行业组件数据 · 2026

法兰

A flange is a protruding rim or collar used to connect structural steel I-beams, providing secure attachment points for bolts or welding.

技术定义与适配语境
典型 法兰 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

In industrial engineering, a flange is a critical structural component designed as a projecting flat rim or collar, typically integrated into or attached to structural steel I-beams. It serves as a reinforced connection interface that distributes mechanical loads, resists bending moments, and enables secure joining of beams through bolting, riveting, or welding. Flanges are engineered to maintain structural integrity under tension, compression, and shear forces in construction and machinery frameworks.

组件规格

定义
In industrial engineering, a flange is a critical structural component designed as a projecting flat rim or collar, typically integrated into or attached to structural steel I-beams. It serves as a reinforced connection interface that distributes mechanical loads, resists bending moments, and enables secure joining of beams through bolting, riveting, or welding. Flanges are engineered to maintain structural integrity under tension, compression, and shear forces in construction and machinery frameworks.
工作原理
Flanges function by providing a broad, flat surface area that increases the contact zone between connected I-beam sections. This distributes stress concentrations, prevents localized deformation, and enhances load-bearing capacity. The flange's geometry allows for precise alignment and secure fastening, transferring forces efficiently across the joint while maintaining structural stability.
材料
Typically manufactured from structural steel grades such as ASTM A36A572or A992with carbon content 0.20-0.30%yield strength 250-450 MPa. May include alloy steel variants for high-stress applications. Surface treatments include hot-dip galvanizingpaintingor powder coating for corrosion resistance.
Width
100-300 mm
Thickness
10-40 mm
Hole Pattern
Standardized spacing per engineering drawings
Surface Finish
Mill scale removed, Sa 2.5 blasted if coated
Bolt Hole Diameter
16-30 mm
Flatness Tolerance
±1.5 mm/m
标准
ISO 4014ISO 4016DIN 7990ASTM A325EN 10025

行业分类与别名

法兰 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Incorrect bolt torque during installation->Joint loosening leading to structural instability->Use calibrated torque wrenches and follow manufacturer specifications
Exposure to corrosive environments without protection->Material degradation and reduced cross-sectional strength->Apply appropriate coatings (galvanizing, painting) and implement regular inspection schedules
Design exceeding material yield strength->Plastic deformation or fracture under load->Conduct structural analysis and select appropriate steel grade with safety factors

工业生态与工程逻辑

0
Improper alignment causing stress concentrations
1
Corrosion in untreated steel reducing load capacity
2
Fatigue failure from cyclic loading
3
Bolt loosening due to vibration

合规与检测

tolerance
Dimensional tolerances per ISO 2768-m, flatness within 0.1% of width, hole alignment within ±0.5 mm
test method
Ultrasonic testing for material defects, dimensional verification with CMM, load testing per ASTM E8/E8M

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制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the primary purpose of a flange on an I-beam?

The flange provides a reinforced connection point for joining I-beams securely, distributing loads and preventing structural failure at joints.

Can flanges be welded or bolted?

Yes, flanges are designed for both welding and bolting methods, with standardized hole patterns for bolt connections and prepared edges for welding.

What materials are commonly used for industrial flanges?

Structural steel grades like ASTM A36 and A992 are most common, with alloy steels used for high-stress applications and coatings for corrosion protection.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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初步技术归类
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URN:CNFX:ME:UNIT:FLANGE