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20# Steel Carbon Seamless Steel Pipe For Structural ASTM / DIN / GB / EN / JIS Standards

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20# Steel Carbon Seamless Steel Pipe For Structural ASTM / DIN / GB / EN / JIS Standards

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Brand Name : BaoYang

Model Number : ASTM/DIN/GB/EN/JIS

Certification : CE & ISO

Place of Origin : cangzhou

MOQ : 1

Price : Negotiable

Payment Terms : L/C, D/A, D/P, T/T, Western Union

Delivery Time : 7~30 working days

Packaging Details : Standard Export Packing

Name : Seamless Carbon Steel Pipes

Process : Hot Rolled Cold Rolled Cold Drawn

Standards : ASTM/DIN/GB/EN/JIS

Material : Carbon Steel

Wall Thickness : 1-20mm (0.04 Inch - 0.78 Inch)

Outer Diameter : 6-2500mm

Processing Service : Bending, Punching, Cutting

Usage : Pipeline Transport, Oil/Gas Drilling, Machinery Industry

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20# Steel Carbon Seamless Steel Pipe For Structural

Product Description: 20# Steel Carbon Seamless Steel Pipes are a type of carbon steel tubing known for their structural integrity and strength. These pipes are manufactured using a seamless process, which involves the creation of a continuous hollow tube from a solid billet of steel. The seamless design ensures a uniform material structure, providing superior performance and reliability compared to welded pipes. The '20#' designation refers to a carbon steel with a moderate carbon content, typically around 0.20%, which contributes to the pipe's tensile strength and ductility.

Key Features:

  • Seamless Construction: The seamless structure eliminates the potential for weak points associated with welded seams, making these pipes ideal for applications where structural reliability is critical.
  • Carbon Steel Material: Made from carbon steel with a 0.20% carbon content, these pipes offer a balance of strength and weldability.
  • Structural Applications: Suited for structural use in construction, bridge building, and other heavy-duty applications where high loads are present.
  • Mechanical Properties: Exhibits good tensile and yield strength, as well as sufficient ductility to allow for some degree of deformation without failure.

Product Applications:

  1. Construction Industry: Utilized as structural support columns, beams, and other load-bearing elements in building construction.
  2. Infrastructure Development: Employed in the creation of bridges, highways, and other large-scale infrastructure projects.
  3. Mechanical Equipment: Used in the fabrication of heavy machinery and equipment that requires strong and durable components.
  4. Pressure Vessels: Suitable for the construction of pressure vessels and boilers due to their ability to withstand high pressures.
  5. Piping Systems: Ideal for use in piping systems that require high-strength tubes, such as those used in oil and gas transportation or water supply systems.
  6. Reinforcement: Used for reinforcing concrete structures to enhance their load-bearing capacity.

standards for 20 # seamless steel pipes


(1) GB / t8163-2008 seamless steel pipe for fluid transportation
(2) gb3087-2008 seamless steel tubes for low and medium pressure boilers
(3) seamless steel tubes for petroleum cracking (GB / T 9948-2013)
(4) seamless pipe for high pressure fertilizer equipment (GB / T 6479-2013)
(5) GB / T 5310-2017 seamless steel tubes for high pressure boilers (in the standard, the steel number is 20g; G refers to boiler steel tubes)

20 # chemical composition

Standard Chemical composition
C Si Mn Cr Mo Ni Cu V P S
GB/T8163 0.17-0.23 0.17-0.37 0.35-0.65 0.25 -- 0.30 0.25 -- 0.035 0.035
GB/T 9948 0.15 0.25 0.20 0.08 0.025 0.015
GB/T 6479


It can be seen from table 1 that the content of main elements (such as C, Si, Mn) in the chemical composition of 20 × seamless steel pipe in each material standard is the same. The content of residual elements (such as Ni, CI, Cu, Mo, V) in steel in gb9948-2013 and GB 6479-2013 are the same, but there are slight differences between GB / T 8163-2008 and the above two standards. The main difference of chemical composition lies in the content of P and s.

Mechanical Properties of 20 # Seamless Steel Pipe

Standard Mechanical Properties
Tensile strength/MPa Yield strength/MPa Elongation KV2/J
S≤16mm 16-30mm >30mm Portrait Transverse Portrait Transverse
Test temperature/℃ 0℃
GB/T8163 410-530 245 235 225 20 ---
GB/T 9948 410-550 245 24 22 ≥40 ≥27
GB/T 6479 410-550 245 16-40mm >40mm 24 22 ≥40 ≥27

20# Steel Carbon Seamless Steel Pipe For Structural ASTM / DIN / GB / EN / JIS Standards20# Steel Carbon Seamless Steel Pipe For Structural ASTM / DIN / GB / EN / JIS Standards

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20# Steel Carbon Seamless Steel Pipe For Structural ASTM / DIN / GB / EN / JIS Standards

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