Over the years, the company has trained a number of professional sales talents, enriched the concept of various marketing and customer service, and strengthened the business strength of the company. Now the company's business KD40 hot rolled steel plate department, marketing department and information department constitute the market development network; the finance department, personnel department, logistics department, shipping department, document department and KD40 hot rolled steel plate after-sales service department constitute the service customer network.
SAE4340, same as UNS G43400. Tensile strength σb ≥980(100) Yield strength σs ≥835(85), used to manufacture important parts with high strength and good plasticity. After nitriding treatment, make important parts with special functional requirements, such as shafts, gears, and gears. Firmware etc. Delivery KD40 hot rolled steel plate in heat treatment (normalizing, annealing or high temperature tempering) or without heat treatment.
Q345B material is a low carbon alloy steel grade with good overall performance, low temperature performance, cold stamping performance, welding performance and machinability. Q345 serues steel is widely used in bridges, vehicles, ships, buildings, pressure vessels. Q represents the yield of this material, and the number 345 refers to the yield value of this material, which is around 345MPa. As the thickness of the material increases, its yield value decreases.
The preparation of KD40 hot rolled steel plate galvanized steel before welding is the same as that of ordinary low-carbon steel. It is necessary to carefully handle the groove size and nearby galvanized layer. In order to achieve penetration, the groove size shall be appropriate, generally 60 ~ 65 °, with a certain gap, generally 1.5 ~ 2.5mm; in order to reduce the penetration of zinc into the weld, the galvanized layer in the groove can be removed before welding. In the practical work, the centralized beveling, no blunt edge technology for KD40 hot rolled steel plate centralized control, two-layer welding process, reducing the possibility of incomplete penetration.
"Adopt standard specification: ASTM, JIS, EN, DINCategory: Structural Steel, carbon steel plate, KD40 hot rolled steel plate, hot rolled plateCarbon steel plate specification: Thickness: 1mm to 200mm; Width: 1500mm to 3500mm: Length: 3000mm to 27000mmThird Party Inspection: ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI or other quality department."
We should focus on the main problems to be solved and pay attention to efficiency. After receiving the user's quality objection report data, the possible causes, responsible units, compensation amount, etc. of the problem shall be judged based on experience. To have a clear service plan, to be clear about what your main problem is, what technical support is needed, these should be prepared.
Leave a Message