Tafuta ' ' kupata maudhui yanayofaa , ambayo inachukua sekunde }
Muhtasari:According to the purpose it can be divided into oil well pipe (casing, oil pipe and drill pipe),MatouryMtengenezaji wa v[Soma maandishi yote]
Muhtasari:MatouryHatua ya usafi wa maji ya chuma isiyo na msimamo,Matoury1 Cr18Ni9Ti pipe ya chuma,Mchakato wa uzalishaji wa pipe [Soma maandishi yote]