Hot Rolled Steel Coil, Pressure Vessel Plate & Automotive Steel | Kailong
Created on 09.11
Hot Rolled Steel Coil, Pressure Vessel Plate & Automotive Steel | Kailong
Shanghai Kailong Industrial Co., Ltd. is a professional supplier of steel and aluminum products, serving automotive manufacturers, pressure vessel fabricators, construction contractors, appliance makers and industrial distributors in more than forty countries. Our core portfolio covers hot rolled steel coil, pressure vessel plate, automotive high-strength steel, stamping steel and pickled & oiled steel for automotive, alongside aluminum sheet, electro-galvanized steel, aluzinc coated steel sheet, hot-dip galvanized steel sheet and aluminum-silicon coated steel sheet. We work directly with domestic mills and operate our own slitting, cutting and coating coordination services, so customers receive material that is already sized, protected and ready for production. Our value proposition is simple: stable metallurgical quality, competitive factory-direct pricing, reliable lead times and genuine export experience. Every shipment is supported by mill test certificates, dimensional inspection records and clear documentation for customs and quality audits. Whether you need a trial container of coil or a multi-year supply program, Kailong is built to handle both.
1. Hot Rolled Steel Coil
Hot rolled steel coil is produced by rolling steel slabs at temperatures above the recrystallization point, typically over 1,000 °C, which allows the metal to deform easily before it is cooled under controlled conditions. Widely traded grades include Q195, Q235, Q345, SS400, A36, S235JR and S355JR, with carbon structural and low-alloy variants available on request. Kailong supplies thicknesses from 1.2 mm to 25 mm, widths from 600 mm to 2,000 mm and coil weights from 3 tons to 30 tons, and we can deliver cut-to-length sheet, slit strip and laser-ready blanks instead of full coils. Because the surface retains a light mill scale, hot rolled material is ideally suited to structural applications where strength and cost efficiency matter more than cosmetic appearance. Typical end uses include construction frames, machinery components, welded pipe, guardrails, ship structures, and the raw feedstock for pressure vessel plate. Kailong holds regular stock of mainstream specifications and can reserve tonnage for contract customers, which shortens lead times and protects project schedules. This is the backbone product of our catalogue and one of the most requested items on ourProducts page.
2. Pressure Vessel Plate
Pressure vessel plate is engineered for equipment that must contain gas or liquid under elevated pressure and temperature, so the steel must combine high strength with toughness and dependable weldability. We supply plate manufactured to ASTM A516, ASTM A537, ASME SA-516, EN 10028-2 (P265GH, P355GH) and GB 713 standards, with Charpy impact testing available for low-temperature service. The key mechanical requirements are a controlled carbon equivalent, fine grain structure, freedom from laminations and consistent through-thickness properties, all of which reduce the risk of brittle fracture in service. Applications include boiler shells, storage tanks, heat exchangers, reactor vessels, separators and pipeline components in the oil, gas, chemical and power industries. Kailong provides full mill test certificates, heat number traceability and third-party inspection reports so that fabricators can satisfy their own notified body or end-client requirements. Because pressure vessel projects run on strict schedules, we prioritise plate availability and keep dedicated stock for repeat customers.
3. Automotive High-Strength Steel
Automotive high-strength steel has become central to modern vehicle design because it allows engineers to reduce weight without sacrificing crash performance. Grades such as HSLA 340/440/550, dual-phase DP590 and DP780, and press-hardening capable boron steels deliver high yield strength with controlled elongation, enabling thinner gauges in safety-critical areas. Typical applications include chassis and suspension components, longitudinal beams, B-pillars, door intrusion bars, seat frames, structural cross members and electric vehicle battery enclosures. For EV platforms, high-strength steel offers a cost-effective alternative or complement to aluminum in the body-in-white and underbody protection structures. Kailong supplies automotive high-strength coil and sheet with tightly controlled mechanical properties, consistent surface quality and documented chemical composition, which is essential for automated welding and forming lines. Our technical team can discuss formability, springback behaviour and weld parameters before you commit to a specification.
4. Stamping Steel
Stamping steel is specified for its formability, and the ability to deep draw or stretch a blank without cracking depends on chemistry, grain size, annealing practice and surface lubrication. Deep-drawing grades such as DC01, DC03, DC04, SPCC and SPCD offer progressively better elongation and r-values, allowing complex shapes to be produced at high stroke rates. Surface quality is graded from general purpose to exposed panel quality, and thickness tolerances are held tight because small gauge variations cause measurable variation in the finished part. Controlled surface roughness and consistent oil film are equally important, since they influence friction, die wear and the risk of galling during long production runs. Kailong works with stampers producing brackets, housings, brackets, motor laminations, appliance panels and structural reinforcements, and we can supply coil, slit strip or pre-blanked sheets. Material is optimised for high-volume press lines, so scrap rates and tool maintenance costs stay predictable.
5. Pickled & Oiled Steel for Automotive
Pickled & oiled steel for automotive starts as hot rolled coil that is passed through an acid pickling line to remove mill scale and surface oxides, then coated with a thin protective oil film. The result is a clean, bright, uniform surface that welds more reliably, paints better and forms with less risk of surface defects than plain hot rolled material. Oiling is not merely cosmetic: the film prevents flash rust during storage, transit and in-plant handling, which is especially important for parts exported by sea. Automotive applications include chassis brackets, suspension arms, seat structures, underbody components and structural stampings that will be welded or coated downstream. Kailong can adjust oil film weight to suit your process, from a light anti-rust film to a heavier drawing lubricant, and we can supply HRPO in coil, strip or cut sheet form. This product line gives stampers a cost-effective alternative to cold rolled sheet where surface requirements are moderate.
6. Aluminum Sheet
Aluminum sheet is roughly one-third the density of steel, making it a natural choice wherever weight reduction, corrosion resistance or thermal conductivity is the priority. Common alloys include 1050, 1060, 1100, 3003, 5052, 5754, 6061 and 8011, supplied in tempers such as O, H14, H24, H32 and T6 depending on the required balance of strength and formability. Kailong stocks thicknesses from 0.2 mm to 6 mm in coil and sheet form, with mill finish, stucco embossed, color coated and anodising-quality surfaces available. Applications span automotive panels and heat exchangers, signage and nameplates, roofing and cladding, truck bodies, marine fittings, food processing equipment and consumer goods. Aluminum resists atmospheric corrosion naturally because it forms a protective oxide layer, and that layer can be further enhanced by anodising or painting. We help buyers match alloy, temper and surface finish to the actual forming and service conditions rather than selling on price alone.
7. Electro-Galvanized Steel
Electro-galvanized steel is produced by passing cold rolled strip through an electrolytic zinc bath, where a precisely controlled current deposits a thin, uniform zinc coating on the surface. Coating weights typically range from 20 g/m² to 120 g/m² per side, and the process allows extremely tight control of thickness consistency and surface appearance. Because the coating is thin and smooth, the material offers excellent paintability, spot weldability and a superior finish compared with heavier hot-dip coatings. Applications include appliance housings, computer and electronics enclosures, automotive interior components, HVAC parts and furniture fittings. The trade-off is corrosion life: electro-galvanized sheet performs well indoors and in mildly corrosive environments, while heavier coatings are better for exterior exposure. Kailong supplies electro-galvanized coil and sheet in skin-passed and anti-fingerprint finishes, helping manufacturers maintain a clean, paint-ready surface.
8. Aluzinc Coated Steel Sheet
Aluzinc coated steel sheet carries a metallic coating composed of approximately 55% aluminum, 43.4% zinc and 1.6% silicon, often referred to as Al-Zn or GL material. This alloy combination delivers roughly two to six times the corrosion resistance of a conventional galvanized coating of similar weight, largely because the aluminum-rich layer forms a stable protective barrier. Aluzinc also reflects heat and infrared radiation efficiently, which makes it valuable in roofing, cladding and insulation-backed building panels. Common applications include metal roofing and wall systems, garage doors, agricultural buildings, appliance back panels, automotive underbody shields and solar mounting structures. The coating performs especially well in high-temperature and moderately corrosive environments where standard galvanized steel would degrade faster. Kailong offers competitive pricing on aluzinc coated steel sheet with consistent coating weight, and we can supply coil, slit strip or formed lengths for roll-forming lines.
9. Hot-Dip Galvanized Steel Sheet
Hot-dip galvanized steel sheet is made by dipping cold rolled or hot rolled strip into molten zinc, forming a metallurgically bonded zinc-iron alloy layer that sacrifices itself to protect the base steel. Coating weights range from Z100 to Z600, and buyers can choose regular spangle, minimised spangle or skin-passed finishes depending on whether appearance or paint adhesion dominates. The zinc coating provides excellent barrier and cathodic protection, so cut edges and minor scratches remain protected without immediate rusting. Applications include roofing and wall panels, structural framing, ducting, appliance bodies, automotive underbody parts, storage racks and agricultural equipment. Kailong supplies hot-dip galvanized material in a wide range of thicknesses and widths, with custom slitting and cut-to-length options to match your fabrication line. For exterior or humid service, this remains one of the most cost-effective corrosion protection choices available.
10. Aluminum-Silicon Coated Steel Sheet
Aluminum-silicon coated steel sheet uses a coating of roughly 90% aluminum and 10% silicon applied to a steel substrate, creating a surface that resists oxidation at high temperatures. The silicon content is essential: it suppresses the growth of a brittle aluminium-iron alloy layer and improves coating adhesion during heat exposure. This material performs reliably at sustained service temperatures of 600 °C to 800 °C, where ordinary galvanized or aluzinc coatings would fail quickly. Typical applications include automotive exhaust systems, mufflers, catalytic converter shells, heat shields, engine heat insulation panels, boiler baffles and industrial ovens. It also offers excellent heat reflectivity and, unlike bare steel, resists the scaling that shortens component life in hot exhaust environments. Kailong provides this specialised product with documented coating weight, mechanical properties and surface quality so that tier-one exhaust suppliers can rely on consistent performance batch after batch.
Why Choose Shanghai Kailong Industrial Co., Ltd.?
Buyers choose Shanghai Kailong because we combine a genuinely broad product range with the discipline of a specialised supplier. Under one roof you can source hot rolled steel coil, pressure vessel plate, automotive high-strength steel, stamping steel, pickled & oiled steel, aluminum sheet and four different coated steel families, which simplifies procurement and consolidates shipping documentation. We operate strict incoming quality control, review mill test certificates against the ordered specification, and reject material that does not meet the agreed chemistry or mechanical tolerances. Factory-direct pricing removes unnecessary trading layers, while consolidated loading and skilful packing reduce freight cost per ton. Custom processing — slitting, cut-to-length, edge trimming, oiling and coating selection — means the material arrives ready for your line rather than as an extra in-house operation. Our export team is experienced with incoterms, letters of credit, container loading plans and destination documentation, so your first order is no harder than your tenth.
Learn more about our background, mill relationships and inspection philosophy on the About Us page, or return to the Homepage to see our automotive steel and stamping capabilities in context. We treat every enquiry as a technical discussion, not a price list request, because the right grade selection often saves more money than the last few dollars per ton. Responsive communication matters too: quotations are typically returned within one working day, and technical questions are answered by people who understand rolling, coating and forming rather than by a generic call centre. Our target is a long-term supply relationship built on repeatable quality, not a single spot transaction.
Quality Assurance & Certifications
Quality assurance at Kailong begins before the order is placed and continues until the container is sealed. We source from mills operating under ISO 9001 quality management systems, and we provide EN 10204 3.1 mill test certificates as standard, with SGS, BV or other third-party inspection available on request. Each shipment is checked for dimensions, thickness tolerance, coating weight, surface condition and markings, and photographic records can be shared before dispatch. Traceability is maintained from heat number through to the finished coil, sheet or blank, which allows any issue to be investigated quickly and objectively. For pressure vessel and automotive customers, we can supply additional testing such as impact tests, hardness surveys, tensile testing or coating adhesion checks. Where a customer has an approved supplier specification, we work to it rather than simply to a generic grade standard.
Applications & Industries Served
Kailong material reaches a wide spread of industries, and that breadth is one reason our technical team understands so many downstream processes. Automotive customers use our high-strength and coated products for body structures, chassis parts, exhaust systems, brackets and battery enclosures, while stampers convert our formable grades into housings, panels and reinforcements. Pressure vessel and energy customers rely on our plate for boilers, tanks, heat exchangers and pipeline equipment that must pass rigorous inspection. The construction sector consumes large volumes of hot rolled coil, hot-dip galvanized steel sheet and aluzinc coated sheet for roofing, cladding, purlins and structural framing. Appliance, electronics and furniture manufacturers value our electro-galvanized and aluminum sheet for their clean surface and paintability, and agricultural equipment makers specify coated material for durability in harsh conditions. Whatever the application, we match grade, coating and surface finish to the real operating environment.
Frequently Asked Questions (FAQ)
What is a hot rolled steel coil and which grades does Kailong supply?
A hot rolled steel coil is steel that has been rolled above its recrystallization temperature and then coiled for transport and further processing. Kailong supplies Q195, Q235, Q345, SS400, A36, S235JR and S355JR in thicknesses from 1.2 mm to 25 mm, with slit strip and cut-to-length sheet available on request.
How do I decide between pressure vessel plate and ordinary hot rolled steel coil?
Choose pressure vessel plate when the component must contain pressure or operate at elevated or reduced temperature, because these grades are produced to ASTM, ASME, EN or GB standards with guaranteed toughness and impact testing. Ordinary hot rolled steel coil is more economical for structural, machinery and general fabrication work where pressure containment is not required.
What is automotive high-strength steel used for in modern vehicles?
Automotive high-strength steel is used in chassis and suspension parts, longitudinal beams, B-pillars, door intrusion bars and electric vehicle battery enclosures. It allows designers to reduce gauge and weight while maintaining crash performance, which improves both safety and range efficiency.
Why choose pickled & oiled steel for automotive stamping instead of plain hot rolled coil?
Pickling removes mill scale and oxide, leaving a clean surface that welds, paints and forms more predictably, while the oil film prevents flash rust during storage and shipment. For automotive stampings where surface defects and tool wear matter, pickled & oiled steel usually delivers better overall economics than untreated hot rolled coil.
What is the difference between electro-galvanized steel and hot-dip galvanized steel sheet?
Electro-galvanized steel receives a thin, very uniform zinc coating applied electrolytically, giving an excellent paint finish and good weldability for indoor and mildly corrosive service. Hot-dip galvanized steel sheet has a heavier, metallurgically bonded zinc coating that provides much longer corrosion protection outdoors and in humid environments.
When is aluzinc coated steel sheet a better choice than galvanized steel?
Aluzinc coated steel sheet performs better in high-temperature and moderately corrosive conditions and offers superior heat reflectivity, making it ideal for roofing, cladding and heat-shield applications. It typically delivers two to six times the corrosion life of a comparable galvanized coating.
Where is aluminum-silicon coated steel sheet normally used?
Aluminum-silicon coated steel sheet is designed for high-temperature service, so it is mainly used in automotive exhaust systems, mufflers, catalytic converter shells, heat shields and industrial oven components. Its coating resists oxidation at 600 °C to 800 °C, far beyond the limits of standard coated steels.
What are your minimum order quantity, lead time and payment terms?
MOQ depends on the product family and specification, but trial orders of one 20-foot container are usually workable for standard grades. Lead time is typically 15 to 30 days depending on stock availability and processing requirements, and we accept T/T, L/C at sight and other terms for established customers.
Can Kailong provide samples, mill test certificates and third-party inspection?
Yes. We can supply samples for qualification, EN 10204 3.1 mill test certificates as standard, and SGS, BV or customer-appointed third-party inspection on request. Full traceability from heat number to finished product is maintained on every shipment.
Do you offer custom sizes, slitting and coating options?
We offer slitting, cut-to-length, edge trimming, custom coil weight and specific oil film weights, along with coating selection across zinc, aluzinc and aluminum-silicon systems. Simply share your drawing or specification and our team will confirm feasibility, tolerance and pricing.
Conclusion: Source Your Steel and Aluminum from Kailong
Shanghai Kailong Industrial Co., Ltd. brings together hot rolled steel coil, pressure vessel plate, automotive high-strength steel, stamping steel, pickled & oiled steel, aluminum sheet, electro-galvanized steel, aluzinc coated steel sheet, hot-dip galvanized steel sheet and aluminum-silicon coated steel sheet in one reliable supply channel. Our competitive advantage rests on mill-direct pricing, documented quality, flexible processing and export experience that turns specifications into delivered containers without surprises. If you are evaluating suppliers for a new project, contact us through ourSupport page to request a quotation, arrange samples or discuss a long-term supply agreement. Send us your grade, thickness, width, coating and quantity, and we will respond with a clear offer, realistic lead time and the documentation your quality team needs.
Contact
Leave your information and we will contact you.