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Alloy steel pipes for high pressure service

 The range of Alloy steel pipes for high pressure service pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.




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Multi-rifled seamless steel tube

  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 　...
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SA 209 T1

 Seamless carbon molybdenum alloy steel boiler and superheater tubes. ASTM A209 Grade T1a Alloy Steel Seamless Tubes are Carbon Steel Tubes with subsequent addition of chromium, molybdenum and sometimes vanadium are known as chrome Moly Tubes. ASTM Specification alloy steel Tubes are used for high temperature service applications. Seamless Alloy Steel Tubes according to ASTM A209 Grade T1a are reheated and furnished in full annlealed,isothermal annealed or normalised quenched and tempered condition. ASTM A209 Grade T1a Alloy Steel Seamless Tubes have a typical chemistry with additions of 0.44-0.65 Molybdenum. Bearing minimum tensile strength of 365 Mpa ASTM A209 Grade T1a Tubes have a minimum yield strength of 195 Mpa. ASTM A209 ASTM A209 cover several grades of minimum wall thickness seamless carbon molybdenum alloy steel, boiler and superheater tubes. This specification covers tubes 1/2 to 5 in. [12.7 to 127 mm] inclusive, in outside diameter and 0.035 to 0.500 in. [0.9 to 12.7 m...
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GB3087 steel pipe

 GB3087-2008 is applied to the seamless steel tubes that are made of quality carbon structural steels and used for manufacturing various low and medium pressure boilers. 1 Scope This standard specifies the dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality specifications of seamless steel tubes for low and medium pressure boilers. This standard is applicable to the manufacture of high-quality carbon structural steel hot-rolled (extruded, expanded) and cold drawn (rolled) seamless steel tubes for various structural low-pressure and medium-pressure boilers and locomotive boilers. 2 Reference standard The provisions contained in the following standards constitute provisions of this standard by reference in this standard. At the time of publication, the editions indicated were valid. All standards will be revised and parties using this standard should explore the possibility of using the latest version of the following stan...
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