HG/T 20592  法兰盖 BL 20-16 RF50 RF SCH40

BL 20-16 RF50 RF SCH40

PL100(B)-6 RF6R Fch80/7023r

BI 160000

SO 5"-400 LT=152L1RF)-109

PL 80(B)-16 FF=152.40-0.6.f400-1.0FHGRF S

BL800-150RFп╟п÷п╒п┴п╟п▒я┌�

2 G 1000-1.620δ1

BI 500F¤�-4.0/8š6f106 DNhF/

pl20a-10rf50RF0)-