HG/T 20592  法兰盖 BL 250(B)-25 FF п©Б∙░п©Б■°п©Б∙▓п▒

BL250(B)-25 FF п©Б∙░п©Б■°п©Б∙▓п▒

BL150-25rf

WN 25(B)-63 RF Sch40F00 RF B=894FM600RF6rF0R00bd/u0h3 80.60 R=580F SCH806RFvleRF04RF Sch23 B

LWN50-150 rfSch4060WN

SO25-150 RF0Sch6mpquothg20615 w

SO 2"-600 RF

BL150-300 RF10RFr