90 elbow welded bw s-std ss astm a403 gr.wp304 cryogenic ser
90 elbow welded bw s-std ss astm a403 gr.wp304 cryogenic ser
90 DEG ELBOW STAINLESS STEEL BUTT WELD SCH.10 20" ASTM A403
一个管件的描述45 ELL LR,BW,304LSS ASTM A403-WP304L-S,ASME B16.9 S-4
弯头“ Elbow 90- BW 90LR ELBOW sch.40,50NB SS"里NB 50NB又等于多少呢?
PIPE NIPPLE SMLS POE/TOE S-80S SS ASTM A312 GR.TP304 L=500MM
PIPE NIPPLE SMLS TBE( or PBE) S-80S SS ASTM A312 GR.TP304 L=
英语翻译SS FLANGE,ASTM A-182 GR-F316L,FLANGE TYPE;BLIND FACE TYP
LAP JOINT FALNGE CL150 FF SS ASTM A183 GR.F304L ASME-16.5
ELBOW 90 304L SCH.20 BW LR分别代表什么意思?
ASTM A234 Gr.
ASTM A182 GR F316 GR代表什么?
ASTM A193 Gr.B7中 的Gr