行业组件数据 · 2026

进出口法兰

Inlet/Outlet Flange is a standardized mechanical interface component used to connect exhaust fans/blowers to ductwork or piping systems, ensuring secure, leak-proof connections for airflow management.

技术定义与适配语境
典型 进出口法兰 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。

The Inlet/Outlet Flange is a critical mounting component in exhaust fan and blower systems, designed as a flat, circular, or rectangular plate with precisely drilled bolt holes and a central opening. It serves as the interface between the fan housing and external ductwork, providing structural support, alignment, and sealing through gaskets. Engineered to withstand operational pressures, vibrations, and thermal expansion, it ensures efficient airflow transfer while preventing leaks, backflow, or detachment. Common in industrial ventilation, HVAC, and process systems, flanges are standardized to facilitate installation, maintenance, and compatibility across equipment.

组件规格

定义
The Inlet/Outlet Flange is a critical mounting component in exhaust fan and blower systems, designed as a flat, circular, or rectangular plate with precisely drilled bolt holes and a central opening. It serves as the interface between the fan housing and external ductwork, providing structural support, alignment, and sealing through gaskets. Engineered to withstand operational pressures, vibrations, and thermal expansion, it ensures efficient airflow transfer while preventing leaks, backflow, or detachment. Common in industrial ventilation, HVAC, and process systems, flanges are standardized to facilitate installation, maintenance, and compatibility across equipment.
工作原理
The flange operates by creating a bolted, gasket-sealed joint between the fan housing and ductwork. When bolts are tightened through aligned holes, compressive force is applied, pressing the gasket between flange faces to form a leak-proof seal. This rigid connection maintains structural integrity under dynamic loads (e.g., pressure fluctuations, vibrations), while the central opening allows unimpeded airflow. Standardized dimensions ensure proper alignment and load distribution, preventing misalignment or stress concentrations that could compromise performance.
材料
Typically made from carbon steel (e.g.ASTM A36A105)stainless steel (e.g.304/316 for corrosion resistance)or aluminum (for lightweight applications). Gaskets are often rubbersiliconeor PTFE. Surface finishes may include galvanization or powder coating for durability.
Pressure Rating
PN10 to PN40 (or Class 150 to 300)
Flange Thickness
10mm to 30mm
Sealing Face Type
Raised face (RF), flat face (FF), or ring-type joint (RTJ)
Temperature Range
-20°C to 400°C (varies by material)
Bolt Hole Quantity
4 to 16 holes (depending on size)
Bolt Circle Diameter
Standardized per flange size (e.g., 100mm to 500mm)
标准
ISO 7005-1DIN 2501ANSI/ASME B16.5EN 1092-1

行业分类与别名

进出口法兰 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 or uneven tightening->Gasket compression failure leading to air leaks->Use calibrated torque wrenches and follow cross-tightening patterns; inspect gaskets regularly.
Material corrosion from exposure to moisture or chemicals->Flange degradation, holes, or structural weakness->Select corrosion-resistant materials (e.g., stainless steel); apply protective coatings; implement routine inspections.

工业生态与工程逻辑

0
Leakage due to improper gasket installation
1
Bolt fatigue from vibration
2
Corrosion in humid or chemical environments
3
Misalignment causing airflow restriction

合规与检测

tolerance
Bolt hole alignment within ±0.5mm; flange flatness within 0.1mm per 100mm diameter; surface finish Ra ≤ 3.2 μm for sealing faces.
test method
Pressure testing per ISO 5208 (e.g., hydrostatic or pneumatic tests), visual inspection for defects, dimensional checks with calipers/gauges, and torque verification of bolts.

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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 difference between an inlet and outlet flange?

Inlet flanges connect to the suction side of the fan (air intake), while outlet flanges connect to the discharge side (air exhaust). They are often identical in design but must be oriented correctly to match airflow direction and system layout.

How do I select the right flange for my exhaust fan?

Match the flange to the fan's port size, pressure rating, and material compatibility. Consider operational temperature, medium (e.g., corrosive gases), and standards (e.g., ISO, DIN). Always use appropriate gaskets and bolts per manufacturer specifications.

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CNFX Industrial Component Index · 机械和设备制造

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URN:CNFX:ME:UNIT:INLET_OUTLET_FLANGE