The standard and scope of use of Stainless steel seamless tube

The standard and scope of use of Stainless steel seamless tube

The stainless steel seamless tubes is divided into hot rolled (extruded) seamless tubes and cold drawn (rolled) seamless tubes due to different manufacturing processes. Cold drawn (rolled) tube can be subdivided into circular tube and special-shaped tube. Seamless steel tubes are divided into the following varieties according to their different USES:

1. GB/T8162-1999 (structural seamless steel tube)   This kind of tubes are mainly used in general structure and mechanical structure. Its representative material (brand) : carbon steel, 20#, 45# steel; Alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.

2. GB/T8163-1999 (seamless steel tubes for fluid transportation) This kind of tubes are mainly used for conveying fluid in projects and large equipment. The representative material (brand) is 20, Q345, etc.

3. GB3087-1999 (seamless steel tubes for low-medium pressure boiler) This is a kind of high quality carbon structural steel hot-rolled and cold-drawn (rolled) seamless steel tubes used for manufacturing superheated steam tubes for low-medium pressure boiler, boiling water tubes, tubes for locomotive boiler, large smoke tubes, small smoke tubes and arch tubes. The representative material is 10, 20 steel.

4. GB5310-1995 (seamless steel tubes for high pressure boilers) This kind of tubes are a seamless steel tubes made of high quality carbon steel, alloy steel and stainless steel which are used for the heating surface of water boilers with high pressure and above. The representative material is 20G, 12Cr1MoVG, 15CrMoG, etc.

5. GB1479-2000 (seamless stainless steel tubes for high pressure chemical fertilizer equipment) This kind of tubes, made of high quality carbon structural steel and alloy steel seamless steel, are applicable to chemical equipment and pipelines with working temperature for - 40 ~ 400 ℃ and working pressure of 10 ~ 30 ma. The representative materials are 20, 16Mn, 12CrMo, 12Cr2Mo, etc.

6. GB9948-1988 (seamless steel tubes for oil cracking) This kind of tubes are mainly used for the boiler in petroleum smelting plant, heat exchanger and fluid tubes. Its representative material is 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on.

7. Steel tubes for geological drilling (YB235-70) This kind of tubes are for core drilling in the geological department. It can be divided into drill tube, drill collar, core barrel, drive pipe and sediment tube.

8. Seamless steel tubes for drilling diamond cores (GB3423-82) this kind of tubes are seamless stainless steel tubes used as drill tube, core barrier, and drive pipe for drilling diamond cores.

9. Oil drilling tubes (YB528-65) this kind of tubes are used for oil drilling with inner or outer thickening. There are two types of steel tubes: threaded and unthreaded. Joint connection is used for threaded tubes and welding is used for unthreaded tubes.

10. GB5312-1999 (carbon steel and carbon manganese steel seamless steel tube used for shipbuilding) this kind of carbon steel seamless steel tube are to make the ship class I pressure tubes, Ⅱ pressure tubes, boiler and superheater. The wall temperature of carbon steel seamless steel tube cannot exceed 450 ℃, that of the alloy steel seamless steel tube can be over 450 ℃. The representative material is 360, 410, 460 steel grade and so on.

11. Seamless steel tube as automotive axle housing tube(GB3088-82) this kind of tubes are hot-rolled seamless steel tube made of high quality carbon structural steel and alloy structural steel, which is used for manufacturing automotive axle housing tube and axle housing tube of drive axle.

12. High-pressure tubes for diesel engine (GB3093-86) This kind of tubes are cold-drawn seamless steel tubes used as the high-pressure tubes of diesel engine injection system.

13. Precision seamless steel tubes for hydraulic and pneumatic cylinders (GB8713-88) This kind of tubes are precision seamless steel tubes for cold drawing or cold rolling with precise inner diameter for the manufacture of hydraulic and pneumatic cylinders.

14. Cold drawn or cold rolled precision seamless steel tubes (GB3639-83) This kind of tubes are used for mechanical structure and hydraulic equipment with high dimensional accuracy and good surface finish. Using precision seamless steel tubes to manufacture mechanical structure or hydraulic equipment can greatly save machining time, improve material utilization rate and improve product quality.

15. Structural seamless stainless steel tubes (GB/T14975-1994) This kind of tubes are hot-rolled (extruded, expanded) and cold-drawn (rolled) seamless steel tubes, which are widely used in chemical industry, petroleum industry, textile industry, medical industry, food industry, machinery industry and other industries.

GTW is a professional stainless steel tubes manufacturer, constantly supplying various specifications of stainless steel tubes, stainless steel plate, stainless steel rods, stainless steel,   stainless steel seamless tube, stainless steel square tube, stainless steel shaped tube, stainless steel flat steel, stainless steel Angle steel, stainless steel round steel products. GTW is also the sales representatives of TISCO, Baosteel, Shanghai Steel Plant, Zhangpu steel, Denggeng steel, JISCO, Lianzhong and other well-known imported stainless steel. GTW is now a major supplier of large domestic die development companies, military enterprises, machinery processing plants and automobile manufacturing industries.