ACME转换接头-河..

STC短圆套管变扣-..

加厚短接-nue油管..

隆凯来库存销售(图)..

BGT2类似扣套管变..

油管变扣-隆凯来接箍..

STC短圆套管变扣-..

BGT1油管变扣-油..

钻杆扣变扣接头-大港..

TPFJ类似扣转换接..