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Copper Tube Information

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external threaded brass tube usa

author:MF manufacturerstime:2022-03-17 02:32:40

Tube thread is divided into the following three categories: 1。 British tube thread(55°)include:General sealing tube thread(R),Non-sealed tube thread(G),South Korea's Japanese old British tube thread(PT、PF) 2。 Ugly tube thread(60°)include:General sealing tube thread(NPT、NPSC),Dry sealing tube thread(NPTF、NPSF、NPSI、PTF-SAE SHORT),Non-sealed tube thread(NPSM、NPSL、NPTR、NPSH、NH、NHR)3。

external threaded brass tube usa
(external threaded brass tube usa)
external threaded brass tube usa

See the national standard for detailsGB/T 7306-2000。New old standard55°Non-sealing cylindrical threads are allG。 2Mark editing British pipe thread(55°)⑴55°British seal tube thread(R)[1-2] Complete marker of British Sealing Tube Thread by Thread Characteristics、Thread size and spin-to-code composition。

(external threaded brass tube usa)external threaded brass tube usa

When the thread is left-handed,Should be the codes“LH”;Rotary thread of thread omitted omitted。①Cylindrical thread with conical thread[1] Thread character code:RP ——Indicate cylindrical thread;R1——Cones externally threaded with the cylindrical thread;When the thread is,Threaded characteristicsRP/R1(Cylindrical thread/Cone thread)Mark example:Size3/4Right-rotated cylindrical thread,Mark asRP 3/4;Size3/4Left-rotated cylindrical thread,Mark asRP 3/4 LH;Size3Right rotating cone exterior thread,Mark asR1 3;Size code3Right-rotated cylindrical thread and threaded sub-thread,Mark asRP/R1 3②Conicone thread with conical thread[1] Thread character code:RC——Indicates a cone internal thread;R2——Cones externally threaded with conical threads;When the thread is,Threaded characteristicsRC/R2(Cone internal thread/Cone thread)Mark example:Size3/4Rotary cone internal thread,Mark asRC 3/4;Size3/4Left rotary cone internal thread,Mark asRC 3/4 LH;Size3Right rotating cone exterior thread,Mark asR2 3;Size code3Rotary cone inner thread and threaded depth composition of cone outer thread,Mark asRC/R2 3⑵ 55°British non-sealed tube thread(G)[3] Complete marker of British non-intuitive tube thread by thread characteristics,Thread size,Medium diameter tolerance level code and rotary code。

British non-sealed cylindrical threaded characteristics:GInto-unmatched cylindrical thread,Among them, the diameter tolerance level is issued;The medium-sized magazine level of the English non-sealed cylindrical thread isAandB。The rotation code of the left-handed thread isLH;Rotary thread of thread omitted omitted。

When a threaded sub-thread thread is used,Tag code only with external thread。Example:Size2Right-handed,Non-sealed cylindrical thread:G2Size3ofAclass,Right rotation,Non-sealed cylindrical thread:G3ASize4ofBclass,Left,Non-sealed cylindrical thread:G4 B-LHSize2Right-handed,Non-sealed cylindrical threadAThreaded sub-thread composition:G2AProcessing the inner hole thread is a tube threaded tap Processing external thread。

external threaded brass tube usa

2。 Ugly tube thread(60°)⑴60°US sealed tube thread(NPT、NPSC)[4] Complete marker of American sealed tube threaded by thread characteristics、Thread size code and threaded teeth composition。For standard threads,Allows threaded teeth within the omitted mark。For left-handed thread,Be followed by the size code“LH”。

Thread character code:NPT—— Cone tube threadNPSC—— Cylindrical internal thread tag example:Dimension3/4、14Tooth thread:NPSC 3/4-14 or NPSC 3/4Dimension6Rotary cone internal thread or cone external thread:NPT 6Dimension14Left rotation cone internal thread or cone external thread:NPT 14-LH⑵60°Meikian dry sealing tube thread(NPTF、NPSF、NPSI、PTF-SAE SHORT)See the national standardGB/T 27944-2011other:55°Conversion of cone pipe threads55°Cone tube thread,Refers to the threaded tooth angle55°、Thread has1:16Taper。

This series is widely used in the world.,Its code,Country。China U.K France Japan isoCode number ZG R(outside) G PT RR(External thread) Rc(Inside) R R Rc60°Conversion of cone pipe threads60°The conical tube thread refers to teeth.60°、Thread taper1:16Tube thread,This series of threads in my country's machine tool industry and the United States、Former Soviet application。

(external threaded brass tube usa)

2,No。3,No。4,No。5,No。6。Cone/Cone inspection refers to the standard of machinery industryJB/T10031-1999,useR,RA,RB。

external threaded brass tube usa
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