... Parts-Boom Pipe Material:ST52, 45Mn2, 20#,Q235 Brand: Schwing, PM, Sany, Kyokuto DN125 5 1/2" Concrete Pump Straight Pipe ... )Weld-on EndsApplicable pump BrandsST52/ST37/20#/Q235steel pipe1254.03000/2000/1000148mmSchwing,Putzmeister, CIFA, Kyokuto, Sany,4.5148mmSchwing,Putzmeister, CIFA, Kyokuto ... -6inch F/MOthers8.010006inch HD/ZX-6inch F/MOthersproduct picture: PM Concrete Pump Spare Parts-Boom Pipe