... .Buy our products to save your money. Seamless Pipe Outside diameter: 13.7-610mm (1/4-24 ... inch)Thickness: SCH 20 to SCH 140 (1.73-36.5mm)Standard: API ... X42, X46, X52, X56, X60, X65, J55, K55, 20,16Mn, ST37, ST52Packing: Labeled and bundled together with steel stripApplication ... holds one φ140-φ381 middle straight seam steel pipe production line and four production lines ofφ219-φ2032 ...