弯头“ Elbow 90- BW 90LR ELBOW sch.40,50NB SS"里NB 50NB又等于多少呢?
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弯头“ Elbow 90- BW 90LR ELBOW sch.40,50NB SS"里NB 50NB又等于多少呢?
![弯头“ Elbow 90- BW 90LR ELBOW sch.40,50NB SS](/uploads/image/z/11247049-1-9.jpg?t=%E5%BC%AF%E5%A4%B4%E2%80%9C+Elbow+90-+BW+90LR+ELBOW+sch.40%2C50NB+SS%22%E9%87%8CNB+50NB%E5%8F%88%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91%E5%91%A2%3F)
NB和公称通径是一个意思,50NB就是2"尺寸的管件
弯头“ Elbow 90- BW 90LR ELBOW sch.40,50NB SS"里NB 50NB又等于多少呢?
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英语翻译LW PIPE;BOSS;STUB END;ELBOW 90 LR;REDUCER CONCENTR;EQUAL
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We have sweaters _____ all colors_____ $ 50 each. [ &nb
We have sweaters ________ all colors ________ ¥50 each. [&nb