High-Strength Steel Tubes Designed for Extreme Stress Applications

• Customization: Available
• After-sales Service: Free
• Warranty: 1 Year
• Model NO.: DOM Tube
• Type: Welded
• Technique: ERW
• Material: Carbon Steel
• Surface Treatment: Oiled
• Usage: Hydraulic/Automobile Pipe, Food/Beverage/Dairy Products, Machinery Industry, Special Purpose
• Section Shape: Round
• Standard: ASTM 513 Type 5 or En 10305-2
• Od: 15-75 mm or 0.5-3 in.
• Wall Thickness: 1.5-6mm or 0.06-0.23 in.
• Customized: Support
• Trade Terms: EXW, Fob, CFR, CIF
• Length: 5.5-5.8 M
• Transport Package: Bundle/Wooden Box
• Specification: OD 3in(76.3mm) under
• Trademark: Bluesky-pipe
• Origin: Ningde
• HS Code: 7306309000
• Production Capacity: 50000 Ton/Year

Product Description

Product Description

DOM tubing, or Drawn Over Mandrel tubing, represents the pinnacle of high-strength steel tube manufacturing. Crafted through an advanced cold-drawing technique, it is not merely a steel type but a sophisticated method that elevates pre-existing electric resistance welded (ERW) tubing. The process involves elegantly pulling the steel tube through a precision die and over a mandrel, culminating in a tube with unrivaled dimensional accuracy, smooth surfaces, and superior mechanical characteristics.

After the meticulous cold drawing, DOM tubing can undergo thermal treatment to tailor its mechanical attributes, enhance machinability, and bolster toughness, ensuring it meets specific application needs with perfection.

 

Introduction to the Excellence of DOM Tubing
DOM tubing emerges from electric resistance welded (ERW) tubes, often known as 'mother tubes,' which are transformed into their final refined form through the precise cold drawing process.
Prior to the drawing stage, mother tubes bask in a phosphate bath that efficiently removes scale and imparts lubricity, pivotal for prolonging the life of the dies during the drawing operation.
DOM tubing is typically crafted to the exacting standards of ASTM A513 Type 5. European standards such as 10305-2 are also applicable, ensuring global compatibility.
Among the popular DOM round tube grades are the exceptional 1020 and 1026, renowned for their quality and reliability.

Although DOM tubing starts as welded, the advanced drawing process renders the weld seam nearly invisible, resulting in a seamless finish with robust strength.
Unrivaled Advantages of DOM Tubing

Precision Mastery: DOM tubing delivers unmatched tight tolerances on outside diameter (OD), inside diameter (ID), and wall thickness, though precision is guaranteed for two of the three dimensions at any given time, ensuring superior quality.
Flawless Surface Finish: The manufacturing process achieves an immaculate surface finish, a critical feature for applications that demand the utmost precision and aesthetic excellence.
Perfect Concentricity: DOM tubing ensures maximum concentricity with minimal wall variation, making it a premium, cost-effective choice for challenging applications that cannot compromise on quality.

Exceptional High Strength:The cold-working process significantly enhances the mechanical properties of the steel, rendering it immensely strong and exceptionally durable for rigorous applications.

Minimal Additional Processing Edge:DOM steel tube is not only easily machinable but also requires minimal cleanup in downstream processes, offering significant cost-saving benefits to manufacturers.

Versatile Applications of DOM Tubing

Thanks to its exceptional qualities, DOM steel tube is the preferred material in the most exacting applications demanding high internal pressure, rotational, or cyclical workloads, including:

· Automotive, Truck, and Motorcycle Components:Applications such as roll cages, bushings, suspension components, steering columns, bearings, motorcycle frames and forks, and other critical parts benefit from DOM tubing's superior attributes.
· Hydraulic Cylinders:Its smooth inner surface and formidable strength make it the ideal choice for hydraulic applications requiring reliability and efficiency.

· Construction:Employed in structural elements, railings, and other areas where unmatched strength and precision are paramount.
· Industrial Machinery:Widely used in varied applications where a robust, accurate, and dependable tube is necessary.

· Fitness Equipment: Exemplary for the dynamic balance test of treadmill drums, reflecting its versatility.

· Furniture: Chosen for its smooth outer surface and strength, ideal for creating elegant and durable furniture.

Product Parameters

OD	15-75 mm or 0.5-3 in.	Wall Thickness	1.5-6mm or 0.06-0.23 in.
Standard	ASTM A513 Type or EN 10305-2	Customized	Support
Steel Grade	1010,1020,1035,1040,1340,1524,4130,4140, E195,E235,E275,E355,as customers' requirments
Package	Wooden case,Waterproof Woven Bag,as customers' requirments	Delivery time	25-40 days
Payment Term	T/T,L/C	Trade Terms	EXW,FOB,CFR,CIF
MOQ	1 ton	Surface Treatment	Oil,Phosphating,Polishing

ASTM A513 Type 5
OD Size Range in.[mm]	OD		ID
0.500 to 1.699             [12.70 to 43.75]	0.005 [0.13]	0.000 [0.00]	0.000 [0.00]	0.005  [0.13]
1.700 to 2.099              [43.18 to 53.31]	0.006 [0.15]	0.000 [0.00]	0.000 [0.00]	0.006 [0.15]
2.100 to 2.499              [53.34 to 63.47]	0.007 [0.18]	0.000 [0.00]	0.000 [0.00]	0.007 [0.18]
2.500 to 2.899    [63.50 to 73.63]	0.008 [0.20]	0.000 [0.00]	0.000 [0.00]	0.008  [0.20]

EN 10305-2  Sizes and tolerance

 

ASTM A513 DOM Tubing  Mechanical properties
DOM Tubing
Steel Grade	Rm(Mpa)	Reh(Mpa)	Elongation(%)	RB(min)
1010	415	345	5	73
1020	480	415	5	80
1035	620	550	5	90
1340	655	585	5	90
1524	620	550	5	90
4130	655	585	5	90
4140	760	690	5	90
DOM Stress-Relieved Tubing
1010	380	310	12	68
1020	450	380	10	75
1035	585	515	10	85
1340	620	550	10	87
1524	585	515	10	85
4130	620	550	10	87
4140	725	655	10	90

EN 10305-2 Mechanical properties
Steel Grade	Minimum values for the d elivery condition
	+C	+LC	+SR	+A	+N
	Rm(Mpa)/A%	Rm(Mpa)/A%	Rm(Mpa)/Reh(Mpa)/A%	Rm(Mpa)/A%	Rm(Mpa)/Reh(Mpa)/A%
E155	400/6	350/10	350/245/18	260/28	270~410/155/28
E195	420/6	370/10	370/260/18	290/28	300~440/195/28
E235	490/6	440/10	440/325/14	315/25	340~480/275/25
E275	560/5	510/8	510/375/12	390/22	410~550/275/22
E355	640/4	590/6	590/435/10	45022	490~630/355/22

Packaging & Shipping

Company Profile

 

FAQ

 

Q: Are you trading company or manufacturer?
A: We are professional manufacturer for steel pipes,and our company also is a very professional and technical foreign trade company for steel products. We have more export experience with competitive price and best after-sales service. Apart from this,we can provide a wide range of steel products to meet the requirement of customer.

Q:Will you delivery the goods on time?
A: Yes,we promise to provide best quality products and delivery on time no matter if the price change lot or not. Honesty is our company's tenet.

Q: Do you provide samples ? is it free or extra?
A: The sample could can provide for customer with free,but the freight will be covered by customer account. The sample freight will be returned to customer account after we cooperate.

Q: How can I get your quotation as soon as possible?
A: The email and fax will be checked within 24 hours,meanwhile,Wechat and WhatsApp will be online in 24 hours. Please send us your requirement and order information,specification(Steel grade,size,quantity,destination port),we will work out a best price soon.

Q: Do you have any certifications?
A: Yes,that's what we guarantee to our clients. we have IS09000,IATF16949 certinicate,ISO 14001 certificates etc.Our products are of high quality and we have professional engineers and development team.

Q: What is your terms of payment?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipmenit or paid against copy of B/L within 5 working days. 100% Irrevocable L/C at sight is favorable payment term as well.

Q: Do you accept the third party inspection?
A: Yes absolutely we accept.