... manufacture in China,we cansupply straight seam steel pipe,spiral steel pipe,seamless steel pipe,elbow, bend,end cap,flange,tee,reducer( ... concentric and eccentric) and high pressure pipe with competitive price and excellent product. Description of alloy ... : Technique: high frequency weldThickness: 0.5mm --15mmSize:10*10-- 600*600mmLength: 3-17m or as your demand (fixed length and ...