ASTM A36 Tank Plates Bottom Plates Annual Plates

Product Item: Tank Plates, Bottom Plates, Annual Plates
Materials: ASTM A36, Mild Steel, Carbon Steel
Thickness: 8mm
Width: 2000mm
Length: 8000mm
Plate Surface: Anti-rust painting to protect during transportation

Supply Scope of Plates process: Cutting, Beveling, Rolling, Sand Blasting, Painting, Export Steel Packing for the Rolled Plates as per Project drawings

High-quality Tank Plates, Bottom Plates, and Annual Plates available from our provider, featuring ASTM A36 Mild Steel and Carbon Steel with an 8mm thickness, 2000mm width, and 8000mm length.

Each plate is treated with anti-rust painting to ensure durability and longevity.

Plate Materials and Specifications

API 650 groups plate steels by allowable stress and application. Commonly specified materials for tank plates include:

ASTM Standards

ASTM A36 (26 ksi yield, ~250 MPa) – Widely used for shell and bottom in moderate conditions. It is inexpensive and widely available, though unsuitable for cold environments unless impact tested.
ASTM A283 Gr. C (also ~205–290 MPa) – A general structural steel sometimes used for low-height tanks.
ASTM A285 Gr. C (Plate for Pressure Vessels, 195–260 MPa) – Approved by API 650 but limited to thinner sections. More ductile, often a lower-cost alternative.
ASTM A516 Gr. 70 (Plate for Moderate-/Lower-Temp Vessels, 485 MPa tensile) – Common for higher-strength shells/bottoms. Has better toughness than A36.
ASTM A537 CL.2 (pressure vessel plate, ~450 MPa yield) – Higher strength and toughness for large tanks.
ASTM A553 (Type 1 & 2) – Low-temperature carbon-manganese plate (nickel-alloyed) for cryogenic service. A553 Type 1 (≈9% Ni) is specified in API 620 Appendix Q for LNG tanks.

EN Standard

EN 10025 S235JR / S355JR – European structural steels roughly equivalent to A36 (S235JR) and higher-strength A572/A656 (S355JR). Note that API 650 requires J0 or J2 impact-tested grades (tested at 0 °C or -20 °C) for S275/S355; ordinary "JR" grade (tested only at 20 °C) is not allowed for thicker plates.

JIS Standard

JIS G3101 SS400 / SS490 – Japanese equivalent structural steels (Y.S. 205–245 MPa and 245–295 MPa). SS400 is weaker than A36, so some designers avoid direct substitution unless the thickness is increased.

Steel Plate Welding Service for Large Storage Tanks

Product Description

We provide a comprehensive range of custom cost effective metalworking services to customers around the globe. We not only work with all the typical metals, such as carbon steel, stainless steel, aluminum and copper alloys, but also rare metals like nickel and titanium alloys. We regularly carry out work for the following industries, as well as others. Machinery, Aerospace, Automotive, Metallurgy, Rail Transportation, New Energy, Shipbuilding, Petrochemical, Construction.


Our cost effective metal fabrication services include cutting, press braking, plate rolling, hydraulic pressing, section bending, welding, and so on.

Our factory equipped with all series of world-class CNC machine tools like: Germany Schiess Double-gantry boring and milling machine, Italy PAMA large boring mill, Japan Mitsubishi horizontal boring and milling machine, China WZ large vertical turning center etc. Our advanced machine tool fleet allows us to complete even the largest machining projects ever known on earth.


Whatever your metalwork requirements, no task is too large, small, simple or complex for GNEE STEEL. We pride ourselves on being one of the most professional and reliable suppliers, not just through price, but also creative capability to meet customer's increasing diversified and specified demands in metalworking.


Being as a quality-oriented metal fabricator, we have equipped our factory with the best inspection tools. For example, our Leica AT901-LR laser tracker helps us to make sure the machine tools working in good order all the time that it can measure any large object within a sphere area of 80m in semi-diameter, the measurement accuracy is up to a micron. What's more? We also have different types of CMM test machine, our biggest Zeiss measuring machines can work on component up to 7000x4000x3000mm with an accuracy of up to 0.43um. Being as one-station-shop company, we can handle all the other related process like: heat treatment, sand blasting, painting, x-ray testing, etc.

Processable Grades

Carbon Steel Plate Grade

Pressure vessel plate Grade