Stainless Steel Forged Flange

Stainless steel forged flanges are pipe connection components manufactured by integral forging using ASTM A182 stainless steel forgings or project-specified materials. They are mainly used to achieve reliable sealing connections between pipes, valves, pumps, and pressure equipment. 

Integral Forging: Manufactured using an integral hot forging process, the forging parameters are carefully controlled to achieve a denser metal structure, resulting in excellent mechanical strength, toughness, and fatigue resistance, meeting the requirements of high-temperature and high-pressure applications.

Multiple Stainless Steel Materials Available: Available in materials such as 304, 304L, 316, 316L, 321, 347, F51, and F53, offering excellent resistance to oxidation, acids and alkalis, pitting corrosion, and chloride ion corrosion, helping to extend the equipment's service life.

CNC Precision Machining: CNC machining equipment is used to complete the machining of sealing surfaces, bolt holes, and beveling, strictly controlling dimensional accuracy, coaxiality, and surface roughness, contributing to improved sealing performance between the flange and gasket.

Supports Multiple Standards and Sealing Surface Forms: Products can be manufactured according to standards such as ASME B16.5, ASME B16.47, EN1092-1, DIN, and JIS B2220, and offer sealing surface forms such as RF, FF, RTJ, TG, and M/F to meet the design requirements of different projects.

Raw Material Procurement and Verification
Stainless steel forgings or round bars conforming to ASTM A182 standards are selected. All materials are accompanied by original material certificates, and a furnace number management system is established to ensure traceability of raw material sources.

Forging and Shaping

Die forging or free forging processes are used according to product specifications. Forging temperature and forging ratio are controlled to optimize metal grain structure and improve product mechanical properties and pressure resistance.

Heat Treatment
Solution heat treatment is performed according to material grade and relevant standards to improve material microstructure, corrosion resistance, and mechanical property stability.

Precision Machining
CNC equipment is used to machine outer diameters, inner holes, bolt holes, beveling, and sealing surfaces to ensure product dimensional accuracy and interchangeability meet standard requirements.

Surface Treatment
Pickling and passivation, sandblasting, mechanical polishing, or electropolishing are provided according to customer needs to improve product surface quality and corrosion resistance.

Finished Product Inspection
Before products leave the factory, they undergo dimensional inspection, visual inspection, sealing surface inspection, material verification, and non-destructive testing to ensure that the products meet the technical specifications of the order.

Raw Material Traceability Management: All raw materials are sourced from qualified suppliers. Material certificates are verified upon arrival at the factory, and Heat Numbers are recorded, enabling full traceability from raw materials to finished products.

Controlled Production Process: A comprehensive quality management system covering forging, heat treatment, machining, inspection, and packaging is in place, with standardized controls implemented for key processes.

Finished Product Testing System: The following testing items can be provided based on customer requirements and project specifications:

PMI Material Identification: 100% piece-by-piece inspection available.
Dimensional Inspection: 100% inspection available.
Appearance Inspection: 100% inspection available.
Chemical Composition Analysis: Per batch.
Tensile Testing: As per standard requirements.
Hardness Testing: As per standard requirements.
Impact Testing: Available for special operating conditions.
PT Penetrant Testing: Available.
UT Ultrasonic Testing: Available.
MT Magnetic Particle Testing: Applicable to duplex stainless steel and other magnetic materials.

Material Customization: Supports customization of 304, 316, 321, 347, duplex stainless steel, and special stainless steel materials.

Standard Customization: Supports ASME, EN, DIN, JIS, GOST, and other standards, as well as customer-specific technical specifications.

Non-Standard Product Development: Supports customized development based on customer-provided CAD drawings, PDF drawings, 3D models, and samples.

Customized Marking: Supports laser marking, stamping, customer logos, heat numbers, project numbers, and QR code labels.

Customized Packaging: Provides plywood crates, wooden pallets, rust-proof film packaging, and project-specific export packaging solutions.

Our products are widely used in the following industries:

Supports wholesale inventory, equipment supply, and large-scale engineering project procurement.

MOQ: Small-batch trial orders are supported for standard products; bulk purchases enjoy price discounts.

Delivery Time:

Standard Specifications: Shipment is arranged according to inventory status; Customized Orders: Typically approximately 25–45 days, depending on specifications, quantity, and inspection requirements.