A403 covers the standard for wrought austenitic stainless steel fittings for pressure piping applications. The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products. Forging or shaping operations shall be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. All fittings shall undergo heat-treatment. Chemical and product analyses shall be performed and shall conform to the required chemical composition in carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and titanium. Tension test shall be done on the fitting material to determine the tensile properties such as yield strength and tensile strength. Fittings supplied under this specification shall be examined visually for surface discontinuities, surface checks, and mechanical marks. Company Profile From 1989 to now, Kingmetal Steel focus on manufacturing and distributing pipeline products including piping, fitting, flange, valve and fastener in stainless, carbon, alloy and duplex steel. Kingmetal has a factory to manufacture seamless stainless steel pipe from DN6 to DN600 and distribute seamless steel pipe and fitting from top brand manufacturers such as Baosteel, Hengsteel, Tiansteel and Pansteel etc. All of products are strictly compliance with standard, 100% inspection passed including visual, dimension and PMI test before shipment. Both our sales and logistic teams are over 10 years of experiences and training frequently. After- sales service with high efficiency, if any products are short quantity/weight or damaged caused by manufacturing, design or transportation can be compensated.
Why choose us? One-Stop Solution We have thousands of total production experience, from raw materials to finished products. Competitive Price Large scale purchase, standardized production process and efficient management make our price competitive. Quick Shipping Years of export experience enable us to control the transportation time more accurately. Quality Control The standardized production process, comprehensive management system, professional testing equipment Special material customization We support the customization of various complex materials OEM/ODM We support any form of OEM/ODM customization requirements.