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Alloy Steel Pipes as per ASTM A335 Pipes (ASME S/A335, Chrome-Moly) is a seamless ferritic Pipes for high temperature service. Pipes manufactured to this specification shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. It Is referred to as â€œP Gradeâ€, chrome moly pipe is popular in P-Grades P5, P9, P11, P22, and P91. The most common use of grades P11, P22, and P91 is in the power industry and petro-chemical plants, Grades P5 and P9 are commonly used in refineries.
A335 is often called chrome moly pipe because of the chemical makeup of Molybdenum (Mo) and Chromium (Cr). Molybdenum enhances the strength of steel as well as the elastic limit, resistance to wear, impact qualities and hardenability. Moly increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is the most effective single additive that increases high temperature creep strength. It also enhances the corrosion resistance of steel, and inhibits pitting. Chromium (or chrome) is the essential constituent of stainless steel. Any steel with 12% or more Chrome is considered stainless. Chrome is virtually irreplaceable in resisting oxidation at elevated temperatures. Chrome raises the tensile, yield, and hardness at room temperatures. The composition chrome moly alloy steel pipe make it ideal for use in power plants, refineries, petro chemical plants, and oil field services where fluids and gases are transported at extremely high temperatures and pressures.
We, SILVER TUBES, stock full range of the following A335 pipe grades:
Pipes : ASTM A335 GR P5 | GR P9 | GR P11 | P12 | GR P22 | GR P91 | P92.
Size Range: 1/2"-48"
Schedules: 20, 30, 40, Standard (STD), 60, Extra Heavy (XS), 80, 100, 120, 140, 160, XXS
Unscheduled heavy wall pipe thicknesses available up to 4 inches.
Tubes : ASME SA213 Grade T11, T12, T5, T9, T22, T91, T92
Size Range: 12.7MM OD TO 168.7 MM OD
Thickness: 1.65MM TO 16MM THK