1.结构用无 )是用于一般结构和机械结构的无缝钢管。2.流体输送用无

1. Structure-free) is a seamless steel pipe for general structure and the mechanical structure. <br>No 2 fluid) is generally seamless steel pipe for conveying water, oil, gas and other fluids. <br>3. A low-pressure boiler for the manufacture of seamless steel tubes of various structures low-pressure boiler tubes superheated steam, boiling water pipes and superheated steam locomotive boiler tubes, opium pipe, small pipe and arch brick of high quality carbon structural steel and cold drawn (rolled) seamless steel pipe. <br>4. The high-pressure boiler quality carbon steel seamless steel pipe (GB5310-1995) for producing a high-pressure heating surface and more pressure water tube boiler, heat-resistant alloy and stainless steel seamless pipe. <br>The fertilizer equipment is suitable for the operating temperature of -40 ~ 400 ℃, working pressure of high-carbon steel and alloy steel chemical equipment and piping of seamless steel pipe 10 ~ 30Ma. <br>6. The oil is suitable for cracking petroleum refinery furnace tubes, heat exchangers, and seamless steel pipes. <br>7. geological drilling pipe (YB235-70) is for geological department of the steel core drilling, use can be divided into the drill pipe, drill collar, core pipe, casing and precipitation tubes.

1. Structure with no ) is a seamless steel pipe for general structure and mechanical structure.<br>2. Fluid transport withno ) is used to transport water, oil, gas and other fluids of the general seamless steel pipe.<br>3. Seamless steel pipe for low medium pressure boilerist is a high-quality carbon structure steel hot-rolled and cold-pulled (rolled) seamless steel pipe for the manufacture of high-quality carbon structure for high-quality medium-pressure boilers, boiling pipes and locomotive boilers for overheated steam pipes, large smoke pipes, small pipes and arch brick tubes.<br>4. Seamless steel pipe (GB5310-1995) for high-pressure boilers is a high-quality carbon steel, alloy steel and rust-free heat-resistant steel steel for the heating surface of a pipe boiler for high pressure and above pressure.<br>5. Fertilizer equipment is suitable for high-quality carbon structure steel and alloy steel seamless steel pipe with operating temperature of -40 to 400 degrees C and working pressure of 10 to 30Ma for chemical equipment and pipes. <br>6. Oil cracking is suitable for oil refinery furnace pipes, heat exchangers and pipe seamless steel pipes.<br>7. The steel pipe for geological drilling (YB235-70) is the steel pipe used for core drilling by the geological department, which can be divided into drill pipe, drill collar, core tube, casing and sediment pipe according to the use.

1. For structure) is a seamless steel pipe for general structure and mechanical structure.<br>2. No for fluid transportation) is a general seamless steel pipe used to transport water, oil, gas and other fluids.<br>3. Seamless steel tubes for low and medium pressure boilers are high-quality carbon structural steel hot-rolled and cold drawn (rolled) seamless steel tubes used to manufacture superheated steam tubes, boiling water tubes, superheated steam tubes, large smoke tubes, small smoke tubes and arch brick tubes for various structures of low and medium pressure boilers.<br>4. Seamless steel tube for high pressure boiler (GB5310-1995) is a high-quality carbon steel, alloy steel and stainless heat-resistant steel seamless steel tube used for the heating surface of water tube boiler with high pressure and above.<br>5. The chemical fertilizer equipment is made of high-quality carbon structural steel and alloy steel seamless steel pipe suitable for chemical equipment and pipeline with working temperature of - 40 ~ 400 ℃ and working pressure of 10 ~ 30 ma.  <br>6. For petroleum cracking, it is the seamless steel tube for furnace tube, heat exchanger and pipeline of petroleum refinery.<br>7. The steel pipe for geological drilling (yb235-70) is a steel pipe for geological department to drill core. It can be divided into drill pipe, drill collar, core pipe, casing and settling pipe according to its use.<br>