SA387 GR.12 CL1 Alloy Pressure Vessel Steel Plate

As a critical material for high-temperature and high-pressure equipment, SA387 GR.12 CL1 alloy pressure vessel steel plate complies with ASTM A387/A387M and ASME SA387 standards, making it a preferred choice in petrochemical, power generation, and chemical industries.

GNEE Steel, as a professional manufacturer with 17+ years of experience, supplies high-quality SA387 GR.12 CL1 plates that balance mechanical performance, corrosion resistance, and weldability-ideal for your pressure vessel fabrication needs.

SA387 GR.12 CL1 stands out in pressure vessel applications due to its unique performance advantages, tailored for harsh working conditions:

Excellent High-Temperature Resistance: Withstands continuous service at up to 550°C, maintaining stable mechanical properties without deformation. Its Cr-Mo alloy system enhances creep resistance, critical for long-term operation of boilers and heat exchangers 

Superior Corrosion Resistance: The optimized Cr content forms a dense oxide film, resisting sulfide and oxidation corrosion-ideal for sour service in oil and gas fields

Outstanding Weldability: Normalized heat treatment improves ductility, allowing easy welding without excessive preheating. It meets ASME SA20/A20M standards for welding procedures, reducing fabrication costs

Wide Size Range: GNEE supplies plates from 6mm to 100mm in thickness, 4600mm max width, and 12000mm max length. Custom sizes are available to fit your specific equipment design.

SA387 GR.12 CL1 is widely used in key equipment requiring high reliability, thanks to its balanced performance.

Common applications include:

• Petrochemical Industry: Reactors, hydrotreaters, and storage tanks for sulfur-containing media

• Power Generation: Boilers, steam generators, and heat exchangers in coal-fired and gas-fired power plants.

• Chemical Industry: Pressure vessels for organic synthesis and high-temperature processing.

• Other Fields: Industrial boilers and welded pressure vessels complying with ASME Section VIII standards.

Choosing GNEE Steel as your SA387 GR.12 CL1 supplier means you get more than just high-quality steel plates. We provide comprehensive support to ensure smooth procurement:

Strict Quality Control: Each batch undergoes UT/RT flaw detection, chemical composition analysis, and mechanical property testing. Mill test reports (MTR) per EN 10204 3.1/3.2 are provided 

Global Certification: Fully compliant with ASTM, ASME, and ISO 9001 standards. CE marking is available for EU market access.

Efficient Logistics: Fast delivery via major ports (Shanghai, Tianjin) with flexible packaging (standard export seaworthy packaging or custom requirements).

Technical Support: Our team of metallurgists offers free consultation on material selection, welding procedures, and heat treatment.

Whether you need standard or custom-sized SA387 GR.12 CL1 alloy pressure vessel steel plates, GNEE Steel provides competitive prices and reliable delivery. Contact our sales team now with your specifications (thickness, width, length, quantity) to get a free quote within 24 hours. We also offer sample testing to ensure the material meets your requirements.

Request A Quote

Email: alloy@gneesteelgroup.com

Tel: +86-15824687445

GNEE Steel-Your Trusted Partner for High-Quality Pressure Vessel Steel!

What is SA 387 GR 12 equivalent material?

SA 387 GR.12 Equivalent Grades :

What is the difference between SA 387 Grade 11 CL 1 and Class 2?

The difference between SA 387 Grade 11 Class 1 and Class 2 Plate lies in their mechanical properties. However, they both have the same chemical composition. The tensile strength and yield strength of class 2 material is higher than that of class 1, whereas the elongation for class 1 is higher compared to class 2.

What material is SA387 11 cl2?

chrome-moly alloy

11 CL. 2 Plate is a pressure vessel grade steel plate that is used in high-temperature applications. It is made of a chrome-moly alloy that contains molybdenum and chromium.

GNEE Steel also supplies a variety of boilers and pressure vessel steel plates, such as A204 Grade B,A515 Grade 70,A537 Class 1,SA387 Grade 11 Class 1,P265GH,S537 Class 2,P355Q,P275N,P355N,P690Q,Q345R, etc. If you want to know more about other types of steel plates, you can call the consultation hotline at +8615824687445 or send an email to alloy@gneesteelgroup.com. You are welcome to consult us, and we are very willing to answer your questions.