Composite Steel Plate is a high-performance steel product composed of two or more dissimilar metals metallurgically bonded together. Typically, it features a low-cost, high-strength base layer (e.g., carbon or low-alloy steel) and a corrosion-resistant, wear-resistant, or functionally specialized cladding layer (e.g., stainless steel, nickel alloys, titanium, copper, zirconium). This combination delivers both structural strength and superior surface performance, making it ideal for chemical processing, oil & gas, power generation, offshore, pharmaceutical, environmental, and nuclear applications. We offer hot-rolled, explosion-bonded, and weld-overlay clad plates, ensuring high interfacial bond strength, stable performance, and extended service life.
Key Features
Standards:
Chinese Standards:
GB/T 8165-2020 (Stainless Steel Clad Plates)
NB/T 47002.1-2019 (Explosion-Welded Clad Plates for Pressure Vessels)
JB/T 4733-1996 (Explosion-Welded Stainless Steel Clad Plates)
International Standards:
ASTM A263/A263M, A264/A264M (Stainless Steel Clad Plates)
ASTM B265 (Titanium-Steel Clad Plates)
JIS G 3601 (Japanese Clad Plates)
EN 13601 (European Standard for Clad Plates in Pressure Equipment)
ISO 15510 (Stainless Steel Classification)
Material Combinations:
Common Cladding/Base Pairs:
SS/C steel: 304+Q235B, 316L+Q355B,316L+S355
Duplex/C steel: 2205+Q355B, 2507+Q370R
Ni-alloy/C steel: Inconel 625+Q355B, Hastelloy C-276+16MnR
Ti/C steel: TA2+Q345R (seawater coolers, desulfurization towers)
Cu/C steel: T2+Q235B (conductive parts)
Zr/C steel: Zr702+Q345R (nuclear, strong acid environments)
Cladding Thickness: 1.5–10mm (5–20% of total thickness)
Base Thickness: 6–100mm
Total Thickness: 8–120mm
Dimensions:
Width: 1,500–3,500mm
Length: 3,000–12,000mm (custom lengths available)
Tolerances:
Flatness: ≤8mm/m
Thickness: Base ±0.5mm, Cladding +0.2/-0.1mm
Condition:
Hot-rolled: Normalized or quenched & tempered
Explosion-bonded: Post-weld heat treatment (PWHT) available
Weld-overlay: Multi-pass, smooth surface
Applications:
Oil & Gas: Reactors, heat exchangers, desulfurization towers
Power: FGD absorbers, wet scrubbers
Offshore: Seawater desalination units, platform structures
Pharma/Food: Sanitary vessels, reactor linings
Nuclear: Spent fuel casks, nuclear piping
Environmental: Incinerator liners, wastewater tanks
Marine: Submarine hulls, seawater systems
Certifications & Approvals:
Classification Society Certifications:
CCS, ABS, DNV, LR, BV, NK
Provide: Type Approval, MTC 3.1/3.2, Shear Strength Test, UT Report, CoC
Owner & Engineering Company Approvals:
ISO 9001, ISO 14001, ISO 45001
PED 2014/68/EU, AD 2000-Merkblatt W0
ASME BPVC Sec. II, NORSOK M-650
Approved by Sinopec, CNOOC, Shell, ExxonMobil, Total, BASF, DuPont, Siemens, GE, Honeywell
Common Customer Questions (Q&A Format)
Q: What is clad plate? How is it different from solid stainless steel?
A: Clad plate has a carbon steel base + stainless cladding, offering strength and corrosion resistance at lower cost than solid stainless.
Q: Hot-rolled vs. explosion-bonded-what's the difference?
A: Hot-rolled: high efficiency, good flatness; Explosion-bonded: higher bond strength (>210MPa), ideal for critical applications.
Q: How is minimum cladding thickness ensured?
A: We control tolerance (e.g., +0.2/-0.1mm) and provide thickness reports and 100% UT to guarantee minimum cladding.
Q: Can clad plates be welded?
A: Yes. Use matching filler (e.g., E309L), weld base first, then cladding, with transition layer to prevent dilution.
Q: Do you provide NDT reports?
A: Yes, 100% ultrasonic testing (UT) for delamination and bond quality, with full UT reports and scan images.
Q: Suitable for pressure vessels?
A: Yes, compliant with NB/T 47002, ASTM A263, PED, widely used in ASME, GB, EN pressure equipment.
Q: How to protect cladding during fabrication?
A: Use stainless-dedicated tools; avoid carbon steel contamination; use plasma/laser cutting instead of flame.
Q: Can you customize material combinations?
A: Yes, we can tailor cladding (e.g., 904L, Alloy 825, Ti Gr2) and base (e.g., 15CrMoR, P355NL1) per application.
Q: What is the lead time?
A: Standard: 20–40 days; Custom: 40–70 days, depending on process and material availability.
Q: Suitable for low/high-temperature service?
A: Yes, we provide low-temp impact data (-40°C) or high-temp strength data (e.g., 350°C creep strength).
Q: What is the bond strength? How is it tested?
A: Hot-rolled ≥200MPa, explosion-bonded ≥210MPa. Tested via shear tensile test, with report per batch.
Q: Can it be used in food/pharma industries?
A: Yes, 316L-clad plates can be supplied with FDA/GMP-compliant surface finish and material traceability for sanitary vessels.
Hot Tags: composite steel plate, China composite steel plate manufacturers, suppliers, factory, Composite Steel Pipes, Composite Steel Plate, CRA Clad Steel Pipes, Bimetallic Composite Pipe, weld overlay clad plates, 316L clad steel plate
