AComprehensive Guide to 10 Most Used Pipe Flanges: Their Features, Uses, and Advantages in
Piping
10 种最常用的管道法兰的综合指南:它们在管道中的特征、用途和优势
Piping flanges are key elements of apiping system and are used in various industries, such as oil
and gas, petrochemical, manufacturing, etc. These flanges connect pipes to valves or equipment
or with another pipe spool and form atight seal that prevents leaks and ensures efficient fluid
flow within the system.
管道法兰是管道系统的关键元件 ,用于各种行业 ,如石油和天然气 、石化 、制造业等 。这些
法兰将管道连接到阀门或设备或与另一个管线轴连接 ,并形成紧密的密封 ,防止泄漏并确保
系统内的高效流体流动。
Several types of piping flanges are available, each with unique features and benefits. You must
understand the differences between these flanges to choose the right one for aparticular
application. In this article, Ihave listed the different types of piping flanges, their function, and
applications in various piping systems. The following types of flanges are covered.
有几种类型的管道法兰可供选择 ,每种都有独特的功能和优点 。您必须了解这些法兰之间的
差异 ,才能为特定应用选择合适的法兰 。在本文中 ,我列出了不同类型的管道法兰 、它们的
功能和在各种管道系统中的应用。涵盖以下类型的法兰。
Table of Contents 目录
Threaded Flanges 螺纹法兰
Socket-Weld Flanges 承插焊法兰
Slip-On Flanges
滑入式法兰
Lap Joint Flanges
搭接法兰
Weld Neck Flanges
焊接颈法兰
Blind Flanges 盲法兰
Reducing Flange 减速法兰
Expander Flange 膨胀法兰
Flangeolet /Weldoflange /Nippoflange
法兰 /焊接法兰 /尼波法兰
Flange Types Based on Faces Type
基于面类型的法兰类型
Marking on the Flange Body
法兰主体上的标记
The pipe flanges are the second most used joining method after welding. They are used when
joints need dismantling. It provides flexibility for maintenance. Flange Connects the pipe with
various equipment and valves. Breakup flanges are added to the pipeline system if regular
maintenance isrequired during plant operation.
管道法兰是仅次于焊接的第二大最常用的连接方法 。当接头需要拆卸时 ,它们使用 。它提供
了维护的灵活性。法兰 将管道与各种设备和阀门连接起来。如果在工厂运行期间需要定期
维护,则会在管道系统中添加分离法兰。
Aflanged joint comprises three components; flanges, gaskets, and bolting, and isassembled by a
pipefitter. Special controls are required to select and apply all these elements to attain ajoint
with acceptable leak tightness.
法兰接头由三个部件组成 ;法兰、垫圈和螺栓连接,由管道装配工组装。需要特殊的控制来
选择和应用所有这些元件,以获得具有可接受的密封性的接头。
Related Questions 相关问题
Q- What ’sin aflange?
Q- 法兰里有什么?
A- Flange is atype of piping component that is used to join pipe to pipe, or other piping
components and equipment/ Flange consists of three components: metallic flange, which is
welded or bolted with pipe or other equipment. The second isagasket that seats between two
flanges, and the third isthe bolting material that keeps the connecting flanges together to create
asecure and leak-proof connection.
A-法兰是一种管道组件 ,用于连接管道到管道或其他管道组件和设备 /法兰由三个组件组成 :
金属法兰 ,与管道或其他设备焊接或螺栓连接 。第二个是位于两个法兰之间的垫圈 ,第三个
是将连接法兰固定在一起以形成安全防漏连接的螺栓材料。
Q- What isaflange used for?
Q- 法兰有什么用?
A-Flanges are commonly used in piping systems, allowing for easy disassembly and maintenance
of the system. They are also used in industrial equipment such as pumps, valves, and static
equipment to connect them with piping systems.
A型法兰通常用于管道系统 ,便于拆卸和维护系统 。它们还用于工业设备 ,如泵 、阀门和静
态设备,以将它们与管道系统连接起来。
Q- What are flange types?
Q- 什么是法兰类型?
A- Depending on the application and the requirements of the piping system or equipment,
several types of flanges are used in piping. Such as weld neck, threaded, socket, etc.; refer to this
article to learn about 10 main types.
A-根据应用和管道系统或设备的要求 ,管道中使用了几种类型的法兰 。如焊颈 、螺纹 、承插
等 ;请参阅本文以了解 10 种主要类型。
Q-What are the 3most common flange types?
Q- 最常见的 3种法兰类型是什么?
A- Weldneck, Socket weld and Threaded are the most commonly used types of flanges in piping
systems.
A-焊颈焊、承插焊和螺纹焊是管道系统中最常用的法兰类型。
Q- What are the examples of flanges?
Q- 法兰的例子有哪些?
A- Weld neck, slip-on, socket weld, threaded, blind flange, and lap joint type flanges are some of
the commonly used flnages.
A-焊颈,滑入式,承插焊,螺纹,盲法兰和搭接式法兰是一些常用的法兰。
However, using aflange connection in underground piping isnot advisable when itissupposed to
be buried. The flange isalso the most common source of leaks and fires in aprocess plant. There
are avariety of flanges available to suit the requirements. Aflange can be classified in several
alternate ways based on the following:
但是 ,当应该埋入地下管道时 ,不建议在地下管道中使用法兰连接 。法兰也是加工厂中最常
见的泄漏和火灾来源 。有多种法兰可供选择 ,以满足要求 。法兰可以根据以下几种替代方式
进行分类:
Types of Connection 连接类型
Flange facing Types 法兰端面类型
Pressure-Temperature Ratings
压力 -温度额定值
Material Types 材料类型
Threaded Flanges 螺纹法兰
Athreaded Flange isalso known as ascrewed flange, and ithas athread inside the flange bore,
which fits on the pipe with amatching male thread on the pipe. This type of joint connection is
speedy and simple but unsuitable for high pressure and temperature applications. Threaded
Flanges are mostly used in utility services such as air and water.
螺纹法兰也称为螺纹法兰 ,它在法兰孔内有一个螺纹 ,该螺纹与管道上的匹配外螺纹配合在
管道上 。这种类型的接头连接快速简单 ,但不适合高压和高温应用 。螺纹法兰主要用于空气
和水等公用事业服务。
Threaded Flange ismostly used in utility services such as air and water
螺纹法兰主要用于空气和水等公用事业服务
Itisnot suitable for high presser and temperature applications
它不适用于高压和高温应用
Itisalso available in limited Size of NPS 4”and below
它也提供有限尺寸的 NPS 4“及以下
Threaded Flanges can be FF or RF
螺纹法兰可以是 FF 或 RF 法兰
Itisalow-cost flange.
它是一种低成本的法兰。
Threaded Flange 螺纹法兰
Related Questions 相关问题
Q- What isathreaded flange?
Q- 什么是螺纹法兰?
A- Athreaded flange isatype of flange that has threads on the inside bore, which allow itto be
screwed onto apipe or fitting.
A-螺纹法兰是一种在内孔上有螺纹的法兰,可以将其拧到管道或配件上。
Q- Where isthreaded flange used?
Q- 螺纹法兰在哪里使用?
A- Threaded flanges are commonly used in low-pressure applications where frequent
disassembly may be required, such as plumbing, HVAC, and water treatment.
A-螺纹法兰通常用于可能需要频繁拆卸的低压应用,例如管道, HVAC 和水处理。
Socket-Weld Flanges 承插焊法兰
Socket-Weld Flanges have afemale socket in which the pipe isfitted. Fillet welding isdone from
outside on the pipe. Generally, itisused in small bore piping and isonly suitable for low pressure
and temperature application.
承插焊法兰有一个内螺纹插座 ,管道安装在其中 。角焊是从管道外部完成的 。通常 ,它用于
小口径管道,仅适用于低压和低温应用。
Socket-Welded Flanges can be FF or RF.
承插焊接法兰可以是 FF 或 RF 。
The cost of flange and fabrication ismoderate.
法兰和制造成本适中。
Socket Weld Flange 承插焊法兰
socket weld flange cross-section with weld detail
承插焊法兰横截面与焊缝细节
Related Questions 相关问题
Q- What isasocket weld flange?
Q- 什么是承插焊法兰?
A- Asocket weld flange isatype of flange with asocket or bore designed to fit over the end of a
pipe and isthen welded on the pipe, as shown in the image above.
A-承插焊法兰是一种带有承插或孔的法兰,设计用于安装在管道末端,然后焊接在管道上 ,
如上图所示。
Q- What isthe socket flange used for?
Q- 承插法兰的用途是什么?
A- The socket weld flange iscommonly used in smaller size piping systems with low temperature
and pressure applications.
A-承插焊法兰通常用于具有低温和低压应用的较小尺寸管道系统。
Q- What isthe difference between socket weld flange and slip on flange?
Q- 承插焊法兰和法兰滑动有什么区别?
A- The main difference between asocket weld flange and aslip-on flange is the installation
method. Socket weld flange require welding only on the outside of the joint as shown in the
image above. Whereas, Slip on flange require welding on both the inside and outside of the joint
as shown in the image below.
A-承插焊法兰和滑入式法兰之间的主要区别在于安装方法 。如上图所示 ,承插焊法兰只需要
在接头的外部进行焊接 。然而 ,法兰上的滑动需要在接头的内部和外部进行焊接 ,如下图所
示。
Q- What isthe difference between asocket weld and aButtweld flange (Weld neck flange)?
Q- 承插焊和对焊法兰(焊颈法兰)有什么区别?
A- Asocket weld flange and abutt weld flange are two different types of flanges that are used for
different purposes.
A-承插焊法兰和对焊法兰是两种不同类型的法兰,用于不同的目的。
Asocket weld flange isatype of flange with asocket or bore designed to fit over the end of a
pipe, and isthen welded outside of the pipe with fillet-type welding. The socket weld flange is
typically used in smaller size and Low-pressure temperature piping systems.
承插焊法兰是一种带有承插或孔的法兰 ,设计用于安装在管道末端 ,然后通过圆角式焊接在
管道外部。承插焊法兰通常用于较小尺寸和低压温度管道系统。
On the other hand, butt weld flange isatype of flange that isdesigned to be welded directly to
the beveled end of the pipe, and itisused for high-pressure temperature applications in oil and
gas, chemical processing, and power generation.
另一方面 ,对焊法兰是一种设计为直接焊接到管道斜端的法兰 ,用于石油和天然气 、化学加
工和发电中的高压温度应用。
Slip-On Flanges 滑入式法兰
Slip-On flange has ahole with amatching outside diameter of pipe from which pipe can pass. The
flange isplaced on pipe and fillet welded from both inside and outside. Slip-On Flange issuitable
for low pressure and temperature application.
滑入式法兰有一个孔 ,其外径与管道的外径相匹配 ,管道可以从该孔通过 。法兰放置在从内
部和外部焊接的管道和圆角上。滑入式法兰适用于低压和低温应用。
This type of flange isavailable in large sizes also.
这种类型的法兰也有大尺寸可供选择。
Itcan be FF or RF
它可以是 FF 或 RF 。
The cost of flange and fabrication ismoderate.
法兰和制造成本适中。
Slipon Flange 滑移法兰
Slipon raised face (SORF) flange cross-section with
weld detail
滑动凸面 ( SORF ) 法兰横截面,带焊接细节
Related Questions 相关问题
Q- What isslip on flanges?
Q- 什么是法兰上的滑动?
A- Aslip-on flange isatype of flange that isdesigned to slip over the end of apipe or fitting and
then be welded both inside and outside, as shown in the image above. Slip-on flanges have a
slightly larger diameter than the pipe or fitting to which they are attached, allowing them to slip
over the end of the pipe or fitting.
A-滑入式法兰是一种法兰,设计用于滑过管道或配件的末端,然后在内部和外部进行焊接 ,
如上图所示 。滑入式法兰的直径略大于其所连接的管道或管件 ,允许它们滑过管道或管接头
的末端。
Q- What isthe difference between slip on and weld neck flange?
Q- 滑入法兰和焊颈法兰有什么区别?
A- The main difference between slip on and weld neck flange ishow they are welded with the
pipe. Slip on flange isfillet welded, whereas weld neck flange isbutt welded with pipe. Slip-on
flanges are commonly used in low-pressure applications where the welded joint isnot subject to
high stresses. Weld neck flanges are commonly used in high-pressure and high-temperature
applications, where the joint issubject to high stresses.
A-滑入式法兰和焊颈法兰之间的主要区别在于它们如何与管道焊接 。法兰上的滑动是角焊的,
而焊颈法兰是用管道对焊的 。滑入式法兰通常用于焊接接头不会承受高应力的低压应用 。 焊
颈法兰通常用于高压和高温应用,其中接头承受高应力。
Lap Joint Flanges 搭接法兰
The lap flange has two components: astub end and aloose backing flange. The stub end is
butt-welded to the pipe, and the backing flange freely moves over the pipe. The backing flange
can be of adifferent material than stub material and normally of carbon steel to save the cost. A
lap flange isused where frequent dismantling isrequired, and space isconstrained.
搭接法兰有两个组件 :短端和松散的背衬法兰 。短端对焊到管道上 ,背衬法兰在管道上自由
移动 。背衬法兰可以采用与短截材料不同的材料 ,通常为碳钢 ,以节省成本 。搭接法兰用于
需要频繁拆卸且空间受限的情况。
The backing flange can be of adifferent material than stub material and normally of carbon steel
to save the cost.
背衬法兰可以采用与短截材料不同的材料,通常为碳钢,以节省成本。
This flange provides better joining due to butt-weld as compared to socket and threaded type
flanges.
与承插式和螺纹型法兰相比,该法兰通过对焊提供更好的连接。
Not suitable for small size, Costly components, and fabrication as compared to threaded, slip-on,
and socket flange.
与螺纹、滑入式和承插式法兰相比,不适合小尺寸、昂贵的组件和制造。
The lap flange provides connection flexibility as you can freely rotate the flange on the pipe. Itis
used where frequent dismantling isrequired and space isconstrained.
搭接法兰提供了连接灵活性 ,因为您可以自由旋转管道上的法兰 。它用于需要频繁拆卸和空
间受限的地方。
Lap Flange with stub and hub
带短杆和轮毂的搭接法兰
Lap Flange cross-section with weld detail
搭接法兰横截面,带焊接细节
Related Questions 相关问题
Q- What islap joint flange?
Q- 什么是搭接法兰?
A- Alap joint flange comprises two main parts: astub end and aloose backing flange. The stub
end is welded directly to the pipe, while the backing flange slides over the pipe and is not
attached to it. The backing flange can be made of adifferent material than the stub end, and is
often made of lower cost carbon steel.
A- 搭接法兰由两个主要部分组成:短端和松散的支撑法兰。短端直接焊接在管道上,而背
衬法兰在管道上滑动 ,不连接到管道上 。背衬法兰可以由与短端不同的材料制成 ,并且通常
由成本较低的碳钢制成。
Lap joint flanges are particularly useful in situations where the piping system needs to be
frequently dismantled and reassembled. This isbecause the backing flange can be easily removed
and reattached without removing the entire flange assembly. It is also used in piping systems
where space islimited and acompact flange design isrequired.
搭接法兰在管道系统需要频繁拆卸和重新组装的情况下特别有用 。这是因为无需拆卸整个法
兰组件即可轻松拆卸和重新连接支撑法兰 。它还用于空间有限且需要紧凑法兰设计的管道系
统。
Q- What isthe difference between lap joint flange and slip on flange?
Q- 搭接法兰和法兰滑动有什么区别?
A- Lap flange consists of two parts: stub end and backing flange. In alap joint flange, stub end is
directly welded to the pipe by butt welding, while aslip-on flange iswelded on the pipe by afillet
weld from inside and outside.
A-搭接法兰由两部分组成 :短端和背衬法兰 。在搭接法兰中 ,短端通过对焊直接焊接到管道
上,而滑入式法兰则通过内侧和外的角焊焊接在管道上。
Q- What are two advantages of alap joint flange?
Q- 搭接法兰的两个优点是什么?
A- The main two advantages of using alap joint flange are listed below.
A-下面列出了使用搭接法兰的两个主要优点。
Easy disassembly and maintenance: One advantage of lap joint flanges isthat they are easy to
dismantle and reassemble when maintenance or fast joining isrequired. The loose backing flange
can be easily aligned with another flange, allowing the piping system to be easily disassembled
and reassembled.
易于拆卸和维护 :搭接法兰的一个优点是 ,当需要维护或快速连接时 ,它们易于拆卸和重新
组装。松散的背衬法兰可以很容易地与另一个法兰对齐,使管道系统易于拆卸和重新组装 。
Flexibility in material selection: Another advantage of lap joint flanges is that they allow for
flexibility in material selection. The stub end can be made from adifferent material than the
backing flange, which can be beneficial in situations where the material properties of the two
components need to be different. For example, astub end can be made of acorrosion-resistant
material, with the backing flange made from acheaper material, as itwill never come in contact
with afluid.
材料选择的灵活性 :搭接法兰的另一个优点是它们允许灵活选择材料 。短端可以由与背衬法
兰不同的材料制成 ,这在两个组件的材料特性需要不同的情况下可能是有益的 。例如 ,短端
可以由耐腐蚀材料制成,而背衬法兰由更便宜的材料制成,因为它永远不会与流体接触。
Weld Neck Flanges 焊接颈法兰
Weld neck flange isthe most widely used type in process piping. Itgives the highest level of joint
integrity as itisbutt-welded with apipe. These types of flanges are used in high pressure and
temperature application. Weld neck flanges are Bulky & costly with respect to other types of
flanges.
焊颈法兰是工艺管道中使用最广泛的类型 。它提供了最高水平的接头完整性 ,因为它是用管
道对焊的 。这些类型的法兰用于高压和高温应用 。与其他类型的法兰相比 ,焊颈法兰体积庞
大且昂贵。
High skill isrequired for fabrication.
制造需要高技能。
Required more space to accommodate in the piping system due to the long hub
由于轮毂较长,需要更多空间来容纳管道系统
Weld Neck Flange isavailable in all sizes &itcan be FF, RF, or RTJ type
焊颈法兰有各种尺寸可供选择,可以是 FF, RF 或 RTJ 型
You can see the Weld Neck flange welded with pipe
您可以看到焊颈法兰与管道焊接
Related Questions 相关问题
Q- What isthe purpose of aweld neck flange?
Q- 焊颈法兰的用途是什么?
A- The purpose of aweld neck flange isto provide astrong and secure connection between two
joints (Pipe to pipe or pipes to valve, equipment, etc.). Ithas along tapered neck (which iscalled
ahub) that is welded that provides asmooth transition of the flow. Weld neck flanges are
commonly used in high-pressure and high-temperature applications.
A-焊颈法兰的目的是在两个接头 ( 管道到管道或管道到阀门 ,设备等 )之间提供牢固而牢固
的连接 。它有一个长锥形颈部 ( 称为轮毂 ),焊接后可提供流动的平稳过渡 。焊颈法兰通常
用于高压和高温应用。
Q- What isthe standard weld neck flange?
Q- 什么是标准焊颈法兰?
A- Flanges manufactured following the standards such as ASME B16.5, ASME B16.47, DIN, or
other similar are called standard weld neck flanges.
A-按照 ASME B16.5 , ASME B16.47 , DIN 或其他类似标准制造的法兰称为标准焊颈法兰。
Q–What are the parts of aweld neck flange?
Q– 焊颈法兰的部件有哪些?
A–Weld neck flange typically consists of three main parts:
A– 焊颈法兰通常由三个主要部分组成:
Flange body: This isthe main part of the flange that connects to other flanges. Ithas acircular
shape with bolt holes around the perimeter for attaching the flange.
法兰体 :这是法兰与其他法兰连接的主要部分 。它具有圆形 ,周边有螺栓孔 ,用于连接法兰 。
Tapered neck or hub: This flange portion iswelded to the piping components or equipment. The
tapered neck or hub extends from the flange body and gradually narrows down to the diameter
of the pipe.
锥形颈部或轮毂 :此法兰部分焊接到管道组件或设备上 。锥形颈部或轮毂从法兰体延伸并逐
渐变窄至管道直径。
Flange face: This isthe surface of the flange that comes into contact with the gasket. Depending
on the requirements, the flange face may be raised, RTJ, or flat.
法兰面:这是法兰与垫圈接触的表面。根据要求,法兰面可以凸起、 RTJ 或平坦。
Q- What are the different types of weld flanges?
Q- 焊接法兰有哪些不同类型?
A–Depending on the flange face, itcan be aflat face, raised face, or RTJ type. Refer to the Flange
Face section for more information.
A– 根据法兰面的不同,它可以是平面、凸面或 RTJ 类型。有关详细信息,请参阅法兰面
部分。
Blind Flanges 盲法兰
The blind flange is ablank disc with abolt hole. These flanges are used with another type of
flange to isolate the piping system or terminate the piping as an end. Blind flanges are also used
as amanhole cover in the vessel.
盲法兰是一个带有螺栓孔的空白盘 。这些法兰与另一种类型的法兰一起使用 ,以隔离管道系
统或端接管道作为末端。盲法兰也用作容器中的井盖。
Related Questions 相关问题
Q-What isablind flange?
Q- 什么是盲法兰?
A- Blind flange isatype of flange that isused to close off the end of apipe or vessel. Itiscalled a
“blind ”flange because ithas no opening for fluid or gas to flow.
A-盲法兰是一种用于关闭管道或容器末端的法兰 。它被称为 “盲 ”法兰 ,因为它没有流体或气
体流动的开口。
Q- Why use ablind flange?
Q- 为什么使用盲法兰?
A- Blind flanges are commonly used in piping systems where future connections may be needed
or where the end of the line needs to be sealed off. They are also used in equipment to close off
nozzle openings when not in use.
A-盲法兰通常用于管道系统中 ,其中可能需要将来的连接或需要密封管线末端的地方 。它们
还用于设备中,以便在不使用时关闭喷嘴开口。
Q- How many types of blind flanges are there?
Q- 盲法兰有多少种类型?
A- Blind Flabges are available in mainly three face types. Flat face, raised face, or RTJ type.
A-盲襟主要有三种面部类型。平面、凸起面或 RTJ 型。
Q- What isthe difference between aBlind flange and aBlank flange or Blind?
Q- 盲法兰和空白法兰或盲法兰有什么区别?
A- The terms “blind flange ”and “blank flange ”are sometimes used interchangeably, but they can
refer to different types of flanges depending on the context.
A-术语 “盲法兰 ”和 “空白法兰 ”有时可以互换使用 , 但它们可以根据上下文指不同类型的法兰。
As said earlier, ablind flange isatype of flange that isused to close off the end of apipe or vessel
nozzle. On the other hand, ablank (or itiscalled ablank flange by some) isused to isolate part of
the piping system for short-term maintenance activities. Refer to the image given here for easy
understanding.
如前所述 ,盲法兰是一种用于关闭管道或容器喷嘴末端的法兰 。另一方面 ,坯料 ( 或被某些
人称为毛坯法兰 )用于隔离管道系统的一部分以进行短期维护活动 。请参阅此处给出的图像
以方便理解。
Reducing Flange 减速法兰
Areducing flange is used in place of astandard flange to allow for achange in pipe size. This
flange eliminates the need for astandard reducer in piping. The flange consists of one specified
diameter with asmaller diameter bore size.
使用减速法兰代替标准法兰 ,以允许改变管道尺寸 。该法兰消除了管道中对标准减速器的需
求。 法兰由一个指定直径和一个较小直径的孔径组成。
Except for the bore and hub dimensions, areducing flange has dimensions of the standard pipe
flange size and isconsidered economical to make apipe size transition.
除孔和轮毂尺寸外 ,减速法兰的尺寸为标准管道法兰尺寸 ,并且认为进行管道尺寸转换是经
济的。
These flanges are available in weld neck, slip-on, and threaded end types. Reducing flanges are
an economical way to make transitions between pipes of different sizes, however, due to
high-pressure loss, they are rarely used in piping. ASME B16.5 covers the dimensions of reducing
flanges.
这些法兰有焊颈 、滑入式和螺纹端型 。减少法兰是在不同尺寸的管道之间进行过渡的经济方
法,但是,由于高压损失,它们很少用于管道。 ASME B16.5 涵盖了减速法兰的尺寸。
Image source: www.msmmfg.com
图片来源: www.msmmfg.com
Related Questions 相关问题
Q- What isreducing flange?
Q- 什么是减径法兰?
A- Reducing flange isatype of flange that isdesigned to connect pipes or fittings of different sizes.
Itissimilar in design to aregular flange but has asmaller diameter on connecting end, as shown
in the image above.
A-减速法兰是一种法兰,设计用于连接不同尺寸的管道或配件。它的设计类似于常规法兰 ,
但连接端的直径较小,如上图所示。
Expander Flange 膨胀法兰
Itissimilar to aweld neck flange but increases the size of the pipe to the first or second larger
size. Itisan alternative to using areducer and weld neck flange. Useful for connecting to valves,
compressors, and pumps.
它类似于焊颈法兰 ,但将管道的尺寸增加到第一个或第二个较大的尺寸 。它是使用减速器和
焊颈法兰的替代方案。可用于连接阀门、压缩机和泵。
These flanges are specially designed. Dimensions of the weld neck are in line with the connecting
pipe, other dimensions are in accord with standard ASME B16.5 flanges.
这些法兰是专门设计的。焊颈尺寸与连接管一致,其他尺寸符合标准 ASME B16.5 法兰。
Expander flange 膨胀法兰
Flangeolet /Weldoflange /Nippoflange
法兰 /焊接法兰 /尼波法兰
Flangeolet isacombination of two olets (mainly weldolet or nipple) and aflange as you can see
in the image that the hub length islonger, like along neck weld flange. Itisa90 Degree branch
connection used for high-pressure piping.
法兰是两个焊盘 ( 主要是焊缝或阳接头 )和一个法兰的组合 ,如图所示 ,轮毂长度更长 ,就
像长颈焊法兰一样。它是用于高压管道的 90 度分支连接。
Itreduces the two weld joints more than the traditional Olet +Pipe +Flange connection and one
weld joint in the case of the Olet +Flange connection. You can see the image of the flangeolet
branch.
与传统的 Olet +Pipe +Flange 连接相比,它减少了两个焊接接头,在 Olet +Flange 连接的情
况下减少了一个焊接接头。您可以看到法兰分支的图像。
Flange Types Based on Faces Type
基于面类型的法兰类型
Depending on the flange facing Types, itcan be further classified as
根据法兰面类型,可以进一步分类为
Flat Face (FF) 平面 ( FF)
Raised Face (RF) 凸起的脸 (射频)
Ring Joint (RTJ) 环形接头
Tongue and groove (T&G)
榫槽( T&G )
And Male and Female type
和男性和女性类型
Types of Flange Faces 法兰面的类型
Flat Face 平面
As the name suggests, the flat face flange has aflat face. Flat face flanges are used when the
counter-flanges are flat faces. This condition occurs mainly in connection to Cast Iron equipment,
valves, and specialties. Afull-face gasket isused when aflat face flange isused.
顾名思义 ,平面法兰具有平面 。当反向法兰为平面时 ,使用平面法兰 。这种情况主要发生在
铸铁设备、阀门和专业领域。当使用平面法兰时,使用全面垫片。
Raised Face 抬起的脸
Raised face flange has asmall portion around the bore raised from the face. The gasket seat on
this raised face. The height of the raised face depends on the flange pressure-temperature rating,
known as aflange class. For 150# &300# height of the raised face is1/16 ”,and above 300#, itis
1/4 ”.The inside bore circle type of gasket isused with araised face flange.
凸面法兰在从面凸起的孔周围有一小部分 。这个凸起的脸上的垫圈座 。凸面的高度取决于法
兰压力 -温度额定值 , 称为法兰等级 。 对于 150# 和 300# 的凸面高度为 1/16 “, 高于 300# , 则
为 1/4 ”。内孔圆型垫片与凸面法兰一起使用。
RTJ Face RTJ 面部
Ring joint type face flange has aspecially designed grove in which metal gasket seats. This type of
flange isused in high pressure and temperature services.
环形接头式端面法兰有一个专门设计的凹槽 ,其中有金属垫圈座 。这种类型的法兰用于高压
和高温服务。
RTJ, Raised and flat face
RTJ , 凸起和平坦的表面
Related Questions 相关问题
Q- What isthe difference between RF and FF?
问:射频和 FF 有什么区别?
A- RF israised face, and FF isFlate Face. The main difference between RF and FF flanges isthe
shape of the sealing surface, as shown in the image above. RF flanges have araised face, while FF
flanges have aflat face.
A-RF 是凸面, FF 是 Flate Face 。 RF 和 FF 法兰之间的主要区别在于密封面的形状,如上图所
示。射频法兰具有凸起的面,而 FF 法兰具有平坦的面。
Q- What does RF and FF mean in flange?
Q- 法兰中的射频和 FF 是什么意思?
A- RF means “Raised Face ”and FF means “Flat Face ”
A-RF 表示 “凸起的脸 ”, FF 表示 “平面 ”
Q-Can you mate /connect RF and FF flanges?
Q- 可以配接 /连接射频和 FF 法兰吗?
A- No, itisnot good practice to connect RF and FF flanges.
答:不,连接射频和 FF 法兰不是好的做法。
Q-What isdifference between RF and RTJ flanges?
Q- 射频法兰和 RTJ 法兰有什么区别?
A- RF and RTJ are two different types of flange faces, as shown in the image above. RTJ flange has
agrove on the face in which metallic ring gasket seats.
A-RF 和 RTJ 是两种不同类型的法兰面,如上图所示。 RTJ 法兰的表面有一个凹槽,金属环垫
圈位于其中。
Q-What does RTJ flange stand for?
Q-RTJ 法兰代表什么?
A- RTJ stands for Ring Type Joint Gasket flange.
A- RTJ 代表 环型接头垫片法兰。
Flange Materials 法兰材料
Flanges are welded to pipe and equipment nozzle. Accordingly, it is manufactured from the
following materials;
法兰焊接到管道和设备喷嘴上。因此,它由以下材料制成 ;
Carbon steel 碳钢
Low alloy steel 低合金钢
Stainless steel 不锈钢
Combination of Exotic materials (Stub) and other backing materials
特殊材料(短根)和其他背衬材料的组合
The list of materials used in manufacturing iscovered in ASME B16.5 &B16.47.
ASME B16.5 和 B16.47 涵盖了制造中使用的材料清单。
ASME B16.5 -Pipe Flanges and Flanged Fittings NPS ½” to 24 ”
ASME B16.5 -管道法兰和法兰配件 NPS 1/2 “至 24 ”
ASME B16.47 -Large Diameter Steel Flanges NPS 26 ”to 60 ”
ASME B16.47 -大直径钢法兰 NPS 26 “至 60 ”
Commonly used Forged material grads are
常用的锻造材料等级有
Carbon Steel: –ASTM A105, ASTM A350 LF1/2, ASTM A181
碳钢: –ASTM A105 , ASTM A350 LF1/2 , ASTM A181
Alloy Steel: –ASTM A182F1 /F2 /F5 /F7 /F9 /F11 /F12 /F22
合金钢: –ASTM A182F1 /F2 /F5 /F7 /F9 /F11 /F12 /F22
Stainless Steel: –ASTM A182F6 /F304 /F304L /F316 /F316L/ F321/F347/F348
不锈钢: –ASTM A182F6 /F304 /F304L /F316 /F316L/ F321/F347/F348
Related Questions 相关问题
Q- What isASME B16.5?
问:什么是 ASME B16.5 ?
A- ASME B16.5 isastandard for Pipe Flanges and Flanged Fittings for sizes NPS ½” to 24 ”.Don ’t
get confused between ASTM and ASME. These two are different standards. There is no ASTM
B16.5.
A- ASME B16.5 是尺寸为 NPS 1/2 “至 24 ”的管道法兰和法兰配件的标准。不要混淆 AST M
和 ASME 。这两个是不同的标准。没有 ASTM B16.5 。
Flange Inspection 法兰检测
Before dispatching from the manufacturer, each flange isinspected to ensure quality. During an
inspection, you have to check the following;
在从制造商发货之前 ,每个法兰都经过检查以确保质量 。在检查过程中 ,您必须检查以下内
容 ;
Outer &Inner Diameter of body
车身外径和内径
Bolt Circle &Bolt hole Diameter
螺栓圆和螺栓孔直径
Hub Diameter &thickness of weld end
轮毂直径和焊端厚度
Length of the Hub
轮毂长度
Straightness and alignment of the bolt hole
螺栓孔的直线度和对齐度
ASME B16.5 and B16.47 standards cover permissible tolerances for inspection.
ASME B16.5 和 B16.47 标准涵盖了允许的检查公差。
Flange Inspection 法兰检测
Marking on the Flange Body
法兰主体上的标记
Each piping component ismarked for proper identification. Marking of flanges must include the
following so that during fabrication and post-fabrication, itcan be easily traced;
每个管道组件都经过标记 ,以便正确识别 。法兰的标记必须包括以下内容 ,以便在制造和制
造后可以轻松追踪 ;
Manufacturer logo 制造商徽标
ASTM material code ASTM 材料代码
Material Grade 材料等级
Service rating (Pressure-temperature Class))
使用等级(压力 -温度等级))
Size 大小
Thickness (Schedule) 厚度(明细表)
Heat No 加热号
Special marking ifany QT (Quenched and tempered) or W (Repair by welding)
特殊标记,如果有 QT (淬火和回火)或 W(焊接修复)
Flange Marking 法兰标记