????????
???????
?ó????????????????????糧????????????????????????????????????????????????????????????????????????????????硢????????????÷???????????????С??0.5??
???????H664H??H664Y
?????????DN50??1000mm
?????????PN1.0??10.0MPa
??????????550??
????????WCB??WC6??WC9
??????????????????????????
???????API 6D??BS 1868??GB/T 12235??GB/T 12236??JB/T 8937
???????ASME B16.10??API 6D??GB/T 12221
????????ASME B16.5??ASME B16.47??ASME B16.25??GB/T 9113??JB/T 79??HG/T 20592
??????飺API 598??API 6D??GB/T 13927??GB/T 26480
????????????ASME B16.34 ??GB/T 12224
