Import A182 F53 Flange — Buy in Bulk from Supplier in China

The A182 F53 flange is a high-alloy austenitic stainless steel component designed for extreme corrosion resistance in aggressive environments. Manufactured to ASTM A182 F53 specifications, it is part of the 254 SMO family, offering exceptional resistance to pitting, crevice corrosion and stress corrosion cracking. This flange is supplied in multiple configurations, including welding-neck, slip-on, plate, blind, threaded, socket-welding, lapped and stub end variants.

254 SMO (F53) contains typical alloying elements of 20 percent chromium, 18 percent nickel, 6 percent molybdenum and 0.2 percent nitrogen, achieving a PREN of at least 43. This composition provides superior resistance to chloride and sulfuric acid environments, making it a standard material for seawater, pulp and paper, and flue gas desulfurization systems. Typical mechanical properties include a yield strength of 300 MPa and elongation of 35 percent, with the material retaining toughness at sub-zero temperatures.

These flanges are procured by industries such as offshore oil and gas, chemical processing and desalination, where resistance to localized corrosion is critical. Buyers typically specify ASME B16.5 dimensions and pressure classes up to 2500, with additional requirements for NACE MR0175 compliance in sour service applications. Packaging for export usually involves wooden crates with VCI (Vapor Corrosion Inhibitor) wrapping to protect against moisture during transit.

Tobo International Trading Co., Ltd. is based at No.208, Lvdi Road, Baihe Town, Qingpu District, Shanghai, China, a location known for its proximity to major ports and industrial zones. The company holds an imported-tier classification with a harbor trust tier, reflecting its role as a trader rather than a manufacturer. Its profile does not disclose production capabilities or in-house quality control processes.

The supplier’s engagement metrics show a response rate of 0.00 percent and no average response hours recorded, indicating limited or no prior interaction on the platform. No certifications, client references, or production facility details are provided, so buyers should treat this as a trading intermediary and request direct verification of the flange manufacturer’s credentials and compliance with ASTM A182 and ASME standards.