PRODUCT STANDARD 产品标准 

对焊管件  BUTT WELDING FITTINGS 

GB/T12459GBT13401GB/T10752 

SH/T3065SH/T3408SH/T3409 

SYT5257SYT0609SY/T0518SY/T0510 

DL/T695DLT515GD2000GD87-1101 

HGT21635HG/T21631 

ASME B16.9 ASME B16.49 ASME B16.25 

MSS SP75 MSS SP43 

CSAZ245.11 

EN10253-1-EN10253-4 

D1N2605D1N2615D1N2616DiN2617 

BS1640-1-BS1640-4BS1965-1-BS1965-2 

G0ST17375GOST17376G0ST17378G0ST17379 

AFNOR NF A49-289 

AFNOR NFA170-1-AFNORNFA 170-4 

ISO3419 ISO5251 

JIS B2311 JISB2312 JISB2313