行业组件数据 · 2026

法兰体

A forged steel flange body is a robust, ring-shaped component used to connect pipes, valves, pumps, and other equipment in high-pressure industrial piping systems.

技术定义与适配语境
典型 法兰体 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 flange body is the primary structural element of a forged steel flange, designed to provide a secure, leak-proof connection between piping components. It features a flat, machined face for gasket sealing, bolt holes for assembly, and a central bore matching the pipe diameter. Manufactured through hot forging processes, it exhibits superior mechanical properties including high strength, toughness, and resistance to fatigue and impact, making it suitable for critical applications in petrochemical, power generation, and heavy industrial systems.

组件规格

定义
The flange body is the primary structural element of a forged steel flange, designed to provide a secure, leak-proof connection between piping components. It features a flat, machined face for gasket sealing, bolt holes for assembly, and a central bore matching the pipe diameter. Manufactured through hot forging processes, it exhibits superior mechanical properties including high strength, toughness, and resistance to fatigue and impact, making it suitable for critical applications in petrochemical, power generation, and heavy industrial systems.
工作原理
The flange body works by creating a bolted, gasketed joint between two piping components. When bolts are tightened through the flange's holes, compressive force is applied, squeezing the gasket between the mating faces to form a pressure-tight seal. The forged steel construction ensures the body withstands internal fluid pressure, external loads, and thermal expansion without deformation, maintaining joint integrity under operational stresses.
材料
ASTM A105 (Carbon Steel)ASTM A182 F304/F316 (Stainless Steel)ASTM A350 LF2 (Low-Temperature Carbon Steel)with optional coatings like galvanizing or epoxy for corrosion protection.
Face Type
Raised Face (RF), Flat Face (FF), Ring-Type Joint (RTJ)
Size Range
1/2 inch to 24 inches NPS
Surface Finish
125 to 250 microinches for gasket seating
Pressure Rating
Class 150 to Class 2500
Temperature Range
-29°C to 538°C depending on material grade
Bolt Hole Quantity
4 to 48 holes
Bolt Circle Diameter
As per ASME B16.5 standards
标准
ASME B16.5ASME B16.47ISO 7005-1DIN 2633

行业分类与别名

法兰体 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

Insufficient bolt torque or uneven tightening->Gasket compression loss leading to leakage->Use calibrated torque wrenches and follow cross-tightening patterns as per ASME PCC-1 guidelines.
Exposure to corrosive fluids without protective coatings->Material degradation and pitting, reducing pressure integrity->Select corrosion-resistant materials (e.g., stainless steel) or apply protective coatings; implement regular inspection schedules.
Thermal cycling causing expansion/contraction stresses->Fatigue cracking at bolt holes or weld necks->Design with adequate flexibility in piping layout; use expansion joints; ensure proper material selection for temperature range.

工业生态与工程逻辑

0
Leakage due to improper gasket seating or bolt torque
1
Corrosion in aggressive chemical environments
2
Fatigue failure from cyclic pressure or thermal stresses
3
Misalignment causing uneven load distribution

合规与检测

tolerance
Bolt hole diameter ±0.8 mm, bolt circle diameter ±1.6 mm, face flatness within 0.05 mm per ASME B16.5
test method
Hydrostatic pressure testing at 1.5 times rated pressure for 10 minutes; non-destructive testing (NDT) such as ultrasonic or magnetic particle inspection for critical applications.

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 advantage of a forged steel flange body over a cast one?

Forged steel flange bodies offer superior strength, ductility, and resistance to impact and fatigue compared to cast flanges, making them ideal for high-pressure, high-temperature, and critical service applications.

How do I select the correct pressure class for a flange body?

Select based on the maximum operating pressure and temperature of your system, referencing ASME B16.5 standards. Common classes include 150, 300, 600, 900, 1500, and 2500, with higher numbers indicating greater pressure capacity.

Can flange bodies be used with different pipe materials?

Yes, but material compatibility must be considered to avoid galvanic corrosion. For example, a carbon steel flange body can connect to stainless steel pipes using appropriate gaskets and bolts, but insulation kits may be needed in corrosive environments.

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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_BODY