3pe Coating Seamless Steel Pipe

Process Category editor

1, plate units: the main production of heavy plate for LSAW pipe production, straight seam submerged arc welded pipe reliable quality, widely used in high-voltage transmission oil and gas trunk line.

2, Steckel Mill: Steckel mill comprises a reciprocating roughing mill and a finishing mill 4 rolls back and forth. In the finishing mill on both sides of the conveyor line installed two hot roll mill. Output roller typically comprises a laminar cooling system and a take-up station. On the Steckel mill, stainless steel stamping elbow pipe on the entire length of the thermo-mechanical history of significant changes, especially in the micro stainless steel stamping elbow pipe production, will strongly influence the degree of recrystallization generated on the finishing mill, grain growth and precipitation and cause dramatic changes in the entire length of stainless steel stamping elbow pipe final microstructure and properties

3, semi-continuous mill: Includes 1 rack Steckel mill and 5-stand finishing mill. In the semi-continuous rolling mill, pipe finishing passes in experienced hot-rolled from one end to the other end of the tube is substantially constant. On time passes between the finishing mill is generally less than 3s.

4, CSP continuous casting and rolling: in CSP production line of niobium, vanadium, titanium composite micro-alloyed low-carbon manganese steel containing, using appropriate controlled rolling and cooling and coiling process, you can ensure the mechanical properties and microstructure fittings Organization meets the technical requirements of modern X60 steel stamping elbow, in line with modern stainless steel stamping elbow fittings trends. Our CSP continuous casting and rolling production line has been developed to X60 steel stamping elbow pipe fittings, and other US and foreign CSP plant has developed and produced high-grade stainless steel stamping elbow pipe X60, X65 and the X70. Which process is characterized by the presence of thin slab casting center segregation, galvanized seamless steel thin slab to eliminate the central segregation is to further improve the quality of stainless steel stamping elbow pipe key technical issues, sheet steel stamping elbow 60 to 70 years using the main Anshan Iron and Steel and other manufacturers using A3,16Mn, along with pipeline diameter increase and improve delivery pressure tube plate strength can not meet demand. 80 years after each oil pipe factory started by the United States API standard production pipeline steel, because of the domestic stainless stamping elbow board manufacturing plant immature technology, mainly imported board.

Galvanized seamless steel galvanizing a very small, only 10-50g / m2, its own corrosion resistance than galvanized pipe a lot of difference. Regular galvanized pipe manufacturers, quasi-cold galvanized pipe for water and gas pipes. Cold galvanized steel galvanized layer is electroplated layer, individual layered zinc coating and steel substrate. Zinc layer is thin, simple zinc layer deposited on steel substrate easily. Therefore, its poor corrosion resistance. In the new house, prohibit the use of cold seamless steel pipe as water supply.