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🔩 钢材重量Steel Weight Calculator
按形状和尺寸算钢材重量：钢板 = 长 × 宽 × 厚，圆钢 = π d²/4 × 长，钢管 = π (D² - d²)/4 × 长；密度默认 7850 kg/m³（不锈钢约 7930）。本地处理。Steel weight by shape: plate = length × width × thickness, round bar = π d²/4 × length, tube = π (D² - d²)/4 × length; density 7,850 kg/m³ by default (stainless ≈ 7,930). Processed locally.
使用说明与常见问题How-to & FAQ
「钢材重量」是什么？What is the Steel Weight Calculator tool?
按形状和尺寸算钢材重量：钢板 = 长 × 宽 × 厚，圆钢 = π d²/4 × 长，钢管 = π (D² - d²)/4 × 长；密度默认 7850 kg/m³（不锈钢约 7930）。本地处理。Steel weight by shape: plate = length × width × thickness, round bar = π d²/4 × length, tube = π (D² - d²)/4 × length; density 7,850 kg/m³ by default (stainless ≈ 7,930). Processed locally.
如何使用「钢材重量」？How do I use the Steel Weight Calculator tool?
选择形状（板材、圆钢或钢管），填写长度、宽度或外径、厚度或内径（圆钢不填）、密度和数量，即可得到单件重量和总重量。结果会随输入实时更新。Choose the shape (plate, round bar or tube) and enter the length, width or outer diameter, thickness or inner diameter (not for bar), density and quantity to get the weight per piece and in total. The result updates as you type.
铝？Aluminium?
把密度改成约 2700 kg/m³ 即可。Change the density to about 2,700 kg/m³.
能举个计算实例吗？Can you show a worked example?
例如在「钢材重量」中填 形状 = 圆钢，长度 mm = 1000，宽度 / 外径 mm = 20，密度 kg/m³ = 7850，数量 = 1，结果区显示：单件重量：2.4662 kg；总重量：2.4662 kg；每米重量：2.4662 kg/mFor example, entering Shape = Round bar, Length mm = 1000, Width / outer diameter mm = 20, Density kg/m³ = 7850, Quantity = 1 in the Steel Weight Calculator gives: Weight each: 2.4662 kg; Total weight: 2.4662 kg; Weight per metre: 2.4662 kg/m
哪些输入会被检查？Which inputs are validated?
「钢材重量」会检查这些输入——「长度 mm」、「宽度 / 外径 mm」、「密度 kg/m³」：必须填写，须大于 0；「厚度 / 内径 mm（圆钢不填）」：所选方式用到时必须填写，须大于 0；「数量」：必须填写，不能为负数，须为整数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Steel Weight Calculator checks its inputs — "Length mm", "Width / outer diameter mm", "Density kg/m³": required, must be greater than 0; "Thickness / inner diameter mm (not for bar)": required when the chosen option uses it, must be greater than 0; "Quantity": required, cannot be negative, must be a whole number; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「钢材重量」的设置：「形状」可选 钢板、圆钢、圆管（默认 圆钢）；「长度 mm」默认 1000；「宽度 / 外径 mm」默认 20；「厚度 / 内径 mm（圆钢不填）」可留空；「密度 kg/m³」默认 7850；「数量」默认 1。每次生成结果都按当前设置处理。Settings in the Steel Weight Calculator — "Shape": Plate, Round bar, Round tube (default Round bar); "Length mm" default 1000; "Width / outer diameter mm" default 20; "Thickness / inner diameter mm (not for bar)" optional; "Density kg/m³" default 7850; "Quantity" default 1. The result always uses the current settings.
计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?
「钢材重量」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Steel Weight Calculator uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.
「钢材重量」免费吗？需要注册吗？Is the Steel Weight Calculator free? Do I need an account?
「钢材重量」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Steel Weight Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.