Buy Direct From Our Factory: A335 P11, A369 FP12, A213T11 Alloy Steel Pipe

A335 P11 A369 FP12 A213T11 alloy steel pipe

T11 alloy tube is called T11 alloy tube because the material is T11. T11 alloy pipe is a product of seamless steel pipe. The solid tube blank is inspected and cleaned of surface defects, cut to the required length, centered on the perforated end surface of the tube blank, and then sent to the heating furnace to be heated and pierced on the punching machine. When the perforation continuously rotates and advances at the same time, under the action of the roller and the plug, a cavity is gradually formed inside the tube blank, which is called a capillary tube. And then sent to the automatic rolling mill to continue rolling. Finally, the whole wall thickness is uniformed by the whole machine, and the diameter is sizing by the sizing machine to meet the specification requirements. It is a more advanced method to produce hot-rolled T11 alloy tubes using continuous tube rolling mills. If the diameter of the production is relatively small, and the precision of the steel pipe and the appearance quality of the surface are relatively high, then the cold drawn process is used for production. T11 alloy tubes are widely used in high-pressure pipelines, vessels, heat exchangers, boiler tubes, and power plants. The biggest advantage of alloy steel pipe can be 100% recycled, which is in line with the national strategy of environmental protection, energy saving and resource saving. The national policy encourages the expansion of the application field of high pressure alloy pipe. At present, my country's consumption of alloy pipes accounts for only half of the total steel products in developed countries. The expansion of the use of alloy pipes provides a broader space for the development of the industry. According to the research of the expert group of the Alloy Pipe Branch of the China Special Steel Association, the demand for high-pressure alloy pipe long products in my country will increase by 10-12% annually in the future. Alloy pipe is defined by steel pipe according to the production material (that is, material), as the name suggests, is pipe made of alloy; while seamless pipe is defined by steel pipe according to the production process (seamless and seamless), the difference from seamless pipe is Seam pipes, including straight seam welded pipes and spiral pipes. The material of alloy tube is roughly as follows: 16-50Mn, 27SiMn, 40Cr, 12-42CrMo, 16Mn, 12Cr1MoV, T91, 27SiMn, 30CrMo, 15CrMo, 20G, Cr9Mo, 10CrMo910, 15Mo3, 15CrMoV, 35CrMoV, 45CrMo, 15CrMoG, 12CrMoV, 45Cr, 50Cr, 45CrNiMo and so on.

Description

27SiMn seamless steel pipe, i.e. 27 silicon manganese seamless steel pipe, is one of the materials of seamless steel pipe, and the carbon content is between 0.24-0.32%. SIMN is listed separately because the content of silicon manganese in the five elements (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur s) is about 1.10-1.40%. 27SiMn seamless pipe is suitable for power plant, boiler plant, chemical industry, vehicle and ship accessories, etc.27SiMn, hydraulic strut pipe. Unified digital code: a10272 Standard: GB / t17396-2018

Main Features

This kind of steel has better properties than 30Mn2 steel, high hardenability, critical hardenability diameter of 8 ~ 22mm in water, good machinability, medium cold deformation plasticity and weldability; In addition, the toughness of steel does not decrease much during heat treatment, but it has quite high strength and wear resistance, especially when water quenching; However, this steel is sensitive to white spot, temper brittleness and overheating sensitivity during heat treatment.

Application Example

This kind of steel is mainly used in the quenched and tempered state to manufacture hot stamping parts requiring high toughness and wear resistance; It can also be used under normalized or hot rolling supply, such as tractor track pin, etc.

Application

Application of 27 SIMN seamless pipe and ordinary steel pipe 27SiMn seamless steel pipe 27SiMn seamless steel pipe 1. Seamless steel pipe for fluid: GB / t8163-2018 2. Seamless steel pipe for boiler: GB / t3087-2018 3. High pressure seamless pipe for boiler: GB / t5310-2018 (ST45.8 - type III) 4. High pressure seamless steel pipe for chemical fertilizer equipment: GB / t6479-2018 5. Seamless steel pipe for geological drilling: yb235-70 6. Seamless steel pipe for oil drilling: yb528-65 7. Seamless steel pipe for petroleum cracking: GB / t9948-2018 8. Special seamless pipe for petroleum drill collar: yb691-70 9. Seamless steel pipe for automobile axle shaft: GB / t3088-2018 10. Seamless steel pipe for ships: GB / t5312-2018 11. Cold drawn cold rolled precision seamless steel pipe: GB / t3639-2018 12. Seamless steel pipe for hydraulic prop: GB / t17396-2018 Mechanical properties of 27SiMn seamless steel pipe Tensile strength σ b (MPa): ≥980 yield strength σ s (MPa): ≥835 Elongation δ 5/(%): ≥12 Reduction of area ψ/(%): ≥40 Impact absorption energy (impact value) (aku2 / J): ≥ 39

Test method for mechanical properties

All seamless steel pipes shall be tested for mechanical properties. The testing methods of mechanical properties are mainly divided into two categories: tensile test and hardness test. Tensile test is to make seamless steel pipe into a sample, pull the sample to fracture on the tensile testing machine, and then measure one or several mechanical properties. Usually, only tensile strength, yield strength, elongation after fracture and reduction of area are measured. Hardness test is to slowly press a hard indenter into the sample surface according to the specified conditions, and then test the indentation depth or size, so as to determine the hardness of the material. Good machinability, medium cold deformation plasticity and weldability; In addition, the toughness of steel does not decrease much during heat treatment, but it has quite high strength and wear resistance, especially when water quenching; However, this steel is sensitive to white spot, temper brittleness and overheating sensitivity during heat treatment. Precautions for high magnification inspection of seamless steel pipe Precautions for high magnification inspection of seamless steel pipe mainly include the following points: 1. Depth and extent of surface decarburization. 2. Length and depth of surface rolling defects, shrinkage cavity, central segregation of carbon and sulfur. 3. Distribution of ferrite and pearlite in seamless steel pipe. 4. Other microstructure defects, as well as grain size, seamless pipe surface roughness and inclusion content.

A335 P11 A369 FP12 A213T11 alloy steel pipe

Products Details

Featured Products

Contact us