China Q690D square tube seamless round steel pipe free sample

China Q690D square tube seamless round steel pipe free sample

There is an increasing demand for high strength, corrosion resistance and reliable performance in today's engineering field. In this context, the Q690D seamless square tube emerges as an excellent building material. Q690D seamless square tube is a kind of pipe made of high-strength low-alloy structural steel, with excellent characteristics and a wide range of applications. It not only has excellent toughness, fatigue resistance and corrosion resistance, but also good weldability and machinability, making it an ideal choice for many engineering projects.

Product information:size chart

Q690D square tube

technological process:

1. incoming inspection

2. Head making(pressing,driving,cutting)

3. Rust removal and lubrication

4. Drawing(empty drawing or core lining)

5. Heat treatment(annealing,normalizing and tempering)

6. Mechanical test

7. Finishing(straightening and shaping)

8. Dimensional inspection

9. Head and tail cutting,weighing,packaging,warehousing and delivery

Features of Q690D square tube: 

1. High strength：The Q690D seamless square tube is made of high-strength low-alloy structural steel with high yield strength and tensile strength.

2. Corrosion resistance: Q690D seamless square tube after proper anti-corrosion treatment, can resist corrosion and oxidation erosion.

3. Good weldability: The Q690D seamless square tube has good weldability and can be connected and assembled by conventional welding methods.

4. Machinability: Q690D seamless square tube has good plasticity and machinability, can be cold bending, hot bending and cutting processing operations.

5. Fatigue resistance: Q690D seamless square tube has excellent fatigue resistance, which can maintain the reliability and stability of the structure under repeated load for a long time.

6. Good wear resistance: Q690D seamless square tube after proper treatment and alloy design, has high wear resistance, can resist friction, wear and erosion of abrasive particles.

Application: Q690D square tube

1. Building structure: Q690D seamless square pipe plays an important role in large building structures. For example, the Shanghai Tower in China, a super high-rise building, uses Q690D seamless square tube as the main structural material. This high-strength material makes the building resistant to wind pressure and earthquake forces, providing stable structural support.

2. Bridge engineering: In bridge construction, Q690D seamless square pipe is widely used to support and connect structures. For example, the Ottawa Grand Canal Bridge in Canada uses Q690D seamless square pipe as the main beam material of the bridge. Its high strength and good machinability enable the bridge to span long distances, withstand large loads, and maintain the stability and durability of the structure.

3. Oil and gas transmission pipeline: Q690D seamless square pipe is also widely used in the field of oil and gas transmission pipeline. For example, a pipeline in an oil exploitation project uses Q690D seamless square pipe as the main material. Its high strength, corrosion resistance and fatigue resistance ensure that the piping system can withstand the demands of high pressure and complex operating conditions, while reducing the need for maintenance and replacement.

Company profile:

Yige special Steel Co., Ltd 

Hunan Yige Special Steel Technology Co., LTD is a steel producing,processing,sales and logistics enterprise integrating Agricultural machinery square steel tube, special-shaped steel pipes,seamless pipes and other cold drawn materials. With more than 8 years of working experience, the company keeps in-depth cooperation with a number of steel upstream and downstream enterprises.The company can guarantee the quality of products from raw materials, producing process and other processes, and the price is also very competitive in the market.

Certificate display:

Quality Assurance,we are focused on the production of high quality.

Packing and delivery:

Loose package, Packaged in bundles(3Ton Max) , bundled pipes with two slings at the both end for easy loading and discharging, End with Plastic caps or as per requirement.

Cooperative partner:

SANY,SUNWARD,DOOSAN,ZOOMLION,CRRC,LEMKEN,ETC.

FAQ:

Q1:what can you buy from us?
A1:high-performance and high-precision of special-shaped steel pipes,seamless pipes and other cold drawn materials.

Q2: Can we visit your factory? 
A2: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.

Q3:Will you delivery the goods on time? 

A3:Yes,we promise to provide best quality products and delivery on time .Honesty is our company's tenet.

Q4: Can I get samples before order ?

A4: Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings.

Q5:How can I get a quotation from you ? 

A5:You can leave us message, and we will reply every message in time. Or we may talk on line.