The production method of seamless steel pipe can be roughly divided into cross rolling method (menesmann method) and extrusion method. The cross rolling method (menesmann method) is to pierce the tube blank with the cross roll first, and then extend it with the rolling mill. This method is fast in production, but requires high machinability of tube blank. It is mainly suitable for producing carbon steel and low alloy steel tube, P275N equivalent asme tube.
According to the market forecast released by Eurofer on August 5, the output of all P275N equivalent asme steel consumption industries in the European Union will drop by 12.8% in 2020, and rise by 8.9% in 2021. However, the European Union said that the government's "awesome strength" support will reduce the P275N equivalent asme steel consumption intensity in the construction industry significantly less than other industries.
P275N equivalent asme, 15MnNiDR steel plate with thickness greater than 20 mm shall be delivered under normalizing or normalizing plus tempering condition; 15MnNiDR steel plate with thickness greater than 16 mm shall be delivered under quenching plus tempering condition; each steel plate shall be subject to ultrasonic testing, and each steel plate with other thickness can also be subject to ultrasonic testing after negotiation between the supplier and the demander, and the testing method shall be in accordance with JB/T4730.3 or GB/T2970.
Accept the inquiry from the owner of the goods and the inquiry by sea: master the port and price from the port of shipment to all continents and routes, and the port and price that the owner often needs to serve; the shipping schedule information of the main shipping companies; when necessary, ask the owner of the inquiry for some category information, such as the name of the goods, the level of danger, etc. (water hazard code).