ASTM A387 Steel Plate Supplier | SA387 Gr11, Gr22, Gr91

ASTM A387 Steel Plate Supplier with Stock and Fast Delivery

CJM Steel is a professional ASTM A387 steel plate supplier providing SA387 Gr11, Gr22, and Gr91 alloy steel plates for pressure vessels, boilers, heat exchangers, and high-temperature industrial applications.

We supply ASTM A387 Cr-Mo steel plates according to ASTM and ASME standards, with stable mill sources, flexible MOQ, customized processing, and export experience for global distributors, EPC contractors, and fabrication companies.

Our ASTM A387 steel plates are available in various grades, thicknesses, and dimensions, with support for cutting, machining, inspection, and complete mill documentation.

ASTM A387 Steel Plate Supply Range and Stock Availability

CJM supplies ASTM A387 alloy steel plates for demanding pressure vessel and high-temperature applications. Common grades including SA387 Grade 11, Grade 22, and Grade 91 are available for project requirements.

• Available Grades: SA387 Gr11, Gr22, Gr91
• Thickness Range: 6 mm – 150 mm
• Width: Up to 3500 mm
• Length: Up to 12000 mm
• Heat Treatment: Normalized / Quenched & Tempered
• MOQ: Flexible for trial and bulk orders
• Stock: Ready stock available for common sizes
• Delivery Time: 7–15 days depending on specification
• Processing Services: Cutting, beveling, drilling

For ASTM A387 steel plate prices, stock availability, and technical specifications, contact CJM Steel with your required grade, size, quantity, and destination.

Available ASTM A387 Steel Plate Grades – Gr11, Gr22, Gr91

SA387 Grade 11 Steel Plate Supplier

SA387 Gr11 steel plate is a Cr-Mo alloy steel with good heat resistance and moderate strength, suitable for medium temperature pressure vessel applications. As a reliable SA387 Grade 11 steel plate supplier, CJM provides Grade 11 plates for medium-temperature pressure vessel applications, including boilers, refinery equipment, and heat exchangers.

Typical uses:

• Boilers
• Refinery equipment
• Heat exchangers

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SA387 Grade 22 Steel Plate Supplier

SA387 Gr22 steel plate offers higher chromium and molybdenum content, providing improved strength and oxidation resistance at elevated temperatures. CJM supplies SA387 Grade 22 steel plates for demanding applications in petrochemical plants, power generation systems, and high-pressure equipment.

Typical uses:

• High-pressure vessels
• Petrochemical plants
• Thermal power systems

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SA387 Grade 91 Steel Plate Supplier

SA387 Gr91 steel plate is a high-performance alloy steel with excellent creep resistance and high-temperature strength. With excellent creep resistance and superior elevated temperature strength, SA387 Grade 91 is widely used in modern power generation and supercritical boiler systems.

Typical uses:

• Supercritical boilers
• Power generation systems
• Advanced pressure vessels

Chemical Composition

Element	Grade 11 (%)	Grade 12 (%)	Grade 22 (%)	Grade 91 (%)
Carbon (C)	0.05-0.15	0.05-0.15	0.07-0.15	0.08-0.12
Chromium (Cr)	0.90-1.20	0.90-1.20	1.90-2.60	8.00-9.50
Molybdenum (Mo)	0.44-0.65	0.44-0.65	0.87-1.10	0.85-1.05

Detailed composition analysis can be provided upon request or technical consultation.

Mechanical Properties

Grade	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)
Grade 11	≥275	415-565	≥22
Grade 12	≥275	415-565	≥22
Grade 22	≥275	415-565	≥22
Grade 91	≥415	585-735	≥20

Why Choose Us as Your ASTM A387 Steel Plate Supplier

Choosing the right ASTM A387 steel plate supplier is important for pressure vessel and high-temperature equipment projects.

• Stable supply of ASTM A387 Gr11 and Gr22 plates with reliable mill sources
• Fast delivery from available stock for urgent project requirements
• Flexible processing services including cutting, beveling, and custom sizes
• Full documentation support including Mill Test Certificate (EN 10204 3.1 / 3.2)
• Third-party inspection available upon request
• Export experience in pressure vessel steel plates for global markets

We focus on long-term cooperation with global buyers including stockholders, distributors, and project contractors.

ASTM A387 Steel Plate Packaging and Shipping

• Bundled with steel strips
• Waterproof wrapping & edge protection
• Wooden pallets or as per buyer request
• Shipping by container or bulk vessel

ASTM A387 vs ASTM A516 Steel Plate Comparison

Item	ASTM A516	ASTM A387
Type	Carbon steel	Alloy steel (Cr-Mo)
Temperature Resistance	Medium	High
Corrosion Resistance	Standard	Enhanced
Cost	Lower	Higher
Typical Use	Storage tanks	Refinery & high-temp vessels

Selection Suggestion:

• Choose A516 for standard pressure vessel applications with cost sensitivity
• Choose A387 plate when high temperature, hydrogen service, or corrosion resistance is required

Not sure the difference between A387 and A516 ? See our detailed selection guidance.

Request a Quote for ASTM A387 Steel Plate

Contact CJM for pricing, stock availability, and technical support.
Send your inquiry with grade (Gr11 / Gr22 / Gr91), size, quantity, and destination to receive a detailed quotation.

FAQ – ASTM A387 Steel Plate Supplier

Q1. What is ASTM A387 steel plate used for?

ASTM A387 steel plate is mainly used for pressure vessels, boilers, and high-temperature equipment in industries such as oil & gas, petrochemical, and power generation.

Q2. What grades of ASTM A387 steel plate do you supply?

We supply common ASTM A387 grades including SA387 Grade 11, Grade 22, and Grade 91. Different grades are selected according to temperature requirements, pressure conditions, and application environments.

Q3. Do you have ASTM A387 steel plate in stock?

Yes, we keep ready stock for standard sizes of Gr11 and Gr22. Gr91 is available upon request.

Q4. Can you provide cutting and processing services?

Yes, we offer cutting, beveling, drilling, and other processing services based on project requirements.

Q5. How can I get an ASTM A387 steel plate quotation?

You can send us your required grade, thickness, size, and quantity. We will provide price and delivery details within 24 hours.

Q: What is your company’s main products/services?

A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.

Q: Can I go to your factory for a visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What are your terms of payment?

A: 30% T/T deposite and 70% balance before shipment.

Q: What is your delivery time?

A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.

Q: Do you provide samples? Are they free or paid?

A: Samples are available for free,but the courier freight will be covered by customer account.

Q: Do you accept the third party inspection?

A:Yes, we fully accept ‌third-party inspections.

Q: Why should I buy from you not from other suppliers?

A: Integrating the superior resources of China’s steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.

Q:How can you guarantee quality?

A: Always a pre-production sample before mass production;Always 100% inspected before shipment