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关于一次钢材采购背后各项决策的深度解读——牌号选型、证书认证、结构设计，数据来源跟站内其它页面一致。
Design & engineering
Bulb Flat vs Angle Steel for Ship Hull Stiffeners: Which One Do You Need?
Bulb flat and angle steel do the same structural job — stiffening plate against buckling — but shipbuilding has largely moved to bulb flat for a specific, explainable reason.
阅读全文Certification & qualityEN 10204 3.1 vs 3.2 Mill Test Certificates: What International Steel Buyers Need to Know
EN 10204 doesn't set what a plate has to meet — it sets who is authorized to state, in writing, that it meets it. The difference between a 3.1 and a 3.2 certificate comes down to that one point.
阅读全文Grade selectionHow to Choose a Shipbuilding Steel Grade for Cold-Climate and Ice-Class Vessels
Cold-climate and ice-class specifications aren't asking for a stronger plate — they're asking for one that stays tough at low temperature. Here's what the impact-test temperature actually measures, and what it means for your order.
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