• <tr id='Kn8gML'><strong id='Kn8gML'></strong><small id='Kn8gML'></small><button id='Kn8gML'></button><li id='Kn8gML'><noscript id='Kn8gML'><big id='Kn8gML'></big><dt id='Kn8gML'></dt></noscript></li></tr><ol id='Kn8gML'><option id='Kn8gML'><table id='Kn8gML'><blockquote id='Kn8gML'><tbody id='Kn8gML'></tbody></blockquote></table></option></ol><u id='Kn8gML'></u><kbd id='Kn8gML'><kbd id='Kn8gML'></kbd></kbd>

    <code id='Kn8gML'><strong id='Kn8gML'></strong></code>

    <fieldset id='Kn8gML'></fieldset>
          <span id='Kn8gML'></span>

              <ins id='Kn8gML'></ins>
              <acronym id='Kn8gML'><em id='Kn8gML'></em><td id='Kn8gML'><div id='Kn8gML'></div></td></acronym><address id='Kn8gML'><big id='Kn8gML'><big id='Kn8gML'></big><legend id='Kn8gML'></legend></big></address>

              <i id='Kn8gML'><div id='Kn8gML'><ins id='Kn8gML'></ins></div></i>
              <i id='Kn8gML'></i>
            1. <dl id='Kn8gML'></dl>
              1. <blockquote id='Kn8gML'><q id='Kn8gML'><noscript id='Kn8gML'></noscript><dt id='Kn8gML'></dt></q></blockquote><noframes id='Kn8gML'><i id='Kn8gML'></i>
                网站标志
                新闻详情
                 
                当前位置
                NGT-美国气瓶圆锥螺纹,牙型角60°,锥度1:16
                作者:管理员    发布于:2019-08-02 13:19:13    文字:【】【】【
                摘要:The NGT screw thread connection is intended for transmission of dangerous gases. Things that if leak cause death and destruction to the immediate area and maybe beyond. A mis-made NGT thread can be a product liability issue. If the thread that you made fails, you can be sure that the lawyers will be asking you to prove that you own the thread specification and that you used the fully battery of calibrated gauges on the parts as they were made.

                 

                 

                进口NGT气瓶圆锥螺纹规

                 

                NPT-一般密封圆锥管螺纹,牙型角60°,锥度1:16
                NGT-美国气瓶
                圆锥螺纹,牙型角60°,锥度1:16,这个好像只有右旋

                NGT vs. NPT

                NGT = National Gas Taper per ANSI CGA V-1 Specification
                NPT = National Pipe Taper per ANSI B1.20.1 Specification

                Both NGT and NPT pipe screw thread forms have many similarities.

                They have the same:
                Lead 
                Pitch
                Taper
                Flank Angles
                E0 Pitch Diameter 
                E1 Pitch Diameter 
                Major Diameter Truncation
                Minor Diameter Truncation

                The differences are:

                1. The NPT screw thread connection is intended for transmission of non-hazardous substances, like water.

                2. The NGT screw thread connection is intended for transmission of dangerous gases. Things that if leak cause death and destruction to the immediate area and maybe beyond. A mis-made NGT thread can be a product liability issue. If the thread that you made fails, you can be sure that the lawyers will be asking you to prove that you own the thread specification and that you used the fully battery of calibrated gauges on the parts as they were made.

                3. The NGT is a longer screw thread than the NPT. The NGT minimum effective length is approximately 3 threads longer than the NPT.

                4. The NGT screw thread has tighter control of the major and minor diameter truncations than the NPT.

                5. The ANSI B1.20.1 Specification which defines the NPT screw thread only requires: 
                NPT-L1 Taper Screw Thread Ring Gage
                NPT-L1 Taper Screw Thread Plug Gage

                NOTE: The NPT-L1 Basic-Step taper screw thread gauge members are very similar to the NGT-L1 Basic-Step taper screw thread gage members, but not interchangeable. The pitch diameters are the same, but the minor and major diameters have tolerance differences in a direction that may allow a NPT-L1 Basic-Step taper screw thread gauge members to be modified into a NGT-L1 Basic-Step taper screw thread gage members. This is why the price of the L1 Basic-Step taper screw thread gauge member may be less than the other members.

                6. The ANSI CGA V-1 Specification defines a complicated screw thread measurement system. There are rumors in the industry that the standard is being rewritten to simplify the screw thread gauge system. Many companies have been using the following tapered screw thread gages with full success:
                NGT-L1 Taper Screw Thread Ring Gage
                NGT-L8 Taper Screw Thread Ring Gage
                NGT Crest-Check 6-Step Taper Plain Ring Gage
                NGT Root-Check 6-Step Taper Screw Thread Ring Gage
                NGT-L1 3-Step Screw Thread Plug Gage
                NGT-L9 3-Step Screw Thread Plug Gage
                NGT Crest-Check 6-Step Taper Plain Plug Gage
                NGT Root-Check 6-Step Taper Screw Thread Plug Gage

                This screw thread gauge system requires 3-step L1, L8 and L9 taper screw thread gage members, but most gauge makers only offer Basic-Step members. The 3-Step L1 and L9 plug gauge members are readily available for an extra cost. The 3-Step L1 and L8 taper screw thread ring gages require special gauge blanks and thus usually are available only with extended lead-time and increased price.

                This system requires the Root-Check and Crest-Check taper gage members to be made as 6-Step, which is the form that the gauges are quoted by default.

                NGT = National Gas Taper per ANSI CGA V-1 Specification
                NPT = National Pipe Taper per ANSI B1.20.1 Specification
                NGO = National Gas Outlet
                ANSI CGA V-1 Specification = CSA B96
                ANSI CGA V-1 Specification formerly ANSI B57.1

                 

                 

                 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AB两面级、丝锥分GGDStraight pipe thread ( Outside )

                                      thread in A\B: taps in GGD )

                            R----锥管外螺纹(旧代号ZG;KGOutside paper pipe thread ( Old thread code  ZG,KG )

                            RC----锥管〖内螺纹(旧代号ZG;KGInside 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NCUnified coarse pitch thread ( Instead of NC )

                            UNF----统一制细牙螺■纹(代替NFUnified 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ㄨ螺距螺纹Unified thread

                            UNS----统一制特殊螺纹Unified Special thread

                            NB―――――美国标准锯齿螺纹American standard buttress threads

                            NPT----一般※用途锥管螺纹(旧代号Z;KTaper 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----干密封锥管々螺纹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

                            5V120V1-气∮门芯螺纹5V120V1Tyre valve thread


                           
                螺纹代号说明示例:Explanation of thread code. e. g.

                            1/420UNC

                            1/4-公称直径1/4" nominal dia. 1/4"

                            20-每寸20twenty teeth per inch

                            UNC-美标统一制粗牙螺纹unified coarse pitch thread ( American standard

                 

                NGT TAPER THREAD GAUGES
                NGT(National Gas Taper) threads are used to check gas cylinder valve stems & cylindrical neck threads.
                (Taper 1in 16 on Diameter)

                 

                Specifications :- American Handbook H-28 part II 1957.
                3/4’’-14 NGT size is manufactured as per IS 9121-2005 on customer request.

                 

                Manufacturing Range :

                 

                Taper Thread Plugs L1 & Gauge L9, Plain Taper Plugs to check truncation of minor diameter-Gauge C1 & C2, Taper Thread Rings L1 & L8,Master check plugs to check thread rings L1 & L 8.
                Plain Taper Ring to check crest Truncation of major Diameter.
                Sizes Covered are from 1/8 NGT to 1.1/2 NGT.

                       苏州斯文克精密测量设备有限公司坐落于古城苏州,是一家专』业的进口仪器、量具、量规代理商。自2012年成立以来,涉及航空、核工业、汽车动力、石油机械、医疗卫生等领∮域。本着“诚信经营、合作双赢”的宗旨与西飞集团、派克汉尼汾、泰钢合金等国际知名企业建立了良好的合作关系,并取得了客户的认可。销售产品:美国PMC石油螺纹规,美国Vermont螺纹规,Sun-tec硬度块,Clark硬度计,Dorsey孔径量仪,Gagemaker石油螺纹单项仪,WESTport量规,SPI通用量具,Rex Gauge邵氏硬度计,Barcor倒角规,VTG螺纹规,德国LMW螺纹规,英国threadmaster螺纹规,瑞士Trimos测高仪,意大利marposs电子柱,美国Johnsongage螺纹测量仪,日∏本测范社JPG螺纹牙规,德国Stotz测量工作站,JBO螺纹规,德国IBR C200电子柱,美国GSG螺纹环规,NIST冲击标准试↙块,HBPV螺纹塞规,VR螺纹塞规,Sharp Vee,Cameron ball gage等。公司全体销售技术人员都拥有数年的一线计量、测量实际经验,70%拥有机械、测试本科学历,期待您的光临。


                 

                   

                QQ客服
                点击这里给我发「消息