API 5L Grade B seamless steel pipe is a kind of seamless steel pipe widely used in the oil and gas industry. API 5L is a standard developed by the American Petroleum Institute (API) to regulate pipeline steel pipes. The "L" in "5L" stands for pipeline (Line). The standard covers seamless and welded steel pipes, with Grade B being one specific grade of steel. API 5L standards are regularly updated to keep pace with industry developments and technological advances, ensuring the quality and performance of steel pipes in harsh environments such as oil and gas transportation.
API 5L Grade B Seamless Steel Pipe Specifications
|
Processing Method |
Seamless and Welded
|
|
Size Range |
1/8"- 48" / DN6 - 1200
|
|
Thickness Schedule |
SCH 10, SCH 20, SCH 40, STD, XS, SCH 100, SCH 120, SCH 160, XXS
|
|
Length |
6m or 12 m or Random
|
|
Standard |
ASME B36.10M
|
|
Surface Treatment |
Blasting and Painting , Epoxy Powder FBE, 2PE, 3PE Coating
|
|
Material Grade |
ASTM A106B / A53, API 5L B / X42 / 46 / 52 / 56 / 60 / 65 / 70, A333 GR 6
|
Chemical composition of API 5L Grade B seamless steel pipe
|
CHEMICAL |
LIMITS |
C |
Mn |
P |
S |
Cu |
Ni |
Cr |
Mo |
|
API 5L Gr.B |
MIN |
|
|
|
|
|
|
|
|
|
MAX |
0.28 |
1.20 |
0.03 |
0.03 |
0.5 |
0.5 |
0.5 |
0.15 |
Carbon (C): The content is usually controlled within a certain range, generally not exceeding 0.28%. An appropriate amount of carbon helps to ensure the strength of the steel.
Manganese (Mn): The content does not exceed 1.20%. Manganese can improve the strength and toughness of steel and eliminate the harmful effects of sulfur to a certain extent.
Sulfur (S) and phosphorus (P): They are harmful elements and their content is strictly limited. Usually, the sulfur content does not exceed 0.03% and the phosphorus content does not exceed 0.03% to ensure the quality and performance of steel.
Mechanical properties of API 5L Grade B seamless steel pipe
|
MATERIAL |
T.S (MPA) |
Y.S (MPA) |
EL % |
|
ASTM API 5LB |
415 min |
240 min |
23min |
Yield strength: The yield strength is 240MPa, which means that when subjected to pressure, the steel pipe will maintain elastic deformation before reaching this stress value, and begin to produce plastic deformation after exceeding this value.
Tensile strength: The tensile strength is 415MPa, which indicates the stress that the material can withstand during the stretching process and reflects the ability of the steel pipe to resist tensile damage.
Application areas: Stable performance in multiple scenarios
1. This steel pipe plays a key role in many fields. In the field of oil and gas transportation, it is often used to lay long-distance pipelines across land. With its high strength and pressure resistance, it ensures the safe and efficient transportation of oil and gas.
2. In the water transportation system, whether it is the urban water supply pipeline or the agricultural irrigation pipeline network, it can transport water stably.
3. In addition, its reliable performance also provides strong support for the stability of the structure in general structural uses such as industrial plant construction and bridge construction. However, due to its relatively limited corrosion resistance, it is usually necessary to use anti-corrosion coatings or cathodic protection measures when used in highly corrosive environments.
Read more: APl 5L Line Pipe-PermanentSteel.com
