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Help Center321 Stainless Steel Clad Composite Plate | 12+5mm Thickness Range | Flat Surface | Hot Rolled Bonded Steel Plate
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12+5mm 321 Stainless Steel Clad Plate Hot Rolled Bonded Flat Surface Composite Plate
Product Description
321 stainless steel clad composite plate is a high-temperature resistant clad material, adopting 12mm thick carbon steel base layer and 5mm 321 titanium stabilized stainless steel cladding layer, produced by hot rolling bonding process. 321 stainless steel adds titanium element to stabilize internal metal structure, effectively preventing intergranular corrosion caused by high-temperature heating and welding. The thickened 12+5mm specification improves overall structural rigidity, and hot rolling process ensures uniform plate thickness and high surface flatness, with no bending or deformation after long-term high-temperature service.
This product has four core performance advantages with accurate data support. Firstly, excellent high-temperature stability, continuous working temperature up to 550℃, no structural softening or performance attenuation, suitable for long-term high-temperature industrial equipment. Secondly, anti-intergranular corrosion performance, titanium stabilization process avoids grain boundary precipitation corrosion, solving the corrosion problem of ordinary stainless steel plates after welding. Thirdly, high structural rigidity, thickened composite structure with overall bending resistance improved by 50% compared with ordinary thin composite plates, not easy to deform under static pressure. Fourthly, good welding adaptability, no cracking or delamination at the welding joint, supporting conventional arc welding and laser welding processing.
With outstanding high-temperature resistance and anti-corrosion performance, 321 hot-rolled composite plates are mainly used in high-temperature industrial working conditions. The core application scenarios include high-temperature boiler lining, industrial furnace equipment shell, high-temperature flue pipeline, heat exchanger structural parts, thermal power plant auxiliary equipment and high-temperature chemical reaction devices. It solves the failure problems of ordinary composite plates in high-temperature and welding working conditions, and provides long-term stable material guarantee for high-temperature industrial equipment.
Item |
Parameter |
Remark |
|---|---|---|
Clad Material |
321 Titanium Stabilized Stainless Steel |
Anti-intergranular corrosion |
Base Material |
Q355 Carbon Steel |
High rigidity base layer |
Composite Thickness |
12+5mm |
Thickened specification |
Max Continuous Working Temp |
550℃ |
High temperature resistance |
Surface Flatness |
≤1.2mm/m |
Hot rolled flat surface |
Bonding Process |
Hot Rolling Bonding |
Integrated forming |
Welding Performance |
Excellent, no delamination after welding |
Suitable for welding processing |
Our factory implements strict high-standard quality control system. Raw materials are strictly screened for titanium element content and mechanical properties to ensure compliance with 321 stainless steel standards. Hot rolling temperature and pressure are precisely controlled by numerical control system to ensure uniform bonding. Finished products undergo high-temperature performance test, ultrasonic flaw detection, welding performance test and dimensional inspection. All products meet GB/T 8165 and ASTM A240 standards, with complete test reports.
For packaging and delivery, thick composite plates are polished and derusted, wrapped with high-temperature anti-rust materials, and fixed with heavy-duty iron frames to prevent deformation. Standard 12+5mm specifications are in stock with 5-8 days delivery. Customized thickness and size products take 10-15 working days. We support various international trade delivery methods to meet global customer's bulk procurement and customized order demands.
Q1：Do you offer sample orders？
A：Yes, samples are available for quality evaluation. Sample cost is charged but refundable upon bulk order.
Q2：What is your MOQ？
A：Our standard MOQ is 100 kg per specification. For common grades and standard sizes, we accept small batch orders. Mixed orders for different products are also welcome.
Q3：Can you provide custom sizes？
A：Yes, we can produce any length, width, thickness, or diameter based on your drawings. Cutting, slitting, and other processing services are available with tolerance as required.
Q4：What certifications do you provide？
A：Each shipment comes with EN 10204 3.1 mill test certificate (MTC). Third-party inspection reports (SGS/BV/TÜV) can be arranged upon request.
Q5：What is your lead time？
A：7–15 working days for stock items. 20–30 days for custom orders, depending on quantity and specification.
Q6：What surface treatments are available？
A：Various surface treatments are available upon request, including pickled, polished, coated, oiled, or as required.
Q7：What payment terms do you accept？
A：T/T (30% deposit + 70% against BL copy), L/C at sight, Western Union, etc.
Q8：What about packaging for export？
A：Standard seaworthy packaging with waterproof protection, steel straps, corner protectors, and ISPM 15 fumigation certification. Custom packaging is available as required.
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