{“ARInfo”:{“IsUseAR”:false},”Version”:”1.0.0″,”MakeupInfo”:{“IsUseMakeup”:false},”FaceliftInfo”:{“IsChangeEyeLift”:false,”IsChangeFacelift”:false,”IsChangePostureLift”:false,”IsChangeNose”:false,”IsChangeFaceChin”:false,”IsChangeMouth”:false,”IsChangeThinFace”:false},”BeautyInfo”:{“SwitchMedicatedAcne”:false,”IsAIBeauty”:false,”IsBrightEyes”:false,”IsSharpen”:false,”IsOldBeauty”:false,”IsReduceBlackEyes”:false},”HandlerInfo”:{“AppName”:2},”FilterInfo”:{“IsUseFilter”:false}} Cold-rolled seamless pipe Focusing on seamless steel pipes for 22 years, we are the source factory and look forward to cooperation. {“ARInfo”:{“IsUseAR”:false},”Version”:”1.0.0″,”MakeupInfo”:{“IsUseMakeup”:false},”FaceliftInfo”:{“IsChangeEyeLift”:false,”IsChangeFacelift”:false,”IsChangePostureLift”:false,”IsChangeNose”:false,”IsChangeFaceChin”:false,”IsChangeMouth”:false,”IsChangeThinFace”:false},”BeautyInfo”:{“SwitchMedicatedAcne”:false,”IsAIBeauty”:false,”IsBrightEyes”:false,”IsSharpen”:false,”IsOldBeauty”:false,”IsReduceBlackEyes”:false},”HandlerInfo”:{“AppName”:2},”FilterInfo”:{“IsUseFilter”:false}} High-precision cold-rolled seamless pipe High-precision cold-rolled seamless pipe High-precision cold-rolled seamless pipe Cold-rolled special-shaped pipe Product Introduction Introduction of cold-rolled seamless pipe: The cold-rolled seamless pipe adopts the cold working technology, based on the high-quality seamless steel pipe blank, and is rolled and deformed by the cold rolling equipment at room temperature. The outer diameter and wall thickness are precisely controlled in the process, and the dimensional accuracy is extremely high. The cold rolling process smooths the inner and outer surfaces of the tube, reduces roughness, refines metal grains, and greatly improves strength, toughness and wear resistance.
Features of cold-rolled seamless pipe：

• High-precision dimension: Using advanced cold rolling process, the outer diameter and wall thickness of the pipe are extremely accurate, and the tolerance can be controlled in a very small range.
• Excellent surface quality: The inner and outer surfaces of cold-rolled seamless tubes are smooth as mirrors, with surface roughness as low as Ra0.2 – Ra0.4μm, and almost no defects such as oxide scale, cracks, and folding.
• Good mechanical properties: In the cold rolling process, the internal structure of the metal is optimised, and the grain is refined, so that the pipe has high strength, high toughness and good wear resistance.
• Variety of materials: According to customer needs, we can provide cold-rolled seamless pipes in a variety of materials, including carbon steel, alloy steel, etc.

Application of cold-rolled seamless pipe： The cold-rolled seamless pipes produced by our company are mainly used in the following fields:

• Petrochemical industry: In the process of oil and natural gas exploitation, transportation and refining, cold-rolled seamless pipes are used in oil well pipes, oil and gas pipelines, chemical reactor pipelines, etc.
• Machinery manufacturing: It is widely used in various fields of the machinery manufacturing industry, such as hydraulic cylinder barrels, cylinder barrels, transmission shafts, precision mechanical parts, etc.
• Electric power industry: in thermal power generation, nuclear power and other fields, such as boiler pipes, superheater tubes, condenser tubes, etc., used to transport high-t
• Automotive manufacturing: Widely used in key components of automobiles, such as engines, transmissions, braking systems, etc., including engine intake and exhaust pipes, drive shaft tubes, brake fluid lines, etc.
• Construction Engineering: Used for building water supply and drainage systems, central air conditioning ducts, fire protection pipelines, etc., providing a reliable fluid transport channel.
• Aerospace: Cold-rolled seamless pipes, with their high strength, lightweight, and good fatigue resistance, are used to manufacture hydraulic system pipelines, engine components, etc., for airplanes, providing crucial support for the development of the aerospace industry.

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 in Germany
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 deliver the goods so quickly, the goods arrived on time, and it did not delay our construction progress 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 our requirements, the price is fair, 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 very high, which fully meets the needs of our steel structure project. We look forward to more cooperation opportunities in the future!”