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Seamless steel tube standard

更新日期:2013-09-04  浏览:1474

Standard: seamless steel tube is a hollow section, no seams around the strip steel. Steel pipe is hollow section, a large number of pipeline used for conveying fluid, such as oil, natural gas, coal gas, water and some solid materials, such as pipelines. Compared to the steel pipe and round steel solid steel bending torsional strength phase at the same time, the weight is lighter, is a kind of economic cross section steel, widely used in the manufacture of structural and mechanical parts, such as petroleum drill pipe, auto transmission shaft, bicycle frame and construction of steel scaffolding is used. With steel pipe manufacturing annular parts, can improve material utilization, simplifying the manufacturing process, material saving and processing time, such as rolling bearing ring, jack sets, at present has been widely made from steel pipe. Steel pipe is the indispensable materials, all kinds of conventional weapons barrel, gun barrel to steel pipe manufacturing. Steel pipe according to the cross-sectional area in the shape of different can be divided into circular tube and special pipe. Due to equal under the condition of the circumference, circle area is the largest, with circular tube can deliver more fluid. In addition, uniformly cooled the circle cross section under radial pressure, the internal or external stress is relatively uniform, therefore, the vast majority of steel tube is round tube.

But, pipe also has some limitations, such as in the plane bending condition, the pipe is not square, rectangular tube bending strength is big, some agricultural machinery and skeleton, rectangular tube, steel wood furniture is commonly used. According to the different USES should also have other cross section shape of profiled steel pipe.

1. The structure with seamless steel tube (GB/T8162-1999) is used for general structure and the mechanical structure of seamless steel tube.

2. Fluid with seamless steel tube transmission (GB/T8163-1999) is used for conveying water, oil, gas and other fluid general seamless steel tube.

3. Low medium pressure boiler seamless steel tube (GB3087-1999) is used in the manufacture of various structural low intermediate pressure boiler superheated steam pipe, water pipe and locomotive boiler superheated steam pipe, pipes, small pipe and arch brick works of high quality carbon structural steel hot rolling and cold drawing (rolling) seamless steel tube.

4. High pressure boiler seamless steel tube (GB5310-1995) is used in the manufacture of high pressure and over pressure of the water tube boiler heating surface quality carbon steel, alloy steel and stainless steel seamless steel tube.

5. Fertilizer equipment with high-pressure seamless steel tube (GB6479-2000) is applicable to the working temperature for - 40 ~ 400 ℃, the working pressure of 10 ~ 30 ma chemical equipment and pipeline of high quality carbon structural steel and alloy steel seamless steel tube.

6. Seamless steel tube used in oil cracking (GB9948-88) is suitable for oil refinery furnace tube, heat exchangers and pipe seamless steel pipe.

7. Geological drilling with steel tube (YB235-70) is for the use of geological departments the core drilling of steel pipe, according to the purpose can be divided into the drill pipe, drill collar, core pipe, casing and precipitation, etc.

8. Diamond core drilling with seamless steel tube (GB3423-82) is used for diamond core drill pipe, core rod, casing of seamless steel tube.

9. The oil drill pipe (YB528-65) is used in oil drilling at both ends of seamless steel tube with thick or external upset. Pole points two kinds of cars and car silk, silk work joint connection, no car work butt welding method and the tool joint connection.

10. Ship with carbon steel seamless steel tube (GB5213-85) is the manufacturing of ship class I pressure piping, pressure piping Ⅱ, boiler and overheating for carbon steel seamless steel tube. Carbon steel seamless steel tube wall temperature does not exceed 450 ℃, the alloy steel seamless steel tube wall temperature over 450 ℃.

11. Automobile axle works seamless steel tube (GB3088-82) is the manufacturing automotive axle tube and shell shaft drive axle bridge works of high quality carbon structural steel and alloy structural steel hot-rolled seamless steel tube.

12. The diesel engine with high-pressure tubing (GB3093-2002) is a manufacturer of diesel injection system high pressure work cold drawn seamless steel tube.

13. The hydraulic and pneumatic cylinder with precision inner diameter seamless steel tube (GB8713-88) is used in manufacture of hydraulic and pneumatic cylinder is precision cold drawn or cold rolled precision seamless steel tube diameter.

14. Cold drawn or cold rolled precision seamless steel tube (GB3639-2000) is used in the mechanical structure, hydraulic equipment of high dimensional accuracy and surface finish good cold drawn or cold rolled precision seamless steel tube.

Choose precision seamless steel tube manufacturing mechanical structure or hydraulic equipment, etc., can greatly save the machining time, improve material utilization, at the same time to improve the quality of the product.

15. The structure with stainless steel seamless steel tube (GB/T14975-2002) is widely used in chemical industry, petroleum, textile, medical, food, machinery and other industrial corrosion of pipeline and components and parts are made of stainless steel hot rolling (crowded, expanding) and cold drawing (rolling) seamless steel tube.

16. The fluid conveying stainless steel seamless steel tube (GB/T14976-2002) is used for conveying fluid made of stainless steel hot rolling (crowded, expanding) and cold drawing (rolling) seamless steel tube.

17. Heterotypic seamless steel tube is in addition to the outside of the pipe cross section shape of the floorboard of the seamless steel tube. According to the size of steel pipe cross section shape is different and can be divided into such as wall thickness seamless steel tube (code-named D), ranging from wall thickness seamless steel tube (code-named BD), variable diameter seamless steel tube (code-named BJ). Alien seamless steel tube is widely used in all kinds of parts, tools and machinery parts. Compared with those of circular tube section tube usually have large moment of inertia, carbon steel elbow and section modulus, have bigger bending torsional capacity, can greatly reduce the structure weight, save steel.

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