
After comprehensive and professional training such as customer service, the customer service team has more strict discipline in the management of customer service team to ensure that customer service personnel respond to customers with a professional attitude. A process supervision system has been set up to let each customer supervise the process of the system with us
Compared with seamless pipe, galvanized pipe and other steel, welded pipe has some outstanding characteristics. First of all, it is very simple to judge whether there is weld on the steel surface. Because the welded pipe is made by welding, it has obvious characteristics. Secondly, the diameter of welded pipe is generally large, and the diameter of seamless pipe and galvanized pipe is relatively small. Therefore, EN10025-2 S355J2 quality, welded pipe is generally used in underground pipeline to transport water, gas, air, oil and heating steam with low pressure.
Mechanical properties of 45# steel high-quality carbon structural steel: Tensile strength σb (MPa): ≥600, yield strength σs (MPa): ≥355, elongation δ5 (%): ≥16, section shrinkage ψ (%): ≥40, impact energy Akv (J): ≥39. 45# steel impact toughness value αkv (J / cm2): ≥49 (5), hardness: unheated, ≤229HB; annealed steel, ≤197HB. EN10025-2 S355J2 quality, 45# steel chemical composition % (Carbon: 0.42 to 0.50, Silicon: ≤0.40, Manganese: 0.50 to 0.80, Sulfur: ≤0.045, Phosphorus: ≤0.045, Chromium: ≤0.40, Nickel: ≤0.40, Molybdenum: ≤0.10).
Compared with EN10025-2 S355J2 quality, pressure vessel and boiler steel plates have such advantages: The pressure vessel and boiler steel should be pure, and the fracture structure of the boiler steel plate should be uniform without cracks and inclusions. Besides, the strain aging sensitivity is small, and the strain aging impact value of the pressure vessel and boiler steel plate is required to be no less than 50% of the non-aging impact value. That is why pressure vessel and boiler steel plate is first choice for fabricating pressure vessels and boilers, while EN10025-2 S355J2 quality is not.
Respect customers and treat each other sincerely. Customers are always right. Always remember that the user is the God of the enterprise, respect the customer, and accept the customer's opinion modestly is the guarantee of the long-term development of the enterprise. Adhere to this concept, so that the service and the product are the same, long-term.
It is a modern high-tech professional enterprise integrating scientific research, EN10025-2 S355J2 quality production and sales. The company is mainly engaged in the manufacture, installation and commissioning of boiler and pressure vessel, chemical, metallurgical, petroleum and other equipment, as well as EN10025-2 S355J2 quality process technology development, technology transfer and related technical consulting and technical services.
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