Products FAQ

DX51D+Z275 indicates that the base material is DX51D, with a hot-dip galvanized coating of pure zinc, and a total coating weight of 275 g/m² on both sides. Here, “Z” stands for the hot-dip galvanizing process using pure zinc, and “275” is the nominal total coating weight.

DX51D galvanized steel coils are hot-dip galvanized steel coils that comply with the European EN 10346 standard. They are high-quality cold-formed galvanized steel with excellent surface finish, stable zinc coating adhesion, good ductility, and outstanding corrosion resistance. They are widely used in civil construction, manufacturing, and industrial processing sectors worldwide.

We supply DX51D+Z/ZF/ZA/AZ/ZM galvanized coils in a full range of specifications, with zinc coating weight grades ranging from Z80 to Z275. We strictly control the uniformity of the zinc coating thickness, surface flatness, and internal grain structure to effectively prevent oxidation, rust, coating peeling, and structural deformation during processing and use. Every batch of products undergoes 100% quality inspection, including surface defect detection, zinc coating thickness measurement, dimensional calibration, and mechanical property verification. We support custom processing, provide complete inspection certificates, and have global cross-border delivery capabilities, fully meeting the large-scale procurement and high-standard processing needs of the industrial and construction sectors both domestically and internationally.

Z-direction performance refers to the steel plate’s resistance to laminar tearing in the thickness direction. When BV EH36 steel plates are used in critical areas subject to high welding stresses or tensile forces in the thickness direction (such as offshore platform joints and T-welds), additional laminar tearing resistance tests at the Z15, Z25, or Z35 levels are typically required.

We supply BV EH36 marine steel plates in the following dimensions:

BV EH36 shipbuilding steel plates are high-strength structural steel plates for marine applications with a yield strength of 355 MPa and impact toughness at ultra-low temperatures of -40°C. The product is primarily used in heavy-duty icebreakers, large polar ocean-going merchant ships, ultra-large offshore platforms in ice-covered regions, heavy-duty marine energy facilities in extremely cold environments, and various cryogenic, heavy-load marine engineering projects with stringent requirements for strength and low-temperature toughness. It serves as a critical material for core freeze-resistant load-bearing structures in the harsh environments of polar ice zones.

The standard size ranges are as follows:

Thickness: 5 - 120 mm

Width: 1,500 - 4,000 mm

Length: 6,000 - 18,000 mm

In addition, custom cut sizes are available upon customer request, and we support UT (ultrasonic testing), Z-direction property testing, and third-party inspection.

We provide one-stop value-added processing services, including precision cutting, bending, drilling, beveling, surface rust removal, shot blasting, anti-corrosion coating, and specialized heat treatment. These services fully meet the various custom processing needs of polar shipbuilding and offshore engineering projects in extremely cold regions.

The key differences between the two lie in their low-temperature toughness ratings and applicable scenarios:

BV DH32: Features impact toughness at -20°C and is suitable for conventional cold waters and marine engineering projects in areas with seasonal low temperatures;

BV EH32: Offers impact toughness at -40°C, with superior resistance to brittle fracture and freeze-thaw cycles, and is specifically designed for more demanding environments such as polar regions, ice-covered waters, and extremely cold offshore engineering projects.

BV Grade EH32 shipbuilding steel plates are BV-certified cryogenic structural steel plates for polar vessels. They are primarily used in critical, brittle-resistant, cold-resistant structures for polar and subpolar ocean-going vessels; high-strength load-bearing components for platforms in high-latitude, extremely cold waters; cryogenic marine infrastructure; and the manufacture of specialized cold-resistant marine equipment. They serve as the core freeze-resistant structural material for vessels operating in polar and ice-covered regions, as well as for marine engineering projects.