GB/T 12459  弯头 DN 25-1590EL SRFRFF3003Mm10-600 RF Sch4Fampampampwd=&

DN 25-15 90EL SRFRFF3003Mm10-600 RF Sch4Fampampampwd=&

WN250-300 RF S=4.5R0.6/45.5.6f

2 B4°sRF RF Sc FMf4 R R TRп═5C=200FB)-1-4./uRF@A 10-4.

3 M 900-6.43.60 RFF”¯åº§bi706 S.27- fm 60

wn15(a)-100rf s=3010-mpam

47021 fm 900-0.6 δ=60

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