• Carbon Seamless Steel Pipe from CNBM Group System 1
  • Carbon Seamless Steel Pipe from CNBM Group System 2
  • Carbon Seamless Steel Pipe from CNBM Group System 3
Carbon Seamless Steel Pipe from CNBM Group

Carbon Seamless Steel Pipe from CNBM Group

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
30 m.t.
Supply Capability:
12000 m.t./month

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 1、Structure of Carbon Seamless Steel  Pipe API 5L of 4 Inch

Seamless pipe is formed by drawing a solid billet over a piercing rod to create the hollow shell.

As the manufacturing process does not include any welding, seamless pipes are perceived to be stronger and more reliable.

Historically seamless pipe was regarded as withstanding pressure better than other types, and was often more easily available than welded pipe.

 

Standard: GB3087: Seamless Steel Tubes for Low and Medium Pressure Boiler

 

2‍‍Main Features of the Seamless Pipe API 5L of 4 Inch

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price 

 

3Seamless Pipe API 5L of 4 Inch Specification

Standard

GB, DIN, ASTM

ASTM A106-2006, ASTM A53-2007

Grade

10#-45#, 16Mn

10#, 20#, 45#, 16Mn

Thickness

8 - 33 mm

Section Shape

Round

Outer Diameter

133 - 219 mm

Place of Origin

Shandong, China (Mainland)

Secondary Or Not

Non-secondary

Application

Hydraulic Pipe

Technique

Cold Drawn

Certification

API

‍Surface Treatment

factory state or painted black

‍Special Pipe

API Pipe

Alloy Or Not

Non-alloy

Length

5-12M

Outer Diameter

21.3-610mm

Grade 

20#, 45#, Q345, API J55, API K55, API L80, API N80, API P110, A53B

Standard

ASME, ASTM

 

 

4Packaging & Delivery

Packaging Details:

seaworthy package,bundles wrapped with strong steel strip

Delivery Detail:

15-30days after received 30%TT

 

5FAQ of Seamless Pipe API 5L of 4 Inch:  

①How is the quality of your products?
    Our products are manufactured strictly according to national and internaional standard, and we take a test 
on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.

②How about price?
    Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

③Why should you chose us?
    Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.

 

6‍‍Seamless Pipe API 5L of 4 Inch Images ‍‍

Carbon Seamless Steel Pipe from CNBM Group

Carbon Seamless Steel Pipe from CNBM Group

Carbon Seamless Steel Pipe from CNBM Group

 

Q:What are the different standards for steel pipes?
Steel pipes are subject to various standards that guarantee their quality and compatibility in different applications. Some commonly used standards include: 1. ASTM (American Society for Testing and Materials): In the United States, ASTM standards are extensively used to specify different types of steel pipes, such as seamless and welded pipes. These standards cover dimensions, mechanical properties, and general requirements for steel pipes. 2. API (American Petroleum Institute): API standards are specifically tailored for the oil and gas industry. They provide guidelines for manufacturing, testing, and inspecting steel pipes used in oil and gas exploration, production, and transportation. 3. DIN (Deutsches Institut für Normung): DIN standards are widely adopted in Europe and outline specifications for various steel pipe types, including seamless, welded, and cast iron pipes. These standards cover dimensions, materials, and technical delivery conditions for steel pipes used across industries. 4. BS (British Standards): In the United Kingdom, BS standards are widely utilized for steel pipes in construction, engineering, and other sectors. They provide guidelines for dimensions, materials, and manufacturing processes for steel pipes. 5. JIS (Japanese Industrial Standards): JIS standards are extensively used in Japan and define specifications for different types of steel pipes, including seamless, welded, and cast iron pipes. These standards cover dimensions, materials, and technical delivery conditions for steel pipes used in various industries. 6. ISO (International Organization for Standardization): ISO standards are globally recognized and provide specifications for steel pipes used in diverse industries. They cover dimensions, materials, testing, and quality control requirements for steel pipes. It is crucial to note that specific industries and applications may have unique requirements. Therefore, it is essential to refer to the relevant standard for each specific use case. Complying with these standards ensures the safety, reliability, and compatibility of steel pipes in their respective applications.
Q:Can steel pipes be threaded?
Yes, steel pipes can be threaded.
Q:What are the different methods of joining steel pipes for high-pressure applications?
Some of the different methods of joining steel pipes for high-pressure applications include welding, threaded connections, flanged connections, and mechanical couplings. Welding involves fusing the pipes together using heat, making it a strong and permanent connection. Threaded connections involve screwing the pipes together using threads on the ends, which can be easily assembled and disassembled. Flanged connections involve using flanges and bolts to connect the pipes, providing a secure and leak-proof connection. Mechanical couplings use mechanical devices such as clamps or compression fittings to join the pipes, allowing for quick and easy installation and removal.
Q:What's the difference between straight steel pipe and seamless steel pipe?
Observe whether there is weld seam. Welded pipe without treatment, there are obvious weld, there are bulges, like scars. A better point will shave off the weld, but there is a distinct difference between the eye and the eye. Also a small number of pipe will be processed after cold rolling, surface roughness and accuracy are relatively high, may be counterfeit seamless pipe sales. Careful observation will still show that the pipe wall will have a continuous spiral, metal luster slightly brighter, that is, the original welding seam, metallographic structure and other parts of the difference. To tell the truth, the layman would have to observe that it might be a little difficult.
Q:What is the difference between steel pipes and fiberglass pipes?
The main difference between steel pipes and fiberglass pipes lies in their composition and properties. Steel pipes are made of metal and are known for their strength, durability, and resistance to high temperatures and pressure. They are commonly used in industrial settings and for transporting liquids and gases. On the other hand, fiberglass pipes are made of glass fibers embedded in a resin matrix, providing them with excellent corrosion resistance, lightweight properties, and insulation capabilities. Fiberglass pipes are often used in applications where corrosion is a concern, such as in chemical processing plants or wastewater treatment facilities.
Q:What are the common methods for inspecting the condition of steel pipes?
There are several common methods for inspecting the condition of steel pipes. These methods aim to identify any defects or potential issues that could affect the integrity of the pipes. 1. Visual Inspection: This involves a thorough visual examination of the pipes to identify any visible signs of damage such as corrosion, cracks, or leaks. Inspectors may use tools such as flashlights, mirrors, or borescopes to access hard-to-reach areas. 2. Ultrasonic Testing: This method uses high-frequency sound waves to detect defects within the steel pipes. A transducer is used to emit sound waves, and any disruptions or reflections in the waves can indicate potential issues such as cracks or thinning of the pipe walls. 3. Magnetic Particle Testing: This technique is primarily used to detect surface cracks or defects in steel pipes. A magnetic field is applied to the pipe, and fine iron particles are then applied to the surface. The particles will gather at any areas where there are surface defects, making them easily visible. 4. Eddy Current Testing: This non-destructive testing method is used to detect surface and near-surface defects in steel pipes. It involves passing an alternating current through a coil, which induces eddy currents in the pipe. Any disruptions or changes in the eddy currents can indicate defects such as corrosion or cracks. 5. Radiographic Testing: This method uses X-rays or gamma rays to inspect the internal structure of steel pipes. X-ray film or a digital detector is placed on one side of the pipe, while the X-ray source is placed on the other side. The rays penetrate the steel, and any irregularities or defects can be identified on the film or through digital imaging. 6. Dye Penetrant Inspection: This technique is used to detect surface-breaking defects in steel pipes. A dye penetrant is applied to the surface of the pipe, and after a specified period, a developer is used to draw out the dye from any defects. The dye will make the defects easily visible. These methods, either individually or in combination, provide a comprehensive inspection of steel pipes, ensuring their reliability and safety in various industries such as oil and gas, construction, and manufacturing.
Q:Are steel pipes suitable for transporting fluids?
Yes, steel pipes are suitable for transporting fluids. They have high tensile strength, durability, and resistance to corrosion, making them an ideal choice for transporting various fluids, including water, oil, gas, and chemicals, over long distances. Steel pipes are commonly used in industries such as oil and gas, water treatment, and manufacturing due to their ability to withstand high pressure and temperature conditions.
Q:What is the tensile strength of steel pipes?
The tensile strength of steel pipes can vary depending on the grade and type of steel used. However, on average, steel pipes typically have a tensile strength ranging from 300 to 700 megapascals (MPa).
Q:How are steel pipes used in the construction of irrigation systems?
Steel pipes are commonly used in the construction of irrigation systems due to their strength and durability. These pipes are used to transport water from a water source, such as a well or reservoir, to the desired areas for irrigation. They are often used in underground or above-ground applications, providing a reliable and efficient means of delivering water to crops or plants. Steel pipes are resistant to corrosion and can withstand high pressure, making them ideal for irrigation systems that require long-term functionality.
Q:Are steel pipes suitable for underground industrial waste disposal?
Yes, steel pipes are generally suitable for underground industrial waste disposal. Steel pipes are durable, resistant to corrosion, and can withstand high pressure, making them a reliable choice for transporting and disposing of industrial waste underground. Additionally, steel pipes have a long lifespan and can be easily maintained, reducing the risk of leaks or contamination.

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