Heater Basics Issue 0211 (Prizes for Correct Answers)
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1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in conditions of ( )； The design pressure shall not exceed ( ) MPa ； The operating temperature is the same as ( ). 2.GB151 stipulates that for designs with a design temperature of 300°C or higher, （ ） should be used for the pipe connection flanges; for heat exchangers in which exhaust and drainage cannot be carried out through pipes or connections, （ ） should be installed at the highest points of the tube side and shell side, and （ ） should be installed at the lowest points, with a minimum nominal diameter of （ ） mm. One point for each blank, seven blanks in total. This post was last edited by Lan Meng on 2009-2-10 16:55.]
Let’s start with the key parameters: extreme hazard level, 6.4 MPa, seamless steel pipes, butt-welded flanges, vent ports, liquid discharge ports, 20.
According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving extremely hazardous media； The design pressure is not greater than 6.4 MPa ； The operating temperature is the same as that of seamless pipes of the corresponding steel grade. GB151 stipulates that for designs with a design temperature of 300°C or higher, butt-welded flanges should be used for the connection fittings. For heat exchangers in which exhaust and drainage cannot be achieved through the connection fittings or interfaces, vent ports should be installed at the highest points of the tube side and shell side, and drain ports at the lowest points, with a minimum nominal diameter of 20 mm.
Hehe, the standard answer is out! 1. Extremely hazardous media ； 2. 6.4MPa ； 3. Seamless tube ； 4. Butt weld flange ； 5. Vent ； 6. Drain port ； 7. 20.
1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving (highly hazardous media)； The design pressure shall not exceed (6.4) MPa ； The operating temperature is the same as that of (seamless pipes of the corresponding steel grade). 2.GB151 stipulates that for designs with a design temperature of 300°C or higher, (butt weld flanges) shall be used for the connection flanges; for heat exchangers in which exhaust and drainage cannot be achieved through connections or interfaces, (vent ports) shall be installed at the highest points of the tube side and shell side, and (drain ports) shall be installed at the lowest points, with a minimum nominal diameter of (20) mm.
1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving extremely hazardous media； The design pressure is not greater than 6.4 MPa ； The operating temperature is the same as that of seamless pipes of the corresponding steel grade. 2. According to GB151, when the design temperature is 300°C or higher, butt-welded flanges should be used for the connection flanges. For heat exchangers in which exhaust and drainage cannot be carried out through connections or interfaces, vent ports should be installed at the highest points of the tube side and shell side, and drain ports at the lowest points, with a minimum nominal diameter of 20 mm.
le – Highly hazardous media; seamless pipes of corresponding steel grades at 6.4 MPa; butt weld flanges; vent ports; drain ports. Last edited by gzk1986 on 2009-2-10 at 18:08.]
1. Extremely hazardous media 6.4 Seamless pipes of corresponding steel grades 2. Butt-welded flanges, vent ports, drain ports 20
1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving (highly hazardous media)； The design pressure shall not exceed (6.4) MPa ； The operating temperature is the same as that of (seamless pipes of the corresponding steel grade). 2.GB151 stipulates that for designs with a design temperature of 300°C or higher, (butt-welded flanges) shall be used for the connection flanges; for heat exchangers in which exhaust and drainage cannot be achieved through connections or interfaces, (vent ports) shall be installed at the highest points of the tube side and shell side, and (drain ports) shall be installed at the lowest points, with a minimum nominal diameter of (20) mm.
1. Highly hazardous medium 2. 6.4 MPa 3. Seamless steel pipe 4. Butt-welded flange 5. Vent port 6. Drain port 7. 20
Extreme hazard, 6.4MPA, seamless steel pipe, butt-welded flange, vent, drain, 20
1. Seamless pipes for highly hazardous media, 6.4 Mpa, corresponding steel grades; 2. Butt-welded flanges, vent ports, drain ports, 20
According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving extremely hazardous media； The design pressure is not greater than 6.4 MPa ； The operating temperature is the same as that of seamless pipes of the corresponding steel grade. GB151 stipulates that for designs with a design temperature of 300°C or higher, butt-welded flanges should be used for the connection fittings. For heat exchangers in which exhaust and drainage cannot be achieved through the connection fittings or interfaces, vent ports should be installed at the highest points of the tube side and shell side, and drain ports at the lowest points, with a minimum nominal diameter of 20 mm.
1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving (highly hazardous) media； The design pressure shall not exceed (6.4 MPa) MPa ； The operating temperature is the same as that of (seamless pipes). 2.GB151 stipulates that for designs with a design temperature of 300°C or higher, (butt-welded flanges) shall be used for the connection flanges; for heat exchangers in which exhaust and drainage cannot be achieved through connections or interfaces, (vent ports) shall be installed at the highest points of the tube side and shell side, and (drain ports) shall be installed at the lowest points, with a minimum nominal diameter of (20) mm.
1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in conditions involving (extreme hazards)； The design pressure shall not exceed (6.4) MPa ； The operating temperature is the same as that of (seamless steel pipes). 2.GB151 stipulates that for designs with a design temperature of 300°C or higher, the pipe flanges shall use (long-neck butt welding); for heat exchangers in which exhaust and drainage cannot be carried out through pipes or connections, (vent ports) shall be installed at the highest points of the tube side and shell side, and (drain ports) shall be installed at the lowest points, with a minimum nominal diameter of (20) mm.
1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in conditions that are (extremely hazardous)； The design pressure shall not exceed (6.4) MPa ； The operating temperature is the same as that of (seamless steel pipes). 2.GB151 stipulates that for designs with a design temperature of 300°C or higher, (butt-welded flanges) shall be used for the connection flanges; for heat exchangers in which exhaust and drainage cannot be achieved through connections or interfaces, (vent ports) shall be installed at the highest points of the tube side and shell side, and (drain ports) shall be installed at the lowest points, with a minimum nominal diameter of (20) mm.
1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving (highly hazardous media)； The design pressure shall not exceed (6.4) MPa ； The operating temperature is the same as that of (seamless pipes of the corresponding steel grade). 2.GB151 stipulates that for designs with a design temperature of 300°C or higher, (butt weld flanges) shall be used for the connection flanges; for heat exchangers in which exhaust and drainage cannot be achieved through connections or interfaces, (vent ports) shall be installed at the highest points of the tube side and shell side, and (drain ports) shall be installed at the lowest points, with a minimum nominal diameter of (20) mm.
The answers are as follows: 1. Extremely hazardous medium； 2. 6.4MPa ； 3. Seamless tube ； 4. Butt weld flange ； 5. Vent ； 6. Drain port ； 7. 20.
1. According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving (highly hazardous media)； The design pressure shall not exceed (6.4) MPa ； The operating temperature is the same as that of (seamless pipes of the corresponding steel grade). 2.GB151 stipulates that for designs with a design temperature of 300°C or higher, (butt weld flanges) shall be used for the connection flanges; for heat exchangers in which exhaust and drainage cannot be achieved through connections or interfaces, (vent ports) shall be installed at the highest points of the tube side and shell side, and (drain ports) shall be installed at the lowest points, with a minimum nominal diameter of (20) mm.
1. Highly hazardous media, 6.4, seamless pipes of corresponding steel grades 2. Butt weld flanges, vent ports, drain ports, 20
According to GB151, austenitic stainless steel welded pipes that meet the requirements of these regulations can be used as heat exchange tubes, but they shall not be used in applications involving extremely hazardous media； The design pressure is not greater than 6.4 MPa ； The operating temperature is the same as that of seamless pipes of the corresponding steel grade. GB151 stipulates that for designs with a design temperature of 300°C or higher, butt-welded flanges should be used for the connection fittings. For heat exchangers in which exhaust and drainage cannot be achieved through the connection fittings or interfaces, vent ports should be installed at the highest points of the tube side and shell side, and drain ports at the lowest points, with a minimum nominal diameter of 20 mm.