1. -Seamless karfe bututu ASTM A53 GR.B, karfe No.: SA53B, ƙayyadaddun: 1/4 "-28" 13.7-711.2mm 2. M karfe bututu ga high zafin jiki aiki: ASTM A106GR.B, karfe lambar: SA106B, ƙayyadaddun bayanai: 1/4 "-28", 13.7-711.2mm 3. bututun bututu API SPEC5L, Karfe No.: B, X42, X ...
Kara karantawa