1. Seamless steel tubes for structural purposes are seamless steel tubes for general structural and mechanical structures.
2. Seamless steel pipe for fluid transportation is a seamless steel pipe used to transport water, oil and gas.
3. The seamless steel tubes used for low medium pressure boilers are used to make hot and cold rolled seamless steel tubes of superheated steam pipes, boiling water pipes and locomotive boilers for all kinds of low medium pressure boilers, with superheated steam pipes and arch bricks.
4. The seamless steel pipe used for high pressure boiler is high quality carbon steel, alloy steel and stainless steel seamless steel tube used for the heating surface of water pipe boilers with high pressure and above pressure.
5. The high pressure seamless steel pipe used for chemical fertilizer equipment is high quality carbon structural steel and alloy steel seamless steel pipe suitable for chemical equipment and pipes with working temperature of -40~400 C and working pressure of 10~30Ma.
6. Seamless steel tubes for petroleum cracking are seamless tubes for furnace tubes, heat exchangers and pipes for petroleum refineries.
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