Cold Rolled/Hot Rolled AISI 4130 4140 Rolled Stainless Steel Seamless/Round Tube/Welded Pipe

Product Overview

Our Cold Rolled/Hot Rolled AISI 4130 4140 Rolled Stainless Steel Seamless/Round Tube/Welded Pipe is a high - quality metal product designed to meet the diverse needs of various industries. Crafted with precision and using advanced manufacturing techniques, these tubes and pipes offer exceptional performance and durability.

Material Specification

• Grade: AISI 4130 and AISI 4140 are both chromium - molybdenum alloy steels. AISI 4130 contains approximately 0.28 - 0.33% carbon, 0.40 - 0.60% manganese, 0.80 - 1.10% chromium, and 0.15 - 0.25% molybdenum. AISI 4140 has a slightly higher carbon content (0.38 - 0.43%) along with similar amounts of other alloying elements. These compositions give the steel excellent strength, toughness, and wear resistance.
• Surface Treatment: The products undergo a complete surface treatment process. This treatment not only enhances the aesthetic appearance of the tubes and pipes but also provides protection against corrosion, oxidation, and other environmental factors. The smooth surface finish also reduces friction, which can be beneficial in applications where fluid flow or movement is involved.

Manufacturing Techniques

• Cold Rolling: Cold - rolled tubes and pipes are produced by passing the steel through a series of rollers at room temperature. This process results in a more precise dimensional accuracy and a smoother surface finish compared to hot - rolled products. Cold - rolled products also have improved mechanical properties, such as higher yield strength and hardness.
• Hot Rolling: Hot - rolled tubes and pipes are manufactured by heating the steel above its recrystallization temperature and then rolling it. This method is more suitable for producing large - diameter and thick - walled tubes and pipes. Hot - rolled products have a more uniform internal structure and are generally more ductile, making them ideal for applications where forming or bending is required.

Product Types

• Seamless Tubes: Seamless tubes are produced without any weld seams, which makes them stronger and more reliable in high - pressure and high - temperature applications. They have a continuous and homogeneous structure, reducing the risk of leakage and failure. Seamless AISI 4130 and 4140 tubes are commonly used in the automotive, aerospace, and oil and gas industries.
• Round Tubes: Our round tubes have a circular cross - section, which provides uniform stress distribution and is suitable for a wide range of applications. They can be used for structural purposes, as well as in fluid transportation systems.
• Welded Pipes: Welded pipes are made by joining two or more pieces of steel together using welding techniques. They are more cost - effective than seamless tubes and can be produced in various lengths and diameters. Welded AISI 4130 and 4140 pipes are often used in construction, machinery manufacturing, and general engineering applications.

Applications

• Automotive Industry: These tubes and pipes can be used in the manufacturing of engine components, suspension systems, and exhaust systems. Their high strength and heat resistance make them suitable for withstanding the harsh conditions in automotive engines.
• Aerospace Industry: In the aerospace field, our products are used for aircraft structural components, landing gear, and hydraulic systems. The excellent mechanical properties of AISI 4130 and 4140 ensure the safety and reliability of aerospace vehicles.
• Oil and Gas Industry: Seamless tubes are widely used in oil and gas exploration and production. They can be used for pipelines, well casings, and drilling equipment due to their high pressure and corrosion resistance.
• Construction Industry: Round tubes and welded pipes are used in building structures, such as bridges, frames, and support columns. Their strength and durability help to ensure the stability and safety of buildings.

Company Advantages

Our company, Jiangsu Zhonggongte Metallurgical Technology Co., Ltd., is a professional manufacturer established in 2022. We have an overseas office and an export share of above US$100 Million.

• Technical Team: Our technical team consists of numerous sales elites who are proficient in the specialized knowledge of special alloys. They can quickly explain the professional knowledge of our products to customers and continuously promote product iteration and upgrading.
• Market and Sales Team: Composed of experienced marketing and sales elites, they accurately grasp market dynamics and effectively expand our market share in regions including North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and our domestic market.
• Customer Service: We put customers at the center and provide 24 - hour uninterrupted high - quality service. Our services include providing detailed product information and samples, negotiating prices, processing orders, following up on production, arranging logistics, and handling after - sales service. We are committed to ensuring continuous improvement in customer satisfaction.
• Production Certification: We hold the ISO9001 production certification, which means that our production process strictly adheres to international quality management standards. This ensures that our Cold Rolled/Hot Rolled AISI 4130 4140 Rolled Stainless Steel Seamless/Round Tube/Welded Pipe meets the highest quality requirements and customer expectations.