沟槽式管件的结构型式和基本尺寸要求A.1 三通、四通、90弯头、45弯头、22.5弯头的结构型式和基本尺寸见图C.1和表C.1。图C.1 三通、四通、90弯头、45弯头、22.5弯头表C.1 三通、四通、90弯头、45弯头、22.5弯头的基本尺寸 单位为毫米公称尺寸 DN管外径D三通L/mm四通L/mm90弯头L/mm45弯头L/mm22.5弯头L/mmGTGT-LGXGX-LG90EG90E-LG45EG45E-LG23EG23E-L6576.199-99-1285751-8088.9105-105-1336457100101.6120-120-1627073108125-125-1627073125133124164124164173240121125731501591431831431832002701301407920021917822817822825036015018098250273216266216266323435159210111300325254304254304375510188240124A.2 异径三通、异径四通、异径接头的结构型式和基本尺寸见图C.2和表C.2。图C.2 异径三通、异径四通、异径接头表C.2 异径三通、异径四通、异径接头尺寸 单位为毫米公称尺寸 DN管外径 DD1三通、四通异径接头GT GXGT-L GX-LGRCGRC-LL H1 H2L H1 H2LL806588.976.11058614010065101.676.11209314010080101.688.9120931401006510876.1125961301008010888.9125961301256513376.11241081351258013388.9124108135125100133101.61241141501331081241171501506515976.11431211401508015988.9143121140150100159101.6143127 150 1591081431301501501251591331431331831771502202006521976.11401511831771602502008021988.9140151183177160250 200100219101.61401571831771602502191081401601831771602502001252191331651632282021602502001502191591781652282081602502506527376.11401781902508027388.9140178190250100273101.61401841902731081401871902501252731331701902662311902802501502731591801922662341902802502002732192162032662581782803006532576.11452042203008032588.9145204220300100325101.6145210220 325108145213220300125325133170216220300150325159170218220305300200325219170229305279220305300250325273254231305291204305A.3 沟槽卡压异径接头、沟槽卡压异径三通、沟槽卡压异径四通的结构型式和基本尺寸见图C.3和表C.3。图C.3 沟槽卡压异径三通、沟槽卡压异径四通、沟槽卡压异径接头 单位为毫米公称尺寸 DN管端外径DD1三通、四通异径接头GTGXGT-LGX-LGRCGRC-LLHLHLL655076.150.87583133.5805088.950.88689806588.976.110511410050101.650.81009516210065101.676.112012016210080101.688.91201321005010850.8110991006510876.11251241008010888.91251351255013350.8105111173.5 1256513376.11241361641772361258013388.9124147164190246125100133101.61241611331081241631642122621505015950.8105124200.5 1506515976.11431491831902491508015988.9143160183203259150100159101.6143174 250.5 1591081431761832252752005021950.81431512006521976.11101512008021988.9138151 200100219101.61381572191081381602282272792505027350.81401502506527376.11401702508027388.9140217250100273101.61402312731081402333233005032550.81702223006532576.11702303008032588.9170243300100325101.6170260 325108170260266279A.4 沟槽法兰的结构型式与基本尺寸见图C.4和表C.4。图C.4 沟槽法兰结构图 表C.4 沟槽法兰尺寸的基本尺寸 单位为毫米公称尺寸 DN管外径DPN10PN16PN25LD1D2n-dTD1D2n-dTD1D2n-dT6576.170-1751458-18168088.9731901608-1818100101.673-2101808-18162251908-2218108732101808-18162251908-2218125133762402108-18182602208-2620150159792752408-22182902508-2620200219873302958-221633029512-221835031012-26202502739038535012-221839535512-2620-3003259543540012-221845041012-2620注：DN65、DN80的PN10和PN16法兰采用PN25法兰尺寸，DN100DN150的PN10法兰采用PN16法兰尺寸。