news — from the mill.
Production notes, industry updates, and a little colour on what we’re making this month.
How to Read Steel Coil Mill Test Certificate: A Buyer’s Guide for 2026
Review certificate records, scope and current status. Confirm order-specific documentation and inspection requirements with the export team. What Is a Steel Coil Mill Test Certificate? A mill test certificate (MTC), also called a material test report (MTR), is a legal document issued by the steel manufacturer. It declares the chemical composition, mechanical properties, and heat […]
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PPGI Coil Top Coat and Back Coat Explained: Complete Guide for 2026
Review certificate records, scope and current status. Confirm order-specific documentation and inspection requirements with the export team. What Is PPGI Coil? Understanding the Substrate and Coating System PPGI stands for Prepainted Galvanized Steel, also referred to as color coated steel coil. The base material is hot dip galvanized steel coil, which is then coated with […]
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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
Review certificate records, scope and current status. Confirm order-specific documentation and inspection requirements with the export team. Why Galvanized Steel Coil Is the Standard for Solar Mounting Structures Solar mounting systems face constant UV radiation, temperature swings, and moisture. A galvanized steel coil for solar mounting structure offers a zinc-iron alloy layer that prevents rust […]
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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
Review certificate records, scope and current status. Confirm order-specific documentation and inspection requirements with the export team. What Determines PPGI Coil Warranty and Color Fastness? The longevity of a color coated steel coil is not a matter of luck. It is engineered through three layers: the hot dip galvanized steel substrate, the chemical pre-treatment, and […]
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High-Quality Galvanized Steel Strip for Steel Pipe Making
Certificate records — Review the certificate holder, scope and current verification status. Confirm the documents applicable to your order. Why Galvanized Steel Strip Is Essential for Pipe Production Galvanized steel strip serves as the foundation for corrosion-resistant pipes used in construction, infrastructure, and industrial applications. The hot dip galvanizing process bonds a protective zinc layer […]
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GI Coil Regular Spangle vs Zero Spangle: Key Differences for Buyers
Certificate records — Review the certificate holder, scope and current verification status. Confirm the documents applicable to your order. What Is Spangle in Galvanized Steel Coil? Spangle refers to the visible crystalline pattern that forms on the surface of hot dip galvanized steel during the solidification of the zinc coating. The size and visibility of […]
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Anti Finger Print AFP Galvalume Coil – Premium Quality from China
Review certificate records, scope and current status. Confirm order-specific documentation and inspection requirements with the export team. What Is Anti Finger Print AFP Galvalume Coil? Anti finger print (AFP) galvalume coil is a premium steel product coated with a thin, transparent polymer layer that prevents fingerprints, smudges, and stains from adhering to the surface. The […]
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