углерода бесшовных стальных труб или трубок

We can produce the tubes with OD: 4-100mm, WT: 0.5-14mm, mainly used in mechanical, automobile, oil, chemistry, etc. Main grades:10,20,35,45,40Mnz,20Cr,40Cr,15CrMo,20CrMo, 30CrMo,42CrMo,38CrMoAl,20CrMnTi,30CrMnSi,40CrNiMo. Size (mm) Tolerance (mm) Cold drawn and cold roll precision seamless steel tubeOD 4-10 10-30 30-50 >50 ±0.10 ±0.20 ±0.25 ±0.5%WT ≤1 1-3 >3±0.12 ±10% ±10% GB/T 8162 Seamless steel tubes for structural GB/T 8163 Seamless steel tubes for liquid delivery YB/T 5052 Seamless steel tubes for diamond-impregnatedASTM A 179 Seamless cold drawn steel tube for heat exchanger and condenser ASTM A 519 Seamless carbon and alloy steel mechanical tube ASTM A 53 Seamless(welded)steel tube and hot zinc coated tube ASTM A 106 Seamless carbon steel tube used in high-temperature condition ASTM A 335 Ferritic alloy-steel tube used in high-temperature conditionASTM A 333 Seamless and welded steel tube usedc in low-temperature conditionJIS G 3444 carbon steel tube for commom structureJIS G 3445 carbon steel tube for commom structureJIS G 3441 alloy steel tube for mechanicalJIS G 3458 alloy steel tube for pipe JIS G 3452 carbon steel tube for pipe