news — from the mill.
Production notes, industry updates, and a little colour on what we’re making this month.
PPGI Coil for Roller Shutter Door – Durable Prepainted Steel
When sourcing PPGI coil for roller shutter door manufacturing, buyers demand materials that withstand daily mechanical stress, UV exposure, and corrosion. At ChinaCNU Steel, we produce prepainted galvanized steel coil engineered specifically for roller shutter profiles, offering consistent thickness, superior adhesion, and long-lasting color retention. Our Qingdao factory operates with ISO 9001:2015 certification and 15+ […]
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Galvanized Steel Coil for Highway Guardrail: 2026 Buyers Guide
When sourcing galvanized steel coil for highway guardrail, infrastructure engineers and procurement managers demand materials that meet strict safety standards, corrosion resistance, and cost efficiency. As a leading galvanized steel supplier with 15+ years of export experience, ChinaCNU Steel supplies high-quality GI coil specifically designed for roadside barrier systems. Our hot dip galvanized coil is […]
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How to Read Steel Coil Mill Test Certificate: A Buyer’s Guide for 2026
Understanding how to read steel coil mill test certificate documents is essential for any buyer of galvanized steel coil, PPGI coil, or GI coil. Without proper verification, you risk receiving material that fails structural or coating specifications. At ChinaCNU Steel, we have exported over 250,000 tons of steel coils to 80+ countries since 2010, and […]
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PPGI Coil Top Coat and Back Coat Explained: Complete Guide for 2026
Understanding the difference between PPGI coil top coat and back coat is essential for any buyer of prepainted galvanized steel coil. The top coat provides color, UV resistance, and durability, while the back coat protects against corrosion and moisture from the reverse side. In 2026, global demand for color coated steel coil continues to rise, […]
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Galvalume Steel Coil AZ50 vs AZ150: Which Coating Grade Wins?
When sourcing coated steel for roofing, siding, or industrial fabrication, one of the most critical decisions is choosing between galvalume steel coil AZ50 vs AZ150. These two coating grades—defined by their aluminum‑zinc alloy mass per square meter—directly impact corrosion resistance, formability, and project lifespan. As a leading galvalume supplier China, ChinaCNU Steel produces both AZ50 […]
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SPCC vs DC01 Cold Rolled Steel Coil: Key Differences for 2026
When sourcing SPCC vs DC01 cold rolled steel coil, buyers often face confusion over which grade meets their application requirements. Both materials are widely used in automotive, appliance, and construction industries, but their chemical composition, mechanical properties, and surface finish differ significantly. Understanding these differences is critical for optimizing production costs and ensuring product performance. […]
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Galvanized Steel Coil for Solar Mounting Structure – High-Strength & Corrosion-Resistant
When engineering a galvanized steel coil for solar mounting structure, specifiers demand a material that withstands decades of outdoor exposure while maintaining structural integrity. Our hot dip galvanized coil, available in zinc coatings from Z60 to Z275, delivers the durability required for utility-scale and rooftop solar arrays. As a leading galvanized steel supplier with a […]
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Steel Coil Container Loading Capacity 20ft 40ft: Complete Guide 2026
Understanding steel coil container loading capacity 20ft 40ft is critical for buyers and logistics managers in the steel industry. When you ship galvanized steel coils or PPGI coils from Qingdao, every centimeter of container space must be optimized to reduce freight costs and ensure safe transit. At ChinaCNU Steel, with 15+ years of export experience, […]
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PPGI Coil Warranty and Color Fastness: The 2026 Buyer’s Guide
When sourcing PPGI coil warranty and color fastness for large-scale construction or roofing projects, procurement managers need clear, data-backed answers. The performance of a prepainted galvanized steel coil depends on two critical factors: the manufacturer’s warranty terms and the actual UV resistance of the color coating. This guide breaks down what to expect from an […]
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High-Quality Galvanized Steel Strip for Steel Pipe Making
When sourcing raw materials for tubular products, selecting the right galvanized steel strip for steel pipe making directly impacts corrosion resistance, weldability, and final product longevity. As a B2B buyer, you need a consistent supply of GI coil that meets exacting specifications for ERW pipe, conduit, and structural tubing. ChinaCNU Steel, operating from our Qingdao […]
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