ASTM round square welded ss pipe Q390D Q390E Q420D stainless steel pipe seamless tube

Square pipe is a name for square pipe and rectangular pipe, that is, steel pipe with equal and unequal side length. It is made of rolled strip steel after process treatment. Generally, the strip steel is unpacked, leveled, crimped and welded to form a round pipe, then rolled into a square pipe from the round pipe, and then cut into the required length.

Cold drawing: Cold drawing refers to the manufacturing process of optimizing and improving the cross section size, shape and performance of metal bars through multi-channel die cold extrusion.

    Seamless: Seamless refers to the production process of the pipe without welding, so as to form a consistent material and structure on      the  internal and external surfaces of the pipe.

    Square pipe: Square pipe refers to the pipe with a square or rectangular cross-section shape, which has high strength, stiffness and        stability.

Product information: size chart

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

Prodcut Features

1.High quality materials: Cold-drawn seamless rectangular tubes are made of high-quality steel or alloy materials, with excellent physical properties and chemical stability, suitable for a variety of harsh working environments.

2.Precision size: Through cold drawing processing, the square tube has high dimensional accuracy and accurate cross-section shape, which can meet the application field of precision size requirements for industrial production.

3.Smooth surface: The surface of the cold-drawn seamless square rectangular pipe is smooth, without obvious defects and surface oxidation, which is conducive to improving the fluid transport efficiency of the pipeline.

4.Strength and wear resistance: Rectangular tube has high strength and rigidity, can withstand high pressure and load, and has excellent wear resistance, prolonging service life.

Quality Control

1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.

2) National accredited. Laboratory with CNAS certificates.

3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.

4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK.

Application

1. Structural engineering: Cold-drawn seamless square rectangular pipe is widely used in construction, bridge, mechanical equipment and civil engineering and other fields. Its high strength and excellent weather resistance make it an ideal choice for bearing structures, supporting members and decorative materials.

2. Automotive manufacturing: Rectangular tubes are widely used in the automotive industry to manufacture chassis, frames, body structures and safety equipment. Its high strength and lightweight characteristics help improve the performance and fuel efficiency of the vehicle.

3. Machining: Cold-drawn seamless rectangular tubes can be used to manufacture machine parts, bearings and tools, and their precise dimensions and excellent surface quality improve processing efficiency and product quality.

4. Pressure vessels: The high strength and pressure resistance of rectangular tubes make them ideal for the manufacture of pressure vessels and piping systems, such as gas cylinders, oil pipelines and chemical equipment.

Company Profile

Hunan Yige Special Steel Science Technology Co., Ltd 

Hunan Yige Special Steel Science 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.