EN10028-6 P355Q for oil and gas tank

EN10028-6 P355Q is a European standard pressure vessel plate, a professional alloy steel mainly used for manufacturing pressure-bearing equipment.

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Product Description

EN10028-6 P355Q for oil and gas tank

EN10028-6 P355Q is a European standard pressure vessel plate, a professional alloy steel mainly used for manufacturing pressure-bearing equipment. It has good plasticity, toughness, cold bending performance and welding performance.

Execution Standard: The execution standard for P355Q steel plate is EN10028-6, a standard formulated by the European Standardization Organization for steel plates used in pressure vessels.

Grade Designation:

“P” indicates that this is a steel plate for pressure vessels.
“355” means the minimum yield strength of the material is 355 MPa.
“Q” represents the delivery condition as quenched and tempered.

Dimension Specifications: Specific dimensions can be customized according to customer requirements, including thickness, width and length.

1. What are the chemical composition and mechanical properties of EN10028-6 P355Q for oil and gas tanks?

P355Q Chemical Composition

Grade	The Element Max(%)
	C	Si	Mn	P	S	N	B
P355Q	0.16	0.4	1.5	0.025	0.015	0.015	0.005
	Mo	Cu	Nb	Ni	Ti	V	Zr
P355Q	0.25	0.3	0.05	0.5	0.03	0.06

P355Q Mechanical Property

Grade	Thickness（mm）	Yield（Min Mpa）	Tensile（Mpa）	Elongation（Min %）
P355Q	6 – 50	355	490 – 630	22%
P355Q	50 – 100	335	490 – 630	22%
P355Q	100 – 150	315	450 – 590	22%

2.What are the performance advantages of EN10028-6 P355Q?

Mechanical Properties:Delivered in quenched and tempered conditions to ensure the steel plate has excellent mechanical properties.
Welding Performance:Has good weldability, facilitating processing and manufacturing.
Other Properties:Also exhibits good plasticity, toughness and cold bending performance.

3.What are the typical applications of EN10028-6 P355Q for oil and gas tanks?

P355Q steel plates are used to manufacture reactors, heat exchangers, separators, spherical tanks, oil-gas tanks, liquefied gas tanks, nuclear reactor pressure vessels, turbine scroll cases, etc.

They are widely used and highly praised in enterprises and manufacturing industries such as petrochemical equipment manufacturing, petroleum machinery equipment manufacturing, boiler equipment manufacturing, pressure vessel equipment manufacturing, head manufacturing, import-export equipment manufacturing, nitrogen tank manufacturing, and liquefied gas tank manufacturing.

4.What are the manufacturing process steps for EN10028-6 P355Q for oil and gas tanks?

Steelmaking: Initial smelting is carried out using a converter or electric furnace, followed by refining in an LF furnace, and vacuum degassing treatment in a VD furnace.
Continuous Casting/Die Casting: The refined molten steel is poured into a continuous casting machine or die casting mold for forming.
Cleaning and Heating: Symmetric steel plates undergo surface cleaning and heating treatment to eliminate stress and improve rolling performance.
Rolling: The heated steel plate is rolled to obtain the required thickness and dimensions.
Flaw Detection: Nondestructive flaw detection is performed on the rolled steel plate to ensure its internal quality.
Heat Treatment: The steel plate is heat-treated as needed to improve its mechanical properties and corrosion resistance.
Surface Inspection: The heat-treated steel plate is inspected for surface quality.
Batch Division: The steel plates are divided into different batches according to quality requirements and uses.
Cutting and Sampling: The steel plate is cut and sampled for inspection according to drawing requirements.
Performance Testing: Performance testing is conducted on the cut samples, including mechanical properties, chemical composition and metallographic structure.
Steel Plate Finishing: Qualified steel plates undergo surface finishing and coating treatment to meet customer requirements.