Structural Steel Plate Supplier - Q235B Q355B S355JR for Construction

Hot Rolled Steel Plate Cut to Size - 10,000+ Tons In Stock for Fast Delivery

Medium Heavy Steel Plate Manufacturer - CE Certified with CNAS Lab Testing

Why Partner with Sanhe Steel?

Qingdao Sanhe Steel Co., Ltd.

Your Trusted Steel Supplier Since 2008 in China — For Construction, Manufacturing & Infrastructure

For over 16 years, Qingdao Sanhe Steel Co., Ltd. has evolved from a local trader into a comprehensive steel supply and processing partner. We don't just sell steel — we provide mission-critical solutions for complex engineering projects worldwide.

With our CNAS-accredited in-house laboratory and a full suite of CNC processing equipment, we guarantee every product meets international standards— and we can cut, slit, or level it to your exact specifications before delivery. Whether you're procuring for a bridge project in Southeast Asia, an automotive plant in Europe, or a factory expansion in the Middle East, Sanhe Steel delivers compliance, quality, and reliability.

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Why Partner with Sanhe Steel?

Construction & Infrastructure

High-rise buildings, bridges, tunnels, and steel structure factories. We supply Q235B, Q355B, and S355JR steel plates, H-beams, and pipe piles — all available with CE certification for EU projects.

Industrial Manufacturing

Machinery, automotive parts, sheet metal fabrication, and home appliances. We offer hot-rolled, cold-rolled, galvanized, and high-strength steel with IATF 16949 certification.

Energy & Transportation

Oil & gas pipelines, power transmission towers, shipbuilding, and port facilities. We provide weathering steel, wear-resistant steel, and corrosion-resistant pipes — engineered for long-term durability in harsh environments.

Custom Processing & Cut-to-Size

Our factory is equipped with CNC shearing and flattening production lines, longitudinal shearing and cutting machines. We can complete shearing, cutting and leveling according to your precise dimensions.

We Are Loyal To Customer Satisfaction.

Frequently Asked Questions by Global Steel Buyers

Quick Answers

1. Are you a factory or a trading company?

Qingdao Sanhe Steel Co., Ltd. is a bona fide manufacturing facility. We own standardized steel plate processing workshops equipped with a full suite of leveling, slitting, cutting, and precision processing machinery. Furthermore, we maintain long-term strategic partnerships with leading steel mills—such as Baowu and HBIS—giving us robust in-house processing and customization capabilities. This allows us to simultaneously meet the diverse needs of large-scale engineering procurement, international trade orders, and precision processing customization projects.

2. How do you guarantee the quality and compliance of steel for international projects?

Every batch of steel we supply is accompanied by MTC (Mill Test Certificate) and, upon request, EN 10204 Type 3.1 or 3.2 inspection documents. Our products are certified with CE (EU CPR), IATF 16949 (automotive), ISO 9001, ISO 14001, and ISO 45001. We also welcome third-party inspections (SGS, Bureau Veritas, etc.) at your convenience. Our CNAS-accredited in-house laboratory ensures every product meets ASTM, JIS, and EN standards before shipment.

3. Can you provide custom processing and cut-to-size steel products?

Absolutely. Our factory is equipped with CNC shearing production lines, longitudinal cutting banding machines, and plate shearing machines. We can process steel plates according to your precise dimensions - including non-standard lengths, widths, and irregular shapes. You need to precisely cut steel strips and precisely cut steel plates to the specified lengths, and we can complete the delivery with strict tolerance control. This will save you time, reduce material waste, and eliminate the need for your own secondary processing steps.

4. What is your typical lead time for stock and customized orders?

For standard stock items, we can ship within 7-15 days after order confirmation. For custom processing orders, lead times typically range from 15-35 days depending on the complexity of processing and quantity. With our strategic mill partnerships and substantial inventory (10,000+ tons in stock), we can also accommodate urgent orders with expedited shipping. We'll always provide you with a clear delivery schedule before order confirmation.

5. What payment terms and shipping methods do you support for export orders?

We support flexible payment terms including T/T (wire transfer), L/C (letter of credit), and D/P. For first-time cooperation, we typically request a 30% deposit + 70% balance before shipment or against B/L copy. For shipping, we work with all major freight forwarders and can arrange FOB (Qingdao Port), CIF, CFR, or DDP terms based on your preference. We have extensive experience with export documentation, customs clearance, and container loading optimization.

6. Do you offer technical support for steel grade selection and material substitution?

Yes — and this is where our 16+ years of experience adds real value. Our technical team can advise you on steel grade selection — for example, when to use Q235B vs. S235JR, or Q355B vs. S355JR for structural applications. We can recommend cost-effective alternatives that meet your project's mechanical property and compliance requirements. Our team has served projects across construction, automotive, energy, and shipbuilding — we understand the material requirements of each industry.

Hot-Selling Steel Products

In Stock & Ready to Ship

Q235 Steel Plate

If you are looking for a reliable manufacturer of Q235 Steel Plates, please choose Sanhe Steel. As a leading supplier in the industry, Sanhe Steel always has tens of thousands of tons of stock available, ensuring efficient delivery. The Q235 steel plate material is a common low-carbon steel. This material, due to its excellent comprehensive performance, has become the preferred material for general welded structural components and load-bearing components.

Carbon Steel Plate

Sanhe Steel is a professional wholesaler that combines steel trading and plate processing. It specializes in the sale of Carbon Steel Plates, Medium and Thick Plates, Pattern Plates, High-Strength Steel, and Openings Plates. As a leading physical manufacturer in the industry, we deeply understand the strict requirements for safety performance in industrial and commercial environments.

Mild Steel Plate

Sanhe Steel is a professional Mild Steel Plate Manufacturer and Supplier in China that integrates steel trading and processing. As a leading physical factory in the industry, we focus on operating various types of steel products such as low-carbon steel plates, and they are suitable for the needs of multiple industries.

Polished Stainless Steel Checkered Plate

Sanhe Steel is a China manufacturer and supplier of polished stainless steel checkered plate in 304 and 316L, with the anti-slip pattern rolled into the plate and the surface finished to satin, bright annealed or mirror polish. The polished face is what allows the plate to be used on food, pharmaceutical and kitchen floors. Send the grade, finish and sizes for a quotation.

Marine Grade Medium and Heavy Plate

Sanhe Steel is a China manufacturer and supplier of marine grade medium and heavy plate in 6-80 mm, rolled to classification society requirements with verified Charpy impact toughness from 0 C down to -40 C. TMCP rolling keeps the carbon equivalent low, and Z-direction grades are available. Set out the grade and the class rule and we return a quotation.

Hot Rolled Plate for Bridge Engineering

Sanhe Steel is a China manufacturer and supplier of hot rolled plate for bridge engineering, produced to GB/T 714 and to the EN and ASTM equivalents used on export projects. Low-temperature impact toughness, through-thickness performance and plate flatness are verified per batch, and mill certificates ship with every consignment. Ask for a quotation with the grade and drawing.

1.5-100mm Checkered Plate

Sanhe Steel is a China manufacturer and supplier of 1.5-100mm checkered plate, rolling the anti-slip pattern into the plate rather than welding or bonding it on. The range runs from 1.5 mm light sheet to 100 mm heavy structural plate, in teardrop, diamond, 5-bar and 2-bar patterns, with hot-dip galvanizing available. Send the thickness, pattern and cut sizes for a quote.

Hot Rolled Steel Plate for Marine Offshore Use

As a china steel manufacturer and supplier, Sanhe Steel produces hot rolled steel plate for marine offshore use. Our factory supplies heavy-duty carbon steel plate with good corrosion-resistant performance, thickness range 6-80mm, to meet offshore platform and vessel-building strict material standards. Sanhe Steel provides certified steel plate for marine offshore use with full DNV, ABS, and LR classification approvals.

High Strength S235JR Medium and Heavy Plate

High strength S235JR medium and heavy plate from Sanhe Steel is supplied from China with stable mechanical properties, reliable dimensions, and flexible cutting options. As an experienced steel manufacturer and supplier, Sanhe supports standard and customized plate sizes for construction, machinery, and structural applications.

1.5-100mm Checkered Plate for Bridge Walkway

Sanhe Steel is a direct China steel plate manufacturer and factory supplier producing durable 1.5-100mm checkered plate for bridge walkway and industrial floor systems. Sanhe Steel manufactures heavy-duty raised-pattern floor plates, offering ultra-durable checkered plate for bridge walkway systems, elevated platform decking, stair treads, and heavy machinery steps.

Wear Resistant Hot Rolled Heavy Steel Plate Structural

Wear resistant hot rolled heavy steel plate structural from Sanhe Steel is developed for equipment and structures exposed to repeated abrasion, impact and heavy mechanical loads. Made from wear-resistant steel and processed through hot rolling, the plate offers a practical combination of hardness, strength and toughness, helping extend the service life of components that would otherwise require frequent replacement. It can be supplied in different wear-resistant grades and thicknesses according to the working conditions and fabrication requirements.

SGCC Hot Dip Galvanized Steel Sheet

Sanhe Steel is a China-based steel supplier and manufacturer supplying galvanized steel, hot-rolled steel plate, medium and heavy plate and other carbon and structural steel products. SGCC hot dip galvanized steel sheet from Sanhe Steel combines a high-strength or harder steel substrate with a protective zinc coating, providing a practical solution for applications that require better resistance to wear, impact and surface corrosion at the same time.

Email Us

sales08@sanhesteels.com

Call Us

+86-13376423291

Address

No. 1188, Lanzhou West Road, Jiaozhou City, Shandong Province, China

Send Inquiry

Applications

Proven Expertise Across Industries

Construction Engineering Field

Real estate residential buildings, municipal infrastructure, bridges and tunnels, rail transit, steel structure factories, prefabricated buildings, all scenarios including main structures, supports, and accessories have steel demand that this product can meet.

Industrial Manufacturing Sector

General machinery, construction machinery, automotive parts, household appliances and furniture, sheet metal processing, meet the requirements for precision steel used in component manufacturing, equipment frames, and shell forming, etc.

Energy and Transportation Sectors

Oil and gas pipelines, power towers, port terminals, container production, shipbuilding, rail transit equipment - all these require special steel with properties such as corrosion resistance, high strength, and wear resistance to meet the demands.

Public Services and Infrastructure Sector

Municipal water supply pipelines, sanitation facilities, storage shelves, decoration projects, hardware accessories, covering both conventional and customized lightweight and general-purpose steel applications.

Industry Insights & Technical Resources

Expert Knowledge for Steel Buyers

2026-10-21

How Can Wear Resistant Hot Rolled Heavy Steel Plate Structural Solutions Improve Durability in Demanding Projects

Wear, impact, and repeated mechanical loading can shorten the service life of steel components used in mining, construction, material handling, and heavy equipment. Selecting the right Wear Resistant Hot Rolled Heavy Steel Plate Structural solution helps engineers balance abrasion resistance, structural strength, fabrication requirements, and long-term operating costs.

2026-10-14

How Can Hot Rolled Steel Plate for Marine Offshore Use Improve Structural Safety and Service Life

Sanhe supplies Hot Rolled Steel Plate for Marine Offshore Use for demanding shipbuilding and offshore engineering projects, with thickness options from 6 mm to 80 mm and support for DNV, ABS, and LR classification requirements, subject to the applicable product documentation and project specifications.

2026-10-10

Why Is High Strength S235JR Medium and Heavy Plate a Smart Choice for Structural Engineering Projects

Sanhe supplies High Strength S235JR Medium and Heavy Plate for construction, machinery manufacturing, and industrial steel fabrication. Combining dependable structural performance with practical weldability and flexible processing options, S235JR steel plate is a versatile solution for projects requiring reliable load-bearing components and efficient fabrication.

2026-09-30

How Can Galvanized Floor Diamond Plate Improve Safety, Durability, and Long-Term Project Performance

When industrial floors, walkways, platforms, stairs, or vehicle surfaces need dependable traction and corrosion protection, Sanhe Steel provides Galvanized Floor Diamond Plate as a practical steel solution. Combining a raised diamond pattern with a protective galvanized coating, this plate is designed for demanding environments where slip resistance, structural strength, and service durability matter.

2026-09-24

Sanhe Steel Celebrates Mid-Autumn Festival and National Day！

To celebrate the traditional Mid-Autumn Festival and thank our team for their hard work and dedication throughout the year, Sanhe Steel has prepared mooncake gifts for all employees. These festive gifts carry the company’s care and best wishes, expressing our appreciation for every team member’s efforts in steel production, quality inspection, logistics coordination and customer service. A united and motivated team is the core strength that enables us to deliver reliable steel products to customers at home and abroad.

2026-09-23

Why Is Hot Rolled Checkered Steel Plate for Platforms a Smart Choice for Safe and Durable Industrial Flooring

When industrial platforms must balance slip resistance, structural strength, fabrication flexibility, and long service life, Sanhe provides Hot Rolled Checkered Steel Plate for Platforms as a practical solution for walkways, maintenance platforms, stair landings, loading areas, and equipment access floors. Available in Q235B, Q355B, SS400, and A36 grades, the plate can be supplied in 3–12 mm standard thicknesses with customized dimensions and surface treatments.

2026-09-16

What Makes SGCC Hot Dip Galvanized Steel Sheet a Reliable Choice for Corrosion-Resistant Industrial Applications

Sanhe is a China-based steel supplier and manufacturer providing SGCC Hot Dip Galvanized Steel Sheet for industrial structures, machinery, transportation equipment, outdoor facilities, and other applications where mechanical performance and corrosion protection are both important. By combining a selected steel substrate with a protective zinc coating, galvanized sheet can provide a practical balance between durability, fabrication performance, and resistance to atmospheric corrosion.

2026-09-10

How Can Wear Resistant Hot Rolled Heavy Steel Plate Structural Improve Service Life in Demanding Industrial Applications

Sanhe Steel supplies Wear Resistant Hot Rolled Heavy Steel Plate Structural for applications where abrasion, impact, and heavy mechanical loads can accelerate steel deterioration. With typical thicknesses of 6–50 mm, hardness options such as NM360 and NM400, and cutting services including plasma, flame, and water-jet processing, the material can be selected and fabricated according to actual operating conditions.

2026-09-04

Why Is Wear Resistant Hot Rolled Heavy Steel Plate Structural Essential for Demanding Industrial Applications

When industrial equipment must withstand continuous abrasion, impact, and heavy mechanical loads, material selection directly affects service life and maintenance costs. Sanhe supplies Wear Resistant Hot Rolled Heavy Steel Plate Structural designed to provide a practical balance of hardness, strength, toughness, and fabrication performance for demanding applications such as mining, material handling, construction machinery, crushers, and transport equipment.

2026-08-25

How Does Cold Rolled Steel Plate Improve Manufacturing Performance?

Cold Rolled Steel Plate is widely selected when manufacturers need a combination of dimensional accuracy, smooth surface quality, reliable forming performance, and consistent mechanical properties. Unlike hot-rolled material, cold-rolled steel is processed through controlled rolling and finishing operations that help achieve tighter tolerances and a cleaner surface. These characteristics make it suitable for automotive components, household appliances, electrical cabinets, precision equipment, furniture, sheet-metal fabrication, and many other applications. This article explains how Cold Rolled Steel Plate is produced, how to select the right grade and thickness, which problems it can solve, and how Sanhe Steel supports customized material requirements.

2026-08-20

What Should You Know About Steel Plate Bending and Forming Before Ordering?

Steel Plate bending and forming is one of the most common fabrication processes for structural steel projects. Many purchasing teams encounter unexpected production issues, including cracking, spring-back, and dimensional deviation, after material arrival.

2026-08-20

How to Select the Right Wear-Resistant Plate?

Many procurement and engineering teams default to specifying the hardest available wear resistant plate for mining, bulk handling and heavy equipment projects. Yet higher hardness does not always equal the best overall performance. Improper material selection can lead to welding cracking, bending failure, expensive rework and unnecessary material cost, even when wear resistance looks impressive on paper.