GB/T 12459  弯头 DN 40-Sch1090ES/h80k=94 b=/Sc9

DN 40-Sch10 90ES/h80k=94 b=/Sc9

PL 20(B)-10 RF RF6s600.55S501sch80c b=500-2.5RF1000-0.615

SO 250-150 RF300-120/5s=8-20F=25/ HG=T2-40FM S

SO40(B)-16Gm60FRJ S

SO 500-150 RF56；δs=5=3.2-600RJ&a0A5-150 r4cฟฝ

HP-2 пS=10(B)-

pl50(b)-16 ff0-4.00-4.