cold formed hot finished EN10210 EN10219 rectangular steel hollow section carbon steel pipe

A few words Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. With an annual output of 10 million tons, Yuantai Derun is the largest manufacturer of ERW square pipes, RECTANGULAR TUBE, hollow pipes, galvanized pipes, straight submerged arc welded steel pipes and spiral welded pipes in China. Annual sales reached 15 billion US dollars. Yuantai Derun has 59 black ERW pipe production lines, 10 galvanized pipe production lines and 3 spiral welded pipe production lines. Square pipe 10 * 10 * 0.5mm to 1000 * 1000 * 60MM, RECTANGULAR STEEL HOLLOW SECTION 10 * 15 * 0.5mm to 800 * 1100 * 60MM, jcoe steel pipe φ 355.6-2000mm, spiral pipe Φ 219-2032mm, seamless pipe φ 21.3-820mm。 We have ISO9001 certification, ISO14001 certification, ISO45001 certification, EU CE EN10219/EN10210 system certification, French Classification Society BV certification, German DNV certification and Japanese JIS industrial standard certification. While ensuring quality, we are constantly reducing management costs and improving management efficiency. We are the first in the industry to adopt a national uniform quotation, while opening up the order cost calculation formula, which greatly benefits our partners and users. We are committed to providing excellent products and services to steel pipe users and are determined to make steel pipes more widely used in global economic development and construction and to make business easier for all our partners. We continue to extend the industrial chain, expand industrial clusters, form scale advantages, and continuously cultivate incremental markets, actively work with leading scientific research units and consulting institutions in the domestic steel industry, etc. to jointly establish Rectangular Steel Pipe Association and Industrial Innovation Alliance, gather industry wisdom and resources, cooperate extensively and deeply on the high-quality transformation and upgrading of Rectangular Steel Pipe industry, and make unremitting efforts for the green future of Rectangular Steel Pipe industry together. We are looking forward to cooperating with you sincerely for mutual benefit and win-win development and creating brilliance together!   Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd has the largest carbon steel pipe inventory in China, which can meet the direct purchase needs of customers. Welcome to contact Yuantai Derun, e-mail: sales@ytdrgg.com , real-time connection factory inspection or factory visit! Specification of square and rectangular hollow steel sections

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 pipe for 21 years,We have 59 domestic production lines of black high-frequency welded steel pipes, of which the 500 * 500mm straight out square pipe production line is the most advanced production line in China. In addition, the 200 * 200mm and 300 * 300mm square pipe straight out production lines are technicians with years of experience to ensure product quality.

02  COMPLETE  SPECIFICATIONS

OD（Outerus diameter）:10*10-1000*1000MM   10*15-800*1200MM

length:0.5-24M or according your requiredment

Thickness:0.5-60mm

 Radius Corner:The inner R is generally 1.5~2 times the wall thickness

Steel grade：Gr.A/B/C,S235/275/355/420/460,A36,SS400,Q195/235/355,STKR400/490,300W/350W

3  CERTIFICATION IS COMPLETE Yuantai derun steel pipe group 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 and large capacity of production Tianjin Yuantai Derun Steel Pipe Manufacturing Group has an annual production capacity of 10 million tons, of which the stock of conventional models and specifications can reach 200000 tons, which can meet the needs of customers who need steel pipe procurement urgently. Tianjin Yuantai Derun Steel Pipe Manufacturing Group has 80 technical patents. The company invests a lot of R&D funds every year. After 21 years of hard work, it has finally become a leading enterprise in the square and rectangular pipe industry. Here are the hot products our customers have bought. There are black square pipe, galvanized square pipe, resistance welded round pipe, galvanized round pipe, straight seam steel pipe, spiral welded pipe, seamless steel pipe, special-shaped pipe fittings, etc. The certification and honor of Tianjin Yuantai Derun Steel Pipe Manufacturing Group are also increasing year by year: European standard certification: EN10219 and EN10210 Japanese and Korean certification: JIS G3466 Bureau Veritas Certification: BV Det Norske Veritas Certification:DNV Singapore Construction Industry Certification FPC: BC1 Global green LEED certification: EPD, PhD ISO quality system management certification: ISO9001 ISO Environmental Management System Certification: ISO14001 International standard in the field of occupational health and safety management: ISO45001 National champion enterprise: rectangular tube single event China's top 500 manufacturing enterprises: 10 consecutive years Top 500 Private Enterprises in China: 10 consecutive years Credit China: credit benchmark enterprise Tianjin Yuantai Derun Steel Pipe Manufacturing Group has a national steel product laboratory.It has 80 patents for steel pipe products. Yuantedrui Group adheres to the combination of independent innovation and "brain", builds a technical cooperation platform with elite experts, scientific research institutions and companies to jointly carry out production, teaching and research, takes advanced technology as the starting point of cooperation, closely conducts strategic cooperation with domestic universities and research institutes, as well as foreign institutions and manufacturing enterprises engaged in research on rectangular tube products, and strives to build a "China Advanced Rectangular Tube Research Base". As a well-known square tube manufacturer in China, Yuantaiderun, together with the Metallurgical Industry Planning and Research Institute, launched the "Square Tube Industry Development and Cooperative Innovation Alliance" in May 2018. The alliance gathers excellent units and experts in domestic scientific research institutions, universities, steel smelting enterprises, pipe manufacturers, downstream construction, machinery manufacturing, bridge manufacturing and other subdivisions, and has 70 members at present, More than 10 well-known experts and scholars in the industry are committed to the cultivation of elite talents, hoping to gather industry wisdom and resources, establish a resource sharing talent guarantee, and improve the utilization rate of industry talent resources.

THE ONLY

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

THE QUALIFIED RATE OF PRODUCTS >100%

Tianjin Yuantai Derun Steel Pipe Manufacturing Group has its own digital logistics system, achieving the goal of reducing costs and improving efficiency. The company has built a lean digital management innovation application project, established an enterprise information base, built a digital production and processing management platform for discrete intelligent manufacturing, built a digital production and processing management platform, realized automatic production scheduling, enriched and optimized the process optimization suggestion decision-making information of the decision support system, and solved the problems of high personnel costs and low efficiency. The information base cooperates the product economy based on production and the service economy based on consumption, realizing the integration of decentralized manufacturing resources within the industry and the high synergy of the self owned core competitiveness of enterprises in the same industry, thus forming a manufacturing mode of efficiency innovation and driving the collaborative development of enterprises in the same industry. 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