一些螺纹的表示方法

图上有好几种螺纹,但不知道之间的区别,请各位赐教:

1. GAZ 指的是什么螺纹?
2.BSP指英国标准螺纹,和NPT美国标准螺纹有什么区别?
3. GAZ 和NPT之间又有什么区别?
密封的形式是否还存在不同?

感谢楼上的,我把你的内容帖出来大家一起学习,不介意吧:

螺纹代号Thread Code

        一、英制螺纹（螺纹牙型角55度）Thread of British standard ( Thread pitch shape angle 55°)
        BSW－－－－英国标准惠氏螺纹（粗牙）British Standard Whitworth Thread ( Coarse )
        BSF－－－－英国标准惠氏螺纹（细牙）British Standard Whitworth Thread ( Fine )
        G－－－－直管螺纹（外螺纹分A、B两面级、丝锥分G、G－D）Straight pipe thread ( Outside )
              thread in AB: taps in G、G－D )
        R－－－－锥管外螺纹（旧代号ZG;KG）Outside paper pipe thread ( Old thread code ZG,KG )
        RC－－－－锥管内螺纹（旧代号ZG;KG）Inside taper pipe thread ( Old thread code ZG,KG )

        二、美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°
        UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC )
        UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )
        UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread
        UN－－－－－统一制不变螺距螺纹Unified thread
        UNS－－－－统一制特殊螺纹Unified Special thread
        NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old
                thread code Z,K )
        NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection
        NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose
        NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread
        NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread
        NGT－－－－气瓶用锥螺纹Special thread for gas cylinder

        三、米制螺纹Metric thread
        ZM－－－－－米制锥管螺纹 Metric taper pipe thread
      
四、其它螺纹Other threads
        SM－－－－缝纫机螺纹Thread for sewing machine
        PZ－－－－气瓶用锥螺纹Special thread for gas cylinder
        5V1－20V1－气门芯螺纹5V1－20V1－Tyre valve thread

        螺纹代号说明示例：Explanation of thread code. e. g.
        1/4－20UNC
        1/4－公称直径1/4" nominal dia. 1/4"
        20－每寸20牙twenty teeth per inch
        UNC－美标统一制粗牙螺纹unified coarse pitch thread ( American standard

但还有GAZ是表示什么螺纹呢?

google 了一下，GAZ 好像是法国的螺纹。
http://www.jgbhose.com/base_page ... fication_french.asp

非常不错,终于知道了,谢谢你

GAZ 好像是法国的螺纹 详解  
Coupling Identification - French
There are five coupling systems generally used for hydraulic connections today. They are identified geographically or by country as:

North American  British  French German  Japanese


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French Thread Types
Popular couplings are French GAZ. These have a 24° seat and metric threads. These are similar to German DIN couplings, but the threads are different in some sizes. Although both are metric threads, the French use fine threads in all sizes and German DIN couplings use coarse threads in larger sizes. Most port connections are flange connections. French flanges are different than SAE & hellip; they have a lip that protrudes from the flange face. These are called Poclain style flanges.  
GAZ 24°
GAZ Poclain 24 Flange°


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GAZ 24°

The French Metric (GAZ) male will mate with the female 24° cone or the female tube fitting.

The male has a 24° seat and straight metric threads. The female has a 24° seat or a tubing sleeve and straight metric threads.

When measuring the flare angle with the seat angle gauge, use the 12° gauge. (The seat angle gauge measures the angle from the connector centerline.)

Metric
Thread Size Male Thread
O.D. (mm) Female
Thread I.D.
(in) Tube
O.D.
(mm)
M20x1.5 20.0 18.5 13.25
M24x1.5 24.0 22.5 16.75
M30x1.5 30.0 28.5 21.25
M36x1.5 36.0 34.5 26.75
M45x1.5 45.0 43.5 33.50
M52x1.5 52.0 50.5 42.25


French Metric (GAZ)

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GAZ Poclain 24° Flange

The Poclain (French GAZ) 24° high pressure flange is usually found on Poclain equipment.

The male flange will mate with a female flange or a port. The seal is made on the 24° seat.

Nominal Size A B C D E F
(in) (in) (in) (in) (in) (in) (in)
1/2 1.57 .72 2.20 1.89 .55 .35
5/8 1.57 .72 2.20 1.89 .55 .35
3/4 2.00 .94 2.75 2.38 .71 .43
  

Poclain (French GAZ)

感谢2楼详细的资料，，感谢6楼的翻译

和G还有ZG都没有什么联系吧？

又长见识了，谢谢大家！

资料很详细。。。对我帮助很大。。非常感谢二楼

上一日网胜读四年大学