GNEE is a professional supplier and manufacturer of ASTM A516 carbon steel plates designed for pressure vessel applications across the globe. We supply all grades including Grade 55, 60, 65, and 70, with stable performance, consistent quality, and full compliance with international standards. Our plates are widely used in the oil, gas, petrochemical, and energy industries, and perform reliably in sour service, wet H₂S environments, and other harsh working conditions where safety and durability are critical.
ASTM A516 is a widely recognized specification for carbon steel plates intended primarily for welded pressure vessels where improved notch toughness, structural integrity, and low-temperature performance are essential. With four different strength levels, it provides flexible material solutions for various design requirements, with minimum tensile strengths ranging from 55 ksi to 70 ksi. All grades offer excellent weldability, forming ability, and long-term service stability, making them highly suitable for moderate and lower-temperature applications.
The ASTM A516 Gr 55 steel plate chemical composition is optimized for weldability and performance in low-pressure environments.
|
Grade |
Thickness (mm) |
C (Max %) |
Si (Max %) |
Mn (Max %) |
P (Max %) |
S (Max %) |
|---|---|---|---|---|---|---|
|
A516 Gr 55 |
<12.5 |
0.18 |
0.13-0.45 |
0.55-0.98 |
0.035 |
0.035 |
|
A516 Gr 55 |
12.5-50 |
0.20 |
0.13-0.45 |
0.55-0.98 |
0.035 |
0.035 |
|
A516 Gr 55 |
50-100 |
0.22 |
0.13-0.45 |
0.55-0.98 |
0.035 |
0.035 |
|
A516 Gr 55 |
100-200 |
0.24 |
0.13-0.45 |
0.55-0.98 |
0.035 |
0.035 |
Carbon Equivalent (Ceq): Ceq = [C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15]%, ensuring A516 Gr 55 steel is weldable with minimal cracking risk.
|
Items |
Range |
Notes |
|---|---|---|
|
Thickness |
6 mm - 150 mm |
Available in increments for A516 Gr 55 applications, ideal for low-pressure vessels. Thicker plates up to 150 mm suit less demanding SA 516 Gr 55 projects. |
|
Width |
1500 mm - 4000 mm |
Standard widths from 1500 mm to 2500 mm, with custom widths up to 4000 mm for ASTM A516 Gr 55 steel fabrications. |
|
Length |
3000 mm - 18000 mm |
Common lengths up to 12000 mm, with extended lengths up to 18000 mm for specialized A516 Gr 55 material needs. |
In addition to its outstanding mechanical properties, ASTM A516 steel plate offers excellent formability and heat treatment stability, allowing for easy rolling, bending, and welding during fabrication. This makes it highly adaptable for complex pressure vessel structures, ensuring both construction efficiency and long-term operational safety.
At GNEE, we implement strict quality inspection throughout the production process, from raw material melting to final heat treatment and testing. Our ASTM A516 plates are fully compliant with international standards, supported by complete MTC, ultrasonic testing, and third-party inspection reports, providing reliable assurance for your most critical projects.
At GNEE, we implement strict quality control throughout the entire production chain, including raw material inspection, controlled rolling, heat treatment, ultrasonic testing, hardness testing, and final certification. Every plate is supplied with complete mill test certificates (MTC) and can support third-party inspections to meet the most stringent project requirements.
We continuously optimize production technology and supply chain efficiency to provide our global customers with stable delivery, competitive pricing, and professional technical support. Whether for standard projects or highly demanding special applications, GNEE ASTM A516 steel plates deliver the reliability, performance, and peace of mind that critical industrial operations demand.
With years of export experience and a complete quality system, GNEE has become a trusted partner for fabricators, engineering companies, and project contractors worldwide. We are committed to providing high-quality pressure vessel steel solutions that drive safety, efficiency, and success for every project.
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