Multi-rifled seamless steel tube is used as a water wall tube loaded with a highly heated flux and is also expected to find broadened other uses in the viewpoint of iits energy saving effect and higher safety against the overheating damage. This has groove on its inside surface which functions to raise thermal efficiency by distrubing the fluid within the tube, featuring and extremely high thermal conduction property. Available grades and size range: Multi-rifled seamless steel tube are produced to meet specific end use requirements, specifications, tolerances and chemistries. Standard Grade Specification O.D.(mm) W.T.(mm) Number of rib GB/T 20409-2006 20G 15CrMoG SA-210A1 SA-210C SA-213 T2 SA-213 T12 22-83 4.5-13 4-14 Grade and Chemical Composition (%) Steel Grade C Si Mn S P Cr Mo 20G 0.17-0.23 0.17-0.37 0.35-0.65 0.015 0.025 15CrMoG 0.12-0.18 0.17-0.37 0.40-0.70 0.015 0.025 0.80-1.10 0.40-0.55 A 210A1 SA-210A1 ≤0.27 ≥0.10 ≤0.93 0.020 0.025 ...
Boiler tubes are used in heat exchange appliances in which the energy is transferred from one medium to the other.
评论
发表评论