Description
The Hubbed Slip-On Welding Flange complying with ASME B16.5 standard produced by Hebei Hexin Pipe Fitting Co., Ltd. is of size NPS 1-1/2", pressure class Class150, raised face (RF) sealing surface, A105 carbon steel material, and welded connection. Detailed product introduction is as follows:
Raw Materials
Adopts A105 carbon steel forgings meeting ASME/SA standards. A105 is a medium-strength carbon steel forging with excellent plasticity and toughness, which is widely used in pressure pipeline components under normal and medium temperature working conditions.
Production Process
1. Forging: Die forging process is adopted. A105 steel billets are heated and forged into hubbed flange blanks to ensure continuous metal flow lines, dense microstructure and superior mechanical properties.
2. Heat Treatment: Normalizing treatment is carried out to homogenize microstructure, refine grains, eliminate forging stress and improve comprehensive mechanical properties of materials.
3. Machining: Processing is performed with high-precision CNC lathes, milling machines and drilling machines. The outer diameter, inner diameter, thickness, neck size, sealing surface (water lines/tooth profiles shall be turned on RF face), bolt circle diameter and hole spacing of flanges are processed in strict accordance with ASME B16.5 standard to guarantee qualified dimensional tolerance and surface finish.
4. Surface Treatment: Sand blasting or shot blasting is conducted to remove oxide scales, followed by anti-rust oil coating or other anti-corrosion treatments as per customer requirements.
5. Quality Inspection: Strict dimensional inspection, visual inspection, material spectral analysis and hardness testing are implemented. Non-destructive testing (such as ultrasonic testing or magnetic particle testing) will be carried out when necessary to ensure products fully meet ASME B16.5 standard and customer specifications.
6. Marking & Packaging: Steel stamp marking is performed in compliance with standard requirements (including standard number, material grade, pressure class, size, heat treatment mark, etc.). Anti-rust packaging is adopted to ensure safe transportation.
Application Fields
It is widely applied to pipeline systems in petroleum, natural gas, chemical engineering, electric power, shipbuilding, ocean engineering and other industries for connecting pipelines, valves, pumps and equipment. It is especially suitable for American regional projects complying with ASME codes, international EPC projects and domestic high-end equipment manufacturing sectors.
Temperature and Pressure Resistance Performance
- Temperature Resistance Range: A105 material is applicable to working conditions from -20°C to +400°C (the allowable specific temperature shall refer to the pressure-temperature ratings in ASME B16.34). Attention shall be paid to the impact toughness of the material in low-temperature environments.
- Pressure Resistance Class: Class150 is a pressure class of the American standard system. Its maximum allowable working pressure is not fixed and varies with temperature. At the temperature of -20°C to 38°C (100°F), the maximum allowable working pressure of Class150 flange made of A105 material is approximately 19.6 bar (about 285 psi). Users must select appropriate pressure classes for specific working conditions strictly according to the pressure-temperature rating tables in the appendix of ASME B16.5 standard.
Advantages of Hebei Hexin Pipe Fitting Co., Ltd.
1. International Standard Certification: The company is familiar with and strictly produces in accordance with international standards including ASME B16.5. Its products meet certification requirements such as API and ISO with qualified export qualifications.
2. Material and Process Guarantee: Qualified raw materials and advanced forging plus CNC machining technologies are adopted to ensure precise product dimensions, stable performance and reliable sealing.
3. Complete Quality System: A full-process quality control system from raw material warehousing to finished product delivery has been established, equipped with advanced testing equipment to achieve full traceability of each product.
4. Global Market Service: The company can quickly respond to demands of global customers from America, the Middle East, Southeast Asia and other regions, and provide technical support as well as complete document packages (such as material certificates and inspection reports).
5. Wide Specification Range: It can manufacture ASME B16.5 flanges in various sizes, pressure classes and materials, and support non-standard customization.
Production Specification Range (for reference only, subject to actual inquiry)
- Standards: ASME B16.5, ASME B16.47, MSS SP-44, etc.
- Types: SO (Slip-On Welding), WN (Welding Neck), SW (Socket Welding), BL (Blind), LJ (Lap Joint), TH (Threaded), etc.
- Nominal Pipe Size (NPS): 1/2" to 24" (B16.5); larger sizes are available per B16.47 standard.
- Pressure Classes (Class): Class150, Class300, Class600, Class900, Class1500, Class2500.
- Sealing Surfaces: RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint).
- Materials: Carbon steel (A105, A350 LF2), stainless steel (304/304L, 316/316L, 321, 347), alloy steel (F11, F22, F91), duplex steel, nickel-based alloy, etc.
