1. <listing id="26ji2"><object id="26ji2"><p id="26ji2"></p></object></listing><var id="26ji2"></var>
      2. <listing id="26ji2"></listing>
        <meter id="26ji2"><strong id="26ji2"><acronym id="26ji2"></acronym></strong></meter>
        1. 
          

            <tt id="26ji2"></tt>

                1. <output id="26ji2"><button id="26ji2"><address id="26ji2"></address></button></output>
                    <output id="26ji2"><pre id="26ji2"><dd id="26ji2"></dd></pre></output>
                        <meter id="26ji2"><delect id="26ji2"></delect></meter>
                          <label id="26ji2"></label>
                            <mark id="26ji2"><button id="26ji2"></button></mark>

                              <mark id="26ji2"><button id="26ji2"><address id="26ji2"></address></button></mark>

                              1. <listing id="26ji2"><object id="26ji2"></object></listing>

                                  <tt id="26ji2"><pre id="26ji2"></pre></tt>
                                  1. <label id="26ji2"><ruby id="26ji2"></ruby></label>
                                  2. <mark id="26ji2"><pre id="26ji2"></pre></mark>

                                  3. <code id="26ji2"></code>

                                  4. <tt id="26ji2"><wbr id="26ji2"></wbr></tt>

                                    <blockquote id="26ji2"></blockquote>
                                  5. <label id="26ji2"><button id="26ji2"></button></label>
                                    
                                    

                                      1. <mark id="26ji2"></mark>
                                        <output id="26ji2"></output>

                                        什么是BSP螺紋?

                                        2017-01-05 0

                                        BSP螺紋全稱是BritishStandard Pipe Thread,指的是英國標準管螺紋,屬于惠氏螺紋(BS 84)范疇。

                                        BSP螺紋按外形分為兩種:圓柱管螺紋BSPP(British Standard Pipe Parallel)和圓錐管螺紋BSPT(British Standard Pipe Taper)。前面說過,BSP螺紋屬于惠氏螺紋的一種,故牙型角為55°,如下圖示:

                                        111.jpg

                                        BSPP – 英制圓柱管螺紋

                                        歷史上的原因,BSPP同時又有其他不同的稱呼。常見的如BSPF(British Standard Pipe Fitting)、BSPM(British Standard Pipe Mechanical)和PS(British Standard Pipe Straight)等。

                                        然而,隨著后來ISO標準化的開始,這些五花八樣的稱呼統統用一個簡單明了的字母代替了。這就是G螺紋。

                                        于是:G = BSPP = BSPF = BSPM = PS = ……

                                        G螺紋分內、外兩種螺紋,用于非密封聯接。執行標準是BS EN ISO 228-1。

                                        BSPT – 英制圓錐管螺紋

                                        又稱PT螺紋,只用于一般密封聯接。BSPT舊標準為BS 21,而在新標準BSEN 10226-1中,用R螺紋替代。

                                        于是:R = BSPT= PT = ……

                                        R螺紋實際是一個系列,常見的有Rp、Rs、Rc、R1和R2。具體如下:

                                        ?  Rp – 英制密封圓柱內螺紋

                                        ?  Rs – 英制密封圓柱外螺紋

                                        ?  Rc – 英制密封圓錐內螺紋

                                        ?  R1 – 英制密封圓錐外螺紋,與Rp配合使用,即Rp/R1“柱/錐”配合

                                        ?  R2 – 英制密封圓錐外螺紋,與Rc配合使用,即Rc/R2“錐/錐”配合

                                        由此可見,一般密封英制管螺紋分為兩種:圓柱管螺紋和圓錐管螺紋。密封用圓柱管螺紋(Rp)設計牙型與非密封管螺紋G完全一致,不同之處在于螺紋精度。而密封用圓錐管螺紋(R)則在圓柱管螺紋基礎上按1:16的錐度進行技術轉化。其設計牙型如下圖示:

                                        112.jpg

                                        BSP螺紋分類關系圖:

                                        113.jpg

                                        北京赛车计划数据
                                            1. <listing id="26ji2"><object id="26ji2"><p id="26ji2"></p></object></listing><var id="26ji2"></var>
                                            2. <listing id="26ji2"></listing>
                                              <meter id="26ji2"><strong id="26ji2"><acronym id="26ji2"></acronym></strong></meter>
                                              1. 
                                                

                                                  <tt id="26ji2"></tt>

                                                      1. <output id="26ji2"><button id="26ji2"><address id="26ji2"></address></button></output>
                                                          <output id="26ji2"><pre id="26ji2"><dd id="26ji2"></dd></pre></output>
                                                              <meter id="26ji2"><delect id="26ji2"></delect></meter>
                                                                <label id="26ji2"></label>
                                                                  <mark id="26ji2"><button id="26ji2"></button></mark>

                                                                    <mark id="26ji2"><button id="26ji2"><address id="26ji2"></address></button></mark>

                                                                    1. <listing id="26ji2"><object id="26ji2"></object></listing>

                                                                        <tt id="26ji2"><pre id="26ji2"></pre></tt>
                                                                        1. <label id="26ji2"><ruby id="26ji2"></ruby></label>
                                                                        2. <mark id="26ji2"><pre id="26ji2"></pre></mark>

                                                                        3. <code id="26ji2"></code>

                                                                        4. <tt id="26ji2"><wbr id="26ji2"></wbr></tt>

                                                                          <blockquote id="26ji2"></blockquote>
                                                                        5. <label id="26ji2"><button id="26ji2"></button></label>
                                                                          
                                                                          

                                                                            1. <mark id="26ji2"></mark>
                                                                              <output id="26ji2"></output>

                                                                                  1. <listing id="26ji2"><object id="26ji2"><p id="26ji2"></p></object></listing><var id="26ji2"></var>
                                                                                  2. <listing id="26ji2"></listing>
                                                                                    <meter id="26ji2"><strong id="26ji2"><acronym id="26ji2"></acronym></strong></meter>
                                                                                    1. 
                                                                                      

                                                                                        <tt id="26ji2"></tt>

                                                                                            1. <output id="26ji2"><button id="26ji2"><address id="26ji2"></address></button></output>
                                                                                                <output id="26ji2"><pre id="26ji2"><dd id="26ji2"></dd></pre></output>
                                                                                                    <meter id="26ji2"><delect id="26ji2"></delect></meter>
                                                                                                      <label id="26ji2"></label>
                                                                                                        <mark id="26ji2"><button id="26ji2"></button></mark>

                                                                                                          <mark id="26ji2"><button id="26ji2"><address id="26ji2"></address></button></mark>

                                                                                                          1. <listing id="26ji2"><object id="26ji2"></object></listing>

                                                                                                              <tt id="26ji2"><pre id="26ji2"></pre></tt>
                                                                                                              1. <label id="26ji2"><ruby id="26ji2"></ruby></label>
                                                                                                              2. <mark id="26ji2"><pre id="26ji2"></pre></mark>

                                                                                                              3. <code id="26ji2"></code>

                                                                                                              4. <tt id="26ji2"><wbr id="26ji2"></wbr></tt>

                                                                                                                <blockquote id="26ji2"></blockquote>
                                                                                                              5. <label id="26ji2"><button id="26ji2"></button></label>
                                                                                                                
                                                                                                                

                                                                                                                  1. <mark id="26ji2"></mark>
                                                                                                                    <output id="26ji2"></output>

                                                                                                                    玩骰子规则 金财神稳赚包六肖原创 什么理财稳赚不赔 时时彩前二稳赚技巧 内部人员揭秘ag录像 二人斗地主让牌什么意思 超神软件 时时彩计划 下载 澳门银座时时彩平台 做什么稳赚不赔 福彩3d技巧 稳赚 重庆时时开奖记录 彩票免费计划软件黑马 斗牛棋牌游戏 30万本金网赌能稳赚吗 网赌输了20万 熬不住了