Cold Drawn Steel Tube Cold Drawn Seamless Tubing for Hydraulic System Applications

• Customization: Available
• Certification: GS, ISO9001, GB8713 GB/T 3639 DIN2391 En10305 Astma519
• Pressure: 300-400 Bar
• Model NO.: Customize
• Work Temperature: -30~+80 Degree Centigrade
• Material: 20#, 45#,16mn(Q355b,S355),25mn,27simn,St45,E355
• Warranty: 14months
• Color: as Customer′s Requirement
• Transport Package: as Customer′s Requirement
• Specification: customize
• Trademark: WTJX
• Origin: Shandong, China
• HS Code: 7304319000
• Production Capacity: 300, 000 PCS/Year

Product Description

Product Description

Our company mainly produces hydraulic cylinders, high-precision cold-drawn pipes, and inner-hole boring and rolling steel pipes. Our products are widely used in hydraulic cylinders, engineering machinery, oil pipelines, textile machinery, gas cylinders, etc. The company is well-equipped and has excellent technology. It has 3 sets of cold-drawn units with drawing forces of 150T, 250T, and 600T, which can meet the drawing processing of pipe diameters ranging from φ45-630mm.

Specification

Manufacturing Technique of Cold-Drawn Seamless Tubes

Cold drawing is a precision manufacturing process used to create seamless pipes and tubes. It involves several stages, each of which plays a crucial role in producing tubes with the desired properties.


Here is a step-by-step breakdown of the manufacturing process:

1. Billet Preparation:

• The process begins with the selection of high-quality raw materials, typically steel or alloy steel billets.
• The billets are inspected for defects and then cut to the desired length.

2. Piercing:

• The prepared billet is heated to a suitable temperature to facilitate piercing.
• A piercing rod with a pointed end is used to create a hole through the center of the billet. This initial hole is called a "bloom."

3. Elongation:

• After piercing, the bloom is elongated to reduce its diameter and increase its length.
• This process is achieved through a series of rolling operations, which involve passing the bloom through multiple sets of rolls.

4. Cold Drawing:

• The elongated tube, known as a "hollow," is then cold drawn through a die to further reduce its diameter.
• This process is performed at room temperature, ensuring that the tube maintains its seamless construction.

5. Annealing:

• To relieve any stresses induced during cold drawing and improve the tube's mechanical properties, it undergoes an annealing process.
• The tube is heated to a specific temperature and then slowly cooled.

6. Cutting and Finishing:

• After annealing, the cold-drawn seamless tube is cut to the desired length.
• The ends of the tube are finished to meet specific requirements, such as chamfering or threading.

7. Quality Control:

• Stringent quality control measures are applied at every stage of production to ensure the final product meets industry standards and customer specifications.

8. Surface Treatment:

• Depending on the application, the tube may undergo surface treatments such as polishing, coating, or plating for added protection and functionality.

9. Inspection and Testing:

• The finished cold-drawn seamless tubes undergo comprehensive inspection and testing, including dimensional checks, non-destructive testing, and material analysis.

10. Packaging and Shipping:

• Finally, the tubes are carefully packaged to prevent damage during transportation and shipped to customers, ready for use in various applications.

Applications of Cold-Drawn Seamless Tubes

 The versatility of cold-drawn seamless tubes lends itself to a wide range of applications across various industries.

Company Profile


Shandong Wantong Hydraulic Co., Ltd. (Stock Code: 830839), founded in June 2004, is a domestic medium and high pressure hydraulic cylinder supplier integrating R&D, production, sales and service. Its main products include three series of hydraulic cylinders for dump trucks, hydraulic cylinders for mechanical equipment and hydropneumatic springs.

The company's management team and main technical personnel are stable. We has constantly innovated from the actual needs of customers, has gradually positioned the medium and high-end market, and has provided high-quality products for customers in automobile, coal mine, petroleum, engineering machinery and other industries with high-quality service.

Production Equipment 

There is one pickling, phosphating, and saponification production line, which has acid mist treatment in accordance with environmental protection requirements and can meet the processing of 200 tons of steel pipes per shift. At the same time, it is equipped with 2 heat treatment furnaces and 2 high-precision multi-roller straightening machines, with a straightening accuracy of 0.3mm/M. There should be multiple inner-hole scraping and rolling equipment to meet the boring and rolling processing within a diameter of 40-630mm and a length of 6000mm.

Quality Inspection

Our company has abundant technical force and perfect testing means. By making wide technical and business cooperation with many related enterprises, universities, colleges and institutes both at home and abroad, and employing senior engineers and software engineers, we have greatly strengthened and improved our designing, processing, and testing abilities.

Certificate And Our Customers


Domestic Marketing Locations
The company's products are widely sold in Shandong, Shaanxi, Shanxi, Henan, Hebei, Hubei, Beijing, Inner Mongolia, Gansu and other more than 20 provinces, municipalities and autonomous regions.

Foreign Marketing Locations
Our products are exported to the United States, Canada, Mexico, Russia, South Africa, Indonesia and other Europe, America, South America, Southeast Asia.
 

Why Choose Us

When it comes to sourcing cold-drawn seamless tubes for your business, choosing the right supplier is crucial. Anand Seamless Ltd is a trusted name in the industry, and here are compelling reasons why you should consider us for your tube needs:

1. High Quality and Reasonable Price:

• We take pride in delivering products of uncompromising quality while maintaining competitive pricing.
• Our commitment to quality ensures that you receive seamless tubes that meet or exceed industry standards.

2. High Strength and Toughness:

• Our tubes are engineered to withstand the most demanding conditions, offering exceptional strength and toughness.
• Whether it's for heavy machinery or critical infrastructure, our tubes deliver the performance you can rely on.

3. Good Machining Performance and Surface Finish:

• Our tubes are designed with precision in mind, making them ideal for machining processes.
• The surface finish of our tubes meets strict quality standards, ensuring compatibility with various applications.

4. Easy to Weld and Bend:

• We understand the importance of ease of fabrication. Our tubes are designed to be weld-friendly and can be bent without compromising structural integrity.

5. Delivery on Time:

• Timely delivery is a cornerstone of our service. We understand that your projects rely on punctual supplies, and we consistently meet delivery deadlines.