ASTM A694 F42 Flange

The ASTM A694 F42 Flange supplied by Zhengzhou Huitong Pipe Fitting Company is a forged carbon steel pressure-containing component rated for F42 yield strength class, manufactured in Zhengzhou, Henan Province, China. The F42 designation specifies minimum yield strength of 42 ksi (290 MPa), positioning this grade at the lower end of the ASTM A694 spectrum suitable for moderate-pressure pipeline service. Available configurations include weld neck, blind, slip-on, and socket weld types, with the forged construction providing grain flow alignment that enhances fatigue resistance compared to cast alternatives. The supplier targets oil and gas, petrochemical, and general process plant applications where code-compliant flange connections are required.

Forged construction from ASTM A694 Grade F42 material ensures homogeneous microstructure and consistent mechanical properties through controlled deformation below recrystallisation temperature. The grade's carbon-manganese chemistry permits welding to matching and lower-strength pipeline steels without excessive preheat requirements, though specific welding consumables and procedures must align with project WPS/PQR qualifications. Surface finish and facing are typically supplied with 125-250 AARH serrated finish for spiral-wound gasket compatibility, though buyers should confirm facing type, ring groove machining for RTJ flanges, and coating specifications if hydrocarbon service or subsea application is intended. Corrosion resistance relies on external coating systems or alloy cladding rather than inherent material properties.

Primary buyers include pipeline construction contractors, refinery maintenance organisations, and process skid fabricators requiring forged flanges in standardised dimensions per ASME B16.5 or B16.47 Series A. The F42 grade serves lower-pressure classes within high-pressure systems, often as companion flanges to lower-grade pipe or in utility and secondary process lines. Importers should confirm with Zhengzhou Huitong the exact pressure-temperature rating, dimensional standard, and whether flanges are supplied with material test reports to ASTM A694 plus dimensional certification to ASME B16.5. Export packaging typically involves crate or pallet shipment with oil coating for rust prevention during transit, though specific preservation and Incoterms require direct agreement.

Zhengzhou Huitong Pipe Fitting Company operates from No.168, Guoji Road, Jinshui District, Zhengzhou, Henan Province, China, postal code 450000. The company holds harbour-tier status on its marketplace platform, with a response rate of 0.00% and no recorded average response hours, suggesting limited platform-based communication. Buyers should establish direct contact through the supplier's registered address or alternative channels outside the marketplace messaging system to ensure reliable quotation and order confirmation.

The supplier's profile indicates specialisation in forged steel flanges for high-pressure oil, gas, and petrochemical applications, with emphasis on ASTM A694 F42 grade production. No information is provided regarding factory floor area, forging press capacity, heat treatment facilities, ISO 9001 or API Q1 certification, annual production volume, or domestic versus export sales ratio. The listing does not disclose workforce size, year of establishment, key clientele, or project references. Prospective buyers should independently verify manufacturing credentials, in-house testing capabilities including mechanical and chemical analysis, and whether the company maintains API 6A or similar product licences for oilfield service.