*600 300*500 400*400	7.5-7.75	800*1100 900*1000 950*950
	4.25-4.75		4.25-4.75		9.5-9.75		11.5-11.75
	5.0-6.3		9.5-9.75		11.5-11.75		12-13.75
50*100 60*90 60*100 75*75 80*80	1.3		11.5-11.75		12-13.75		15-50
	1.5		12.25		15.5-40
	1.7	140*140	3.0-3.75	300*600 400*500 400*400	7.5-7.75	900*1100 1000*1000 800*1200
	1.8		4.5-6.3		9.5-9.75
	2.0		7.5-7.75		11.5-11.75		20-60
	2.2		9.5-9.75		12-13.75
	2.5-3.0		11.5-25		15.5-40
	3.25-4.0	160*160	3.00	400*600 500*500	9.5-9.75	1100*1000 1100*1100
	4.25-4.75		3.5-3.75		11.5-11.75		20-60
	5.0-5.75		4.25-7.75		12-13.75
	7.5-8		9.5-25		15.5-40

01  DERECT DEAL

    We have been specialized  in

    producing steel for many years

• 02  COMPLETE
• SPECIFICATIONS

  OD:10*10-1000*1000MM 10*15-800*1100MM

   Thickness:0.5-60mm

   Length:1-24M or as required

3  CERTIFICATION IS COMPLETE can produce steel pipe products of world stardard,such as European standard,American standard, Japanese standard,Astralian standard,natinal standard and so on. 04 LARGE INVENTORY Common specifications perennial inventory of 200000 tons

THE ONLY

rectangular tube manufacturer selected into the top ten steel tube brands in China

THE QUALIFIED RATE OF PRODUCTS >100%

Q1: Are you trading company or manufacturer ? A: We are factory. Q2: How long is your delivery time? A: Generally it is 5-10 days if the goods are in stock. or it is 30 days if the goods are not in stock, it is according to quantity. Q3:Do you provide samples ? is it free or extra ? A: Yes, we could offer the sample for free charge with the cost of freight paid by customer. Q4: What is your terms of payment ? A: Payment<=1000USD, 100% in advance. Payment>=1000USD 30% T/T in advance ,balance before shippment.If you have another question, pls feel free to contact us as below