Products: A105 Welded Neck RF 4" 300# SCH80 Flanges according to ASME B16.5
1, Product standards
This product is strictly produced in accordance with mainstream domestic and international standards, ensuring dimensional accuracy and technical requirements are in line with international standards. It is suitable for installation standards in different countries and industries. The core implementation standards include: domestic standards GB/T 9112-2010 "Types and Parameters of Steel Pipe Flanges", GB/T 9124.1-2019 "Steel Pipe Flanges Part 1: PN Series" HG/T 20592-2009,HG/T 20615-2009; International standards such as ASME B16.5, ASME B16.47, DIN2630-DIN2638, EN 1092-1, etc. can also be customized and produced according to customer needs based on group standards T/ACCEMXXXX-2024 and industry standards such as JB and SY. All products comply with the relevant requirements of the standards regarding appearance quality, dimensional tolerances, pressure temperature ratings, ensuring product universality and reliability.A105 Welded Neck RF 4" 300# SCH80 Flanges according to ASME B16.5
2, Material and Steel Grade
The product materials cover three categories: carbon steel, stainless steel, and alloy steel, which can be flexibly selected according to the pressure, temperature, and medium characteristics of the usage scenario. The corresponding steel grades and material details are as follows:
-Carbon steel material: mainly includes 20 #, A105 (steel grade A105), 16Mn, SS400, SF440, RST37.2, S235JRG2, P250GH, C22.8, etc. The steel grade corresponds to national standards GB/T 700, American standards ASTM A105, etc. It has high cost-effectiveness and is suitable for medium and low pressure, room temperature working conditions. It is widely used in ordinary industrial pipelines.
-Stainless steel material: covering F304/304L,F316/316L,F316Ti,F321,F317L,S31803(F51),S31254(F44),S32750(F53),S32760(F55) The steel grade corresponds to ASTM A182 and has excellent corrosion resistance and high temperature resistance, suitable for corrosive media, high temperature and high pressure, and low temperature working conditions, such as chemical, food, pharmaceutical and other industries.
-Alloy steel material: mainly includes ASTM A182 F9, F11, F12, F22, F91, etc. The steel grade corresponds to different alloy contents and has high strength, high temperature resistance, and creep resistance. It is suitable for connecting core equipment such as power, boilers, and petrochemicals in ultra-high temperature and ultra-high pressure pipeline systems.A105 Welded Neck RF 4" 300# SCH80 Flanges according to ASME B16.5
3, Application scenarios
Due to its high structural strength and good sealing performance, butt welded neck flanges are suitable for pipeline systems with significant pressure or temperature fluctuations, high temperature, high pressure, and low temperature. The core application scenarios include: connecting crude oil, natural gas, chemical medium transportation pipelines and reactors, and heat exchangers in the petrochemical industry; Boiler and turbine piping systems in the power industry; High temperature flue gas and steam pipelines in the metallurgical industry; Corrosion resistant pipeline connections in the pharmaceutical and food industries; High pressure water and gas pipelines in municipal engineering, as well as pipelines for transporting flammable, explosive, highly toxic and other high-risk media, are the preferred connecting components for key projects that require extremely high safety and service life.
4, Export packaging
To ensure that the product is not damaged during long-distance transportation and export, a packaging scheme that meets international export standards is adopted. Specifically, each flange is coated with anti rust oil and wrapped in plastic film to prevent rust and scratches during transportation; Batch products are packaged in non fumigated or fumigated wooden pallets/boxes, with anti slip pads installed at the bottom of the pallets and secured with steel straps to prevent shaking during transportation; The product name, model, material, quantity, gross weight, net weight, destination, and warning signs should be clearly marked on the outside of the packaging. Relevant documents such as product certificate, material certificate, and inspection report should also be attached to adapt to container transportation and meet the import packaging requirements of different countries, ensuring that the product is delivered to customers in good condition.
5, Model and specifications
The product models are divided according to nominal diameter, nominal pressure, and sealing surface type, covering multiple specifications to meet the requirements of different pipeline sizes and working conditions: the nominal diameter range is 1/2 "~160" (DN15~DN4000), and the nominal pressure levels include PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN250, PN320, PN400 and American Class 150, 300, 600, 900, 1500, 2500; The sealing surface types include protruding surface (RF), flat surface (FF), concave convex surface (MF), mortise and tenon surface (TG), O-ring surface (OSG), ring connection surface (RJ), etc. Special specifications of flanges can be customized according to customer needs, with dimensional tolerances in accordance with the relevant provisions of GB/T 1804-2000 Rough Class C and GB/T 9124.1-2019. The theoretical weight range is 0.36kg~234.6kg (DN1800), suitable for different specifications of pipeline connections.
This product is produced using forging, casting and other processes, and undergoes strict ultrasonic and radiographic testing to ensure no defects such as cracks or pores. The surface of the product can be treated with anti rust oil, anti rust paint, hot-dip galvanizing and other treatments according to demand, which combines practicality and durability, and can meet the pipeline connection needs of various industrial scenarios at home and abroad.
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