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  • 4135 Seamless Steel Pipe
  • 4135 Seamless Steel Pipe
  • 4135 Seamless Steel Pipe
  • 4135 Seamless Steel Pipe
  • 4135 Seamless Steel Pipe

4135 Seamless Steel Pipe
ASTM A335 steel pipe may be hot finished or cold drawn and subjected to the following finishing heat treatment. The specification covers "chrome-molybdenum" seamless pipes with excellent corrosion resistance and high temperature tensile strength.

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Liaocheng Development Zone, Shandong Province

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+8619157166791

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lynn@hanjianggroup.com

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+8619157166791
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Product Parameters

Carbon Steel: Properties, Production, Examples and Applications4135 Steel Pipe

4135 steel pipe is an alloy structural steel pipe based on the standards of the American Society for Testing and Materials (ASTM). It is widely used in numerous industrial fields due to its excellent comprehensive properties.
Material Characteristics
  • Chemical Composition: Carbon (C) content ranges from 0.33% to 0.38%, providing a certain strength foundation. Silicon (Si) content is 0.15 - 0.35%, which helps with deoxidation and improves strength. Manganese (Mn) content is between 0.70% and 0.90%, enhancing the strength and toughness of the steel and improving hot - working performance. Phosphorus (P) content is ≤0.035%, and sulfur (S) content is ≤0.040%. Stringent control of these two impurity elements can reduce adverse effects on the steel's properties. Chromium (Cr) content is 0.80 - 1.10%, which improves the hardenability, hardness, and wear - resistance of the steel. Molybdenum (Mo) content is 0.15 - 0.25%, further enhancing hardenability, preventing temper brittleness, and increasing high - temperature strength.
  • Performance Advantages: After quenching and tempering (quenching + tempering), it can exhibit good comprehensive mechanical properties. Its tensile strength is ≥985MPa (100ksi), and the yield strength is ≥835MPa (85ksi), demonstrating high load - bearing capacity. The elongation after fracture is ≥12%, and the reduction of area is ≥45%, reflecting certain plasticity and toughness. The impact energy Aku is ≥63J, enabling it to perform well under impact loads. The hardness is ≤229HB, facilitating subsequent machining. Additionally, this steel has a high fatigue limit, making it suitable for long - term use under alternating load conditions. Moreover, in high - temperature environments, it has high creep strength and long - term strength, and the long - term working temperature can reach 500℃. However, its plasticity is moderate during cold deformation, and its weldability is relatively poor, which requires special attention during processing and use.
Execution Standards
  • International Standards: It complies with the ASTM A29/A29M - 04 standard, which specifies the general requirements for hot - wrought carbon and alloy steel bars. It also conforms to the ASTM A519 standard, which is applicable to seamless steel pipes for mechanical engineering. This standard has detailed specifications for various aspects of steel pipes, such as dimensions, tolerances, and materials.
  • Industry Certifications: In specific industries such as oil and gas, it may need to meet relevant industry standard certifications, such as certain specifications of the API (American Petroleum Institute), to ensure reliability and safety in harsh working environments.
Production Process
  1. Smelting: Usually, the electric arc furnace steel - making process is adopted to accurately control the addition of various alloying elements, ensuring the uniformity and stability of the steel's composition. During the refining process, impurities are further removed to optimize the quality of the molten steel.
  1. Forming: Seamless steel pipes are manufactured through hot - rolling or cold - drawing processes. The hot - rolling process can effectively improve the internal structure of the steel and enhance the comprehensive properties of the material, which is suitable for producing larger - sized steel pipes. The cold - drawing process enables the steel pipes to achieve higher dimensional accuracy and surface quality, and is often used for producing small - diameter steel pipes with high - precision requirements.
  1. Heat Treatment: Quenching and tempering treatment is a crucial step in enhancing the performance of 4135 steel pipes. The quenching temperature is generally around 850℃, and oil - cooling quenching is used to obtain a martensite structure in the steel, greatly increasing the strength and hardness. Subsequently, tempering treatment is carried out at around 550℃, with water - cooling or oil - cooling to eliminate quenching stress, improve toughness, and adjust the hardness to an appropriate range to obtain good comprehensive mechanical properties.
  1. Inspection: During the production process, strict quality inspection is required. 100% ultrasonic flaw detection is used to detect internal defects such as cracks and pores in the steel pipes. Hydrostatic pressure testing is carried out to ensure that the pressure - bearing capacity of the steel pipes meets the standard requirements. At the same time, the surface quality of the steel pipes is carefully inspected to ensure that there are no surface defects such as scratches and folds.
  1. Surface Treatment: To enhance the corrosion resistance and wear - resistance of the steel pipes, surface treatment can be carried out according to actual usage requirements. Common treatment methods include phosphating treatment to form a phosphate protective film on the surface of the steel pipes; galvanizing treatment to improve corrosion resistance by plating a layer of zinc on the surface; sandblasting treatment to improve surface roughness and enhance the adhesion of coatings, etc.
Application Fields
  • Aerospace: It can be used to manufacture some components of aircraft engines, such as shafts and gears. With its high strength and good fatigue performance, it ensures stable operation under high - load and high - speed harsh working conditions.
  • Energy and Power: In the fields of thermal power generation and nuclear power generation, it is used to manufacture important components such as the rotors and main shafts of steam turbines, as well as high - pressure pipelines. Its high creep strength and long - term strength in high - temperature environments can ensure the long - term reliable operation of equipment.
  • Mechanical Manufacturing: It is widely used in manufacturing various mechanical transmission components, such as the drive shafts of vehicles and the heavy - load gears of large - scale mechanical equipment, meeting the strict requirements for material strength, wear - resistance, and fatigue life under high - load conditions.
  • Petroleum and Chemical Industry: It can be used as drill pipes and casings in oil extraction, as well as pipelines for high - pressure reaction vessels in chemical equipment. In complex chemical media and high - pressure environments, it exerts its good comprehensive properties to ensure production safety and stability.
Specification Range
  • Outer Diameter: The common outer diameter range is generally 10 - 610mm, and special specifications can be customized according to actual engineering requirements. Common specifications include 10mm, 16mm, 25mm, 38mm, 57mm, 89mm, 108mm, 159mm, 219mm, 325mm, 426mm, 530mm, 610mm, etc.
  • Wall Thickness: The wall - thickness range is usually between 1 - 50mm, and can be flexibly adjusted to meet the requirements of different pressure levels and usage scenarios. Common wall - thickness specifications include 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, 40mm, 50mm, etc.
  • Length: The standard length is generally 6 - 12m, and fixed - length or multiple - length can also be provided according to customer orders to meet the needs of different engineering installations.

Carbon Steel Description

Product nameSeamless pipe
Technical standardCold Rolled /Hot Rolled
Thickness0.6 - 30 mm or customized
Length12M, 6m or customized
StandardEN,API, ISO9001
API, ISO9001Q195/Q235/Q345
ApplicationWater engineering, petrochemical industry, chemical industry, electric power industry,agricultural irrigation
Surface treatmentGalvanized black and color paintingTransparent oil ,anti-rust oilAccording to clients requirement
PackageStandard Seaworthy Package--wooden Pallet
Delivery timeWithin 3 days for our stock size, 10-30 days for our production


Chemical Composition

ElementContent Range
Carbon (C)0.33 - 0.38%
Silicon (Si)0.15 - 0.35%
Manganese (Mn)0.70 - 0.90%
Phosphorus (P)≤0.035%
Sulfur (S)≤0.040%
Chromium (Cr)0.80 - 1.10%
Molybdenum (Mo)0.15 - 0.25%
Product Display

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Product Application

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Product Packaging

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Factory Display

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FAQ

Q:What about your price?

A:Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products.

Q:Can I go to your factory to visit?

A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:Does the product have quality inspection before loading?

A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely.

Q:How about the delivery time?

A:Within 3-15 days after we confirm you requirement.

Q:What is your terms of payment ?

A:T/T, L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me.

Q: Do you provide samples?

A:Yes,we could offer the sample for you to test but please pay freight fee.

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A:We consider honest as the life of our company, we can tell you the contact information of our some other clients for you to check our credit.Besides, there is trade assurance from Alibaba, your order and money will be well guaranteed.

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