Water Stop Steel Plate

Introduction:

Water Stop Steel Plate, also known as steel water stop, steel water bar, or anti-seepage steel strip, is a structural waterproofing material embedded into concrete joints to prevent water leakage. It is widely used in underground basements, water tanks, tunnels, subway stations, retaining walls, and other structures requiring reliable water sealing at construction joints. The steel plate is embedded across the joint between two concrete pours, blocking seepage paths and enhancing water-tight integrity. Yoshine supplies water stop plates made of hot-rolled or galvanized Q235 or Q345 steel, manufactured in compliance with EN 10204 and GB/T 23448 for material certification, under ISO 9001-certified production.

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Product Details

Material Selection Based on Environmental & Structural Requirements

Width (mm)	Thickness (mm)	Material Type	Application Scenarios
200–300	2.0–4.0	Q235 Carbon Steel (Hot-Dip Galvanized)	General underground structures (basements, tunnels)
250–400	3.0–6.0	Q345 High-Strength Steel (Epoxy-Coated)	High-load structures (bridges, dams)
200–500	2.0–5.0	304/316 Stainless Steel	Corrosive environments (coastal areas, chemical plants)
Custom	Custom	Custom (e.g., Bimetallic Composite)	Special conditions (high-temperature, strong acid/alkali resistance)

Customization & Processing Services

Yoshine provides pre-processing services including cutting, punching, bending, and drilling based on your drawings. Surface treatments (galvanizing, epoxy coating) and pre-formed shapes (U/V-bends) are available for direct installation.

Product Features

• Prevents water seepage through construction joints in concrete.

• High Tensile Strength: 400–550 MPa (Q235/Q345 grades), exceeding ASTM A36 requirements.
• Galvanized Coating: 80–120 μm zinc layer (ISO 1461) for enhanced corrosion resistance.

• Available in plain or galvanized finish for corrosion resistance.

• Suitable for vertical and horizontal joint waterproofing.

• Complies with EN 10204, ISO 9001, and international engineering standards.

Quality Assurance

Yoshine water stop steel plates are manufactured in compliance with ISO 9001 standards and tested for thickness, flatness, zinc coating (if galvanized), and tensile strength. Each batch undergoes visual inspection and dimensional checks, ensuring accurate installation and long-term performance. Products meet EN 10204 and GB/T 23448, are suitable for export with full material certificates and traceability reports.

Advantages

Proven Waterproofing in Critical Structures

The embedded steel plate physically blocks seepage paths within concrete joints, offering strong protection against groundwater ingress, especially in basements or tunnels.

Superior Strength and Durability

Made from high-strength Q235 or Q345 steel, the water stop plate integrates well with poured concrete and maintains structural rigidity under pressure.

Corrosion-Resistant Options

Galvanized surfaces or additional coating options ensure long-term resistance to rust, even in wet or aggressive soil environments.

Easy to Customize for On-Site Fit

Whether flat, bent, perforated, or pre-cut, our water stop plates can be tailored to specific design details for fast and accurate installation.

Trusted for Infrastructure and Civil Projects

Used across tunnels, subways, reservoirs, and foundation slabs, Yoshine’s steel water stops provide proven sealing solutions in major engineering applications worldwide.

International Naming & Equivalent Terms

Region / Standard	Equivalent Name / Term
China (GB/T 23448)	止水钢板 / 钢质防水带 / 嵌入式止水带
USA (ASTM A36)	Steel Water Stop / Water Stop Plate / Water Bar
Europe (EN 10204)	Embedded Steel Water Bar / Waterstop Plat
International Naming	Anti-Seepage Steel Plate / Water Barrier