LC 条款下，一套和船期对不上的提单，可能让整批构件款卡在银行。节点这样写更安全。Under LC terms, a bill of lading that misses the presentation window can trap your payment. Write milestones like this.
钢构出口采用信用证付款时，最常见的纠纷不是质量，而是单据：交货期、提单日期与 LC 有效期对不上。
我们的经验是按生产节点拆分付款与单据：定金 30%；发货前凭第三方验货报告与装箱单支付 60%；尾款 10% 凭提单副本。这样的节点安排，买卖双方的风险都可控。
三个实务要点：一是 LC 交货期务必与生产周期之间留 2–3 周缓冲；二是提单日期早于或晚于 LC 规定窗口都会构成不符点，订舱时要提前确认船期；三是把「第三方验货报告」这类可控单据写进 LC 要求，避免依赖不可控机构的文件。
合同谈得好，比谈判桌上争一两个点更能保护利润。
When steel exports are paid by letter of credit, the disputes are rarely about quality — they're about documents: delivery dates, bill of lading dates and LC expiry that don't line up.
Our experience: split payment and documents by production milestones — 30% deposit; 60% before shipment against a third-party inspection report and packing list; 10% balance against a copy B/L. Both sides keep risk under control.
Three practical points: leave a 2–3 week buffer between the LC shipment date and the production schedule; a B/L dated even one day outside the LC window is a discrepancy, so confirm vessel schedules early; and require controllable documents (like third-party inspection reports) in the LC rather than papers from parties you can't control.
A well-drafted contract protects your margin better than haggling over a point or two.
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