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Cold-drawn seamless pipe Focusing on seamless steel pipes for 22 years, we are the source factory and look forward to cooperation. Cold-drawn seamless pipe Cold-drawn seamless pipe Cold-drawn seamless pipe Cold Rolled Precision Bright Steel Tube Cold-drawn seamless pipe Product Introduction Introduction to cold-drawn seamless pipe: The cold-drawn seamless pipe adopts the cold-drawn process, based on the high-quality blank, and utilises a special mould and tensile force at room temperature to make the blank forcibly pass through the mould and accurately control the size and shape. This process optimises the surface quality and internal structure, resulting in a smooth surface, dense grains, and greatly improved strength, toughness, and fatigue resistance, and stable operation in harsh environments. Cold-drawn seamless pipe features:

• Ultra-high precision size: outer diameter tolerance ±0.03mm, wall thickness tolerance ±0.02mm, to meet the needs of precision industry and reduce processing costs.
• Excellent surface quality: surface roughness Ra0.1 – Ra0.3μm, smooth and defect-free, low resistance to convey fluid, corrosion resistance and long life.
• Excellent mechanical properties: Able to withstand high pressure, impact, suitable for high-performance fields.
• Rich material selection: provide carbon steel, alloy steel and other materials to meet the needs of different industries.

Cold-drawn seamless pipe use: The seamless pipes produced by our company are mainly used in the following fields:

• Aerospace: It is widely used in key parts such as aero engines, aircraft hydraulic systems, and spacecraft structural parts, and lays a solid foundation for the safe flight and high-performance operation of aircraft with high strength, light weight and excellent fatigue resistance.
• Petrochemical industry: In the process of oil and natural gas exploitation, transportation and refining, it is used for oil well pipes, oil and gas pipelines, chemical reactor pipelines, etc. Its high strength, corrosion resistance and good sealing performance can effectively resist the erosion of high pressure, high temperature and corrosive media, and fully ensure the safe and stable operation of petrochemical production.
• Machinery Manufacturing: It plays an indispensable role in various fields of the machinery manufacturing industry, such as hydraulic cylinder barrels, cylinder barrels, transmission shafts, precision mechanical parts, etc. The high-precision size and excellent mechanical properties make it perfect to meet the requirements of high-precision processing and use of mechanical parts, and significantly improve the performance and reliability of mechanical equipment.
• Automobile manufacturing: It is widely used in key components such as automobile engines, transmissions, and braking systems, such as engine intake and exhaust pipes, transmission shaft pipes, brake oil pipes, etc. Cold-drawn seamless pipes can accurately meet the strict standards of the automobile manufacturing industry for the dimensional accuracy, strength and corrosion resistance of tubes, providing strong support for the excellent performance and driving safety of automobiles.

Specifications and Standards

Specification	Details
Outer Diameter Range	20~325mm
Wall Thickness Range	2~40mm
Length Range	Customised lengths according to customer requirements.
Material Grades	Q345b, 20cr, 40cr, 15crmo. 42crmo, 27simn, 12cr1mov, 15crmog. 12cr1movg, etc.
Standards	ASTM A335、 GB/T8163、EN 10297-1

Product advantages 

• Diversified and all-round production system ：We have built a diversified production system, covering advanced production lines such as hot expansion, hot rolling, cold rolling, cold drawing, centrifugal casting, CNC machine tools, etc. Each production line is equipped with cutting-edge equipment and mature technology, accurately controls the production process, and efficiently produces high-precision and high-quality products to meet the diverse needs of various industries.
• Direct supply from the source factory: As the source factory of centrifugal casting, we eliminate all intermediate links and directly deliver the products from the factory to the customer. Dramatically reduced product costs, allowing you to obtain high-quality centrifugal casting products at a low price, as well as more direct and rigorous control of the production process to ensure consistent product quality.
• Strict quality control system: We build a whole-process quality control system. Strict testing when purchasing raw materials to ensure that the ingredients and performance meet the standards; Multi-channel detection gates are set up in production to monitor the dimensional accuracy, mechanical properties and surface quality of products in real time; The product is fully inspected before leaving the factory, so that you can rest assured.
• Perfect after-sales: We will pay regular visits to help customers solve problems and continue to improve.

Customer feedback Customer name: An oil company
Country: Germany
Feedback: “I am very satisfied with the delivery time, I originally thought that the custom specifications would delay the time, but I didn’t expect you to ship the goods so quickly. The goods arrived in time, and our construction progress was not delayed at all, thank you!” Customer name:Shipyard
Country:Japan
Feedback:“The quality of the goods sent every time is very stable, the specifications are the same as what we require, the price is also fair, and the cost performance is quite high, and we will continue to cooperate.” Customer industry: Construction engineering company
Country: Canada
Feedback： “The tube was used as soon as I received it, and the quality was very good, the wall thickness was uniform, and the surface was smooth and there were no blemishes. The people in our project department said that this batch of goods is good, and they will ask you to order it if there is a demand in the future.”
Customer industry: Machinery manufacturing
Country:United Kingdom
Feedback： “This is our first time working with your company, and we are very satisfied with the product quality and service attitude. The dimensional accuracy of the seamless steel pipe is high, which fully meets the needs of our steel structure project. Looking forward to more cooperation opportunities in the future!”