Car Radiator, Industrial Radiator, Intercooler manufacturer / supplier in China, offering Precision Steel Pipe Manufacturers Offer High Strength, No Deformation, and Direct Delivery in Stock, Direct Sales of Gcr15 Precision Tubes From The Manufacturer, with Fast Delivery, Outer Diameter: 25-377mm, Wall Thickness: 2-60mm Precision Seamless Steel Tubes (can be annealed without oxygen) and so on.