At the same time, the company operates a variety of products of related iron and ASTM A514 QT steel plate steel enterprises. Annual sales of steel 3.6 million tons, standing stock of 400000 tons, has developed more than 10000 users. The company has a first-class marketing service system, strong storage and transportation capacity and supporting supply, cutting distribution capacity, and gradually build it into an important marketing channel. The company has obtained ASTM A514 QT steel plate ISO9001:2000 quality system certification, A-level credit unit of the people's Bank of China, and is an excellent supplier of many large state-owned enterprises.
Normalizing process of S355J2 steel plate: normalize the S355J2 steel plate in the bottom furnace, normalizing temperature is 880-910℃, holding time is 1.8-2.2min/mm, that is to get the required S355J2 + N steel plate. 355j2 + N steel plate is mainly used in large machinery manufacturing, equipment base, large welded steel structure, construction, bridge and other fields. With the continuous development of economy and the large-scale demand of equipment, the demand of ultra thick ASTM A514 QT steel plate, S355J2 + N steel plate is increasing gradually.
Our SA516Gr70 pressure vessel plate has good impact resistance, small temperature deformation, good welding performance, good fatigue resistance, good anti-layered cracking performance, micro-alloying, high purity, low carbon equivalent, strong resistance to sulfur and hydrogen. The product has good dimensional tolerance and surface quality. China made ASTM A514 QT steel plate steel plates are now widely used in major chemical sites.
ASTM A514 QT steel plate annealing is to heat the steel to 30 ~ 50℃ above the critical temperature, keep it in the heat treatment furnace for a period of time, and then cool it down to room temperature with the furnace. The purpose of ASTM A514 QT steel plate annealing is to refine the grain of steel, eliminate internal stress and reduce hardness, improve cutting performance, increase toughness and plasticity, and facilitate welding and rolling processes. ASTM A514 QT steel plate annealing can be complete annealing, incomplete annealing, stress relief annealing, isothermal annealing and spheroidizing annealing.
Medium plate ASTM A514 QT steel plate products size: 5.5*2250*11550, 5*2200*10100, 5*1500*4500, 6*1750*13000, 5*2700*12050, 5*2700*12050, 6*1800*5500, 6*1550*6000, 9*2000*6000, 5.5*2600*10100, 5*2500*11000, 7*1800*10450, 6*3080*6000, 9*2000*9000, 5.5*2600*11850, 6*3320*5000, 9*1760*7800, 6*3370*4100, 9*2400*9800, 7*1970*7050, 6*3240*5400, 9*1800*10000, 6*3380*4800, 7*2120*6400 and 9*2400*8500.
Adhere to the spirit of quality first and user foremost, carry out maintenance and other work according to the requirements of the buyer's contract, and ensure that the engineering project and product after-sales play their application effectiveness. Our company guarantees to carry out self inspection and self supervision according to the quality management policy proposed by our company, and deliver a high-grade, perfect and excellent system engineering to users.
