concrete pump spare parts of pm pump pipe DN125 x 3000mm with thickness of 4.5mm,4.5mm,7.0mm made by ST52 seamless steel pipes concrete pump spare parts: Name: pm pump pipe Size: DN125 DN100 DN150 DN180 Length: according to your requirements Quality: St52, hardened or twin-wall pipe Thickness: 4.0mm, 4.5mm, 7.0mm Weld-on ends: 148mm,...