... API, TS16949,KR Out diameter:19.05-114.3mm; Seamless Carbon Steel Pipes Certificate:ISO9001-2000,PED, API, TS16949,KR Out diameter:19 ... ; Wall thickness:2-14mmOur main products' summary1) Cold drawn carbon seamless steel tube2) Certificate: ISO9001-2000,PED, API, TS169493) Standard: ASTM ... or L/C 9) Mini order: 10 tons ON SALE: Seamless Carbon Steel Pipes, ASTM A179, A192, DIN17175, BS3059, A334 Gr.6, ...