20mnG high-pressure boiler tubes are high-quality carbon structural steels. Characteristics and scope of application: high-manganese, low-carbon permeable steel, with properties similar to 15Mn steel. Low carbon carburizing steel with higher manganese content (W mn 0.70%-1.00%). Due to its high manganese content, its strength, plasticity, machinability and hardenability are slightly higher than those of 15 steel. Surface formation occurs during carburizing and quenching. There are few soft spots, so it is suitable to carry out carburizing and carbonitriding treatment to obtain the comprehensive performance of surface wear resistance and good core toughness. Good toughness after hot rolling or normalizing treatment.
20mnG boiler tubes comply with the national standard GB5310 and are used for medium and low pressure boiler tubes, high pressure boiler tubes, special tubes for fertilizers, heating surface tubes of petroleum cracking tubes, economizers, superheaters, and reheaters.
Chemical composition of 20mnG steel pipe:
Carbon C: {{0}}.17~0.24, Silicon Si: 0.17~0.37, Manganese Mn: 0.7~1.00, Phosphorus P: Less than or equal to 0.03, Sulfur S: Less than or equal to 0.03, Chromium Cr: Less than or equal to 0.15, Nickel Ni: Less than or equal to 0.25, Copper Cu: Less than or equal to 0.20
Tensile strength Greater than or equal to 415MPa, yield limit Greater than or equal to 240MPa, elongation Greater than or equal to 22%.
Structural seamless pipe 20mnG
Manufacture:Seamless process ,Hot-finished or Cold-finished
Wall thickness(WT): 2.8 mm--150 mm.
Outer diameter (OD): 23 mm--1500 mm
Length: 6M or specified length as required.
Heat treatment for GB 5310 20MnG Boiler Tubes
| 20MnG | 880 degree -940 degree ,Normalizing |
gnee has self-operated import and export rights and produces qualified products such as Chinese GB, American ASTN (ASME), German DIN, Japanese JIS standards, British BS standards, etc., which are widely used in petroleum, chemical industry, electric power, boilers, ships, machinery and other industries.
1.Q.Are you a manufacturer?
A.Yes, we are a manufacturer and a well-known company with an early start in China's steel industry.
2.Q: What product information do I need to provide?
3.Q. Do you have a quality control system?
תגיות פופולריות: gb 5310 20mng high pressure carbon steel pipe, China gb 5310 20mng high pressure carbon steel pipe manufacturers, suppliers, factory
