行业组件数据 · 2026

穹顶法兰

A specialized flange designed for dome-shaped pressure vessels and tanks to provide secure sealing and structural connection.

技术定义与适配语境
典型 穹顶法兰 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。

A dome flange is a precision-engineered circular component with bolt holes and a sealing surface, specifically contoured to match the curvature of dome-shaped structures in pressure vessels, storage tanks, and reactors. It serves as the interface between the dome and connecting pipes or equipment, ensuring pressure integrity and structural stability under operational loads.

组件规格

定义
A dome flange is a precision-engineered circular component with bolt holes and a sealing surface, specifically contoured to match the curvature of dome-shaped structures in pressure vessels, storage tanks, and reactors. It serves as the interface between the dome and connecting pipes or equipment, ensuring pressure integrity and structural stability under operational loads.
工作原理
The dome flange operates by creating a bolted, gasketed joint that distributes mechanical loads evenly across the dome's curved surface. When tightened, bolts compress a gasket between mating surfaces, forming a pressure-tight seal that prevents leakage of contents (liquids, gases, or vapors) while withstanding internal pressure, thermal expansion, and external forces.
材料
Typically manufactured from carbon steel (ASTM A105)stainless steel (ASTM A182 F304/F316)or alloy steel (ASTM A182 F11/F22). Materials are selected based on corrosion resistancetemperatureand pressure requirements. Surface finish: Ra ≤ 3.2 μm for sealing surfaces.
Sealing Type
Raised face (RF) or ring-type joint (RTJ)
Pressure Rating
PN10 to PN100 (or Class 150 to Class 600)
Flange Thickness
10-50 mm depending on pressure class
Temperature Range
-20°C to +400°C
Bolt Circle Diameter
Customized to dome curvature
标准
ISO 7005-1ASME B16.5DIN 2633

行业分类与别名

穹顶法兰 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 gasket selection or installation->Leakage of hazardous fluids->Use compatible gasket materials and follow torque specifications; implement regular inspection schedules.
Thermal stress from temperature fluctuations->Flange warping or bolt loosening->Design with thermal expansion allowances; use high-temperature bolts and periodic retorquing procedures.

工业生态与工程逻辑

0
Improper bolt tightening can cause leakage
1
Material corrosion in aggressive environments
2
Thermal cycling may lead to fatigue cracking

合规与检测

tolerance
Bolt hole diameter: ±0.5 mm; Flange thickness: ±1 mm; Flatness: ≤0.1 mm per 100 mm diameter
test method
Hydrostatic pressure testing per ASME BPVC Section VIII; Helium leak testing for critical applications; Dye penetrant inspection for surface defects.

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

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 main difference between a dome flange and a standard flat flange?

A dome flange is curved to match the geometry of dome-shaped structures, ensuring uniform load distribution and preventing stress concentrations, whereas flat flanges are designed for cylindrical or flat surfaces.

Can dome flanges be used in high-temperature applications?

Yes, when made from appropriate materials like stainless steel or alloy steels, dome flanges can operate in temperatures up to 400°C, depending on the gasket material and design pressure.

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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
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

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URN:CNFX:ME:UNIT:DOME_FLANGE