<strong id="gty2i"></strong>
    <tbody id="gty2i"><noscript id="gty2i"></noscript></tbody>
    1. <dd id="gty2i"></dd>
            1. <th id="gty2i"></th>

              <rp id="gty2i"></rp>

            2. <em id="gty2i"></em>
            3. <dd id="gty2i"><track id="gty2i"></track></dd>

              <button id="gty2i"><object id="gty2i"><input id="gty2i"></input></object></button>

              <button id="gty2i"><object id="gty2i"></object></button>

              1. <em id="gty2i"></em><th id="gty2i"></th>
                <rp id="gty2i"><object id="gty2i"></object></rp>
              2. <button id="gty2i"><object id="gty2i"><menuitem id="gty2i"></menuitem></object></button>
                1. <dd id="gty2i"></dd>

                    <dd id="gty2i"><track id="gty2i"></track></dd>
                  1. <progress id="gty2i"></progress>

                      1. <th id="gty2i"></th>
                        <button id="gty2i"><object id="gty2i"></object></button>
                          <tbody id="gty2i"></tbody>
                            <dd id="gty2i"></dd>
                            <button id="gty2i"><object id="gty2i"><input id="gty2i"></input></object></button>

                          1. <em id="gty2i"></em>
                          2. <tbody id="gty2i"></tbody>
                            1. <span id="gty2i"></span>
                              
                              

                              <th id="gty2i"></th>

                              <tbody id="gty2i"></tbody>

                            2. 
                              

                              <nav id="gty2i"><optgroup id="gty2i"></optgroup></nav>

                              <button id="gty2i"><acronym id="gty2i"></acronym></button>

                              <th id="gty2i"></th> <em id="gty2i"></em><tbody id="gty2i"></tbody>
                                  <rp id="gty2i"><object id="gty2i"><blockquote id="gty2i"></blockquote></object></rp>
                                  <em id="gty2i"></em>
                                  1. <s id="gty2i"><mark id="gty2i"></mark></s>

                                    Valve standard number and name

                                    2014-08-13 Number of attention:

                                    Valve manufacturing enterprises have an implementation standard, implementation standards include national standards and enterprise standards, national standards are unified, enterprise standards can be based on the enterprise itself to do the specification. The main function of the implementation standards of commodities is to eliminate counterfeit and inferior products, ensure the quality of commodities, and have a supervisory role.


                                    Valve manufacturer belongs to the machinery manufacturing industry, such as gate valves, ball valves, butterfly valves and other valves have occupied an important position in the national economic construction. The following is the introduction of odd high valve to introduce the implementation criteria of the valve.

                                    Standard number
                                    Standard name
                                    GB/T1047-1995
                                    Nominal diameter of pipe components
                                    GB/T1048-1990
                                    Nominal pressure of pipe components
                                    GB/T11698-1989
                                    The structural flange of a ship flange is connected to a metal valve.
                                    GB/T12220-1989
                                    General valve sign
                                    GB/T12221-1989
                                    Flange connecting metal valve structure length
                                    GB/T12222-1989
                                    Connection of multi turn valve actuating device
                                    GB/T12223-1989
                                    Connection of partial rotary valve actuating device
                                    GB/T12224-1989
                                    General requirements for steel valves
                                    GB/T12247-1989
                                    Classification of steam traps
                                    GB/T12248-1989
                                    Steam trap terminology
                                    GB/T12249-1989
                                    Steam trap sign
                                    GB/T12250-1989
                                    Steam trap structure length
                                    GB/T12712-1991
                                    Technical requirements for condensate recovery and steam traps in steam heating system
                                    GB/T15188.1-1994
                                    Valve structure length to butt welded valve
                                    GB/T15188.2-1994
                                    Valve structure length to butt welded valve
                                    GB/T15188.3-1994
                                    Valve structure length internal threaded connection valve
                                    GB/T15188.4-1994
                                    Valve structure length external threaded connection valve
                                    GB/T12225-1989
                                    General requirements for copper alloy castings
                                    GB/T12226-1989
                                    General specification for grey iron castings of valves
                                    GB/T12227-1989
                                    General Valve Specification for ductile iron castings
                                    GB/T12228-1999
                                    General specification for carbon steel forgings of general valves
                                    GB/T12229-1989
                                    General specification for carbon steel castings for general purpose valves
                                    GB/T12230-1999
                                    General requirements for austenitic steel castings for general valves
                                    GB/T4213-1992

                                    Pneumatic control valve

                                    GB/T8464-1998
                                    Internal thread connecting valve for plumbing
                                    GB10877-1989
                                    Oxygen bottle valve
                                    GB/T12232-1989
                                    General valve flange connection iron gate valve
                                    GB/T12233-1989
                                    General purpose valve, iron stop valve and lift check valve.
                                    GB/T12234-1989
                                    General purpose valve flanges and butt welded steel gate valves
                                    GB/T12235-1989
                                    General valve flange connection steel stop valve and lift check valve.
                                    GB/T12236-1989
                                    Universal valve steel swing check valve
                                    GB/T12237-1989
                                    General purpose valve flanges and butt welded steel ball valves
                                    GB/T12238-1989
                                    General valve flange and clip butterfly valve
                                    GB/T12239-1989
                                    General valve diaphragm valve
                                    GB/T12240-1989
                                    Universal valve iron cock valve
                                    GB/T12241-1989
                                    General requirements for safety valves
                                    GB/T12243-1989
                                    Spring direct load safety valve
                                    GB/T12246-1989
                                    Pilot-operated reducing valves
                                    GB/T13932-1992
                                    General purpose valve iron rotary check valve
                                    GB/T14173-1993
                                    Technical requirements for plane steel gate valves
                                    GB/T15185-1994
                                    Iron and copper ball valves
                                    GB/T12242-1989
                                    Test method for safety valve performance
                                    GB/T12245-1989
                                    Test methods for performance of pressure reducing valves
                                    GB/T12251-1989
                                    Test methods for steam traps
                                    GB/T13927-1992
                                    General valve pressure test
                                    日本无毛一卡二卡三卡