Home » Seamless Precision Steel Tubes » P5 alloy steel pipe introduced

P5 alloy, hollow section, a large number of pipes used as transmission fluid, such as oil, natural gas, coal gas, water, some solid material piping and so on. Alloy, compared with solid steel round bar, resistance to bending and torsional strength is the same, light weight, alloy, is an economic section steel, widely used in the manufacture of structural components and mechanical parts, such as drill, propeller shafts, bike racks and construction steel scaffolding used in the construction. Alloy steel pipe manufacturing ring parts can increase material utilization, simplifying the manufacturing process, saving material and processing time, such as Jack and bearing rings, is currently widely used to manufacture. Alloy, or a variety of indispensable materials of conventional arms, the barrel, the barrel must steel pipe manufacturing. Alloy steel pipe cross sectional area can be divided into different shapes round tube and tube. Because the perimeter under equal conditions, the largest, with circular tube can deliver more fluid. In addition, the ring cross-section when subjected to internal or external pressure, force more evenly, so most of the steel pipe is the pipe.

① steel, the first two digits indicate the carbon content of the steel, expressed in per several of the average carbon content, such as 40Cr.
II the main alloying elements in steel, with the exception of individual micro-alloying elements, generally expressed as a percentage. When the average content of the alloy <1.5%,, steel, usually mark the element symbols, without indicating the content, but in exceptional circumstances are prone to cause confusion, in the elemental symbol can also be marked with the number “1”, such as steel, “12CrMoV” and “12Cr1MoV”, the former chromium content of 0.4-0.6%, which is 0.9-1.2%, the others are all the same. When the average content of alloying element ≥, ≥, 2.5% ≥ 1.5% 3.5% … … , In the elemental symbol behind the content should be marked, can be expressed as 2, 3, 4, … … Wait. For example, 18Cr2Ni4WA.
③ steel vanadium v, TI Ti, aluminum alloy elements such as AL, boron b, re RE, are micro-alloying elements, although the content is low, should still be marked out in the steel. For example in 20MnVB steel. V-0.07-0.12%, b-0.001-0.005%.
④ high quality steel in steel add “a”, to distinguish them from General steel.
⑤ Special-purpose alloy structural steel, steel named (or suffix) symbols that represent the steel use. Special 30CrMnSi such as rivet screw steel, steel is expressed as ML30CrMnSi.
High pressure boiler tube, and high pressure alloy tube, and low in the pressure boiler tube, and conveying fluid tube, and pipeline tube, and oil cracking tube, and fertilizer dedicated tube, and oil casing, and mechanical processing with seamless steel tube, and hot pipe, and hot spread pipe, and stainless steel tube, and pipe, and spiral tube, and General welding party moment tube, and seamless party moment tube, and hot plating zinc party moment tube, and cold plating zinc party moment tube, and stainless steel party moment tube, and fittings, and flange, and pipeline distribution tube,. Products are widely used in large thermal, chemical, petroleum, machinery, steel structure engineering, boiler, solar power plants, fertilizer plants, aluminum plant equipment, steel, auto parts, bridges, guardrails, ship’s internal structure, and other enterprises. Materials include 20CrMo-42CrMo, Cr5Mo, Cr9Mo, and A335P11, and A335P22, and 12Cr1MovG, 15CrMoG, 10CrMo910, 321, 304, 304L, 316, 316L, Q195-Q345B, and 10#, and 20#, and 45#, Q345, (b, c, d, e), 27SiMn, A335P91 (T91), T92, P9 and T9, P11 , P12, P22 (10CrMo910) 12Cr2MoWVTIB (steel research 102) implementation of international GB/T8162-2008, 20G, ST45.8/III (structural pipe), GB/T8163-2008 (pipes), GB3087-2008 (low/middle-pressure boiler steel pipe), GB5310-2008 (high-pressure boiler tubes), GB6479-2008 (fertilizer use), GB9948-2008 (oil pipe cracking) GB/T6728-2002 (welded rectangular pipe) GB/T14976-2008 (stainless steel), GB/T9711.1-1999 (oil and gas transportation industry pipe).

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