Tube Sheet Flange

High-precision tube sheet connection components with pressure and temperature resistance, providing reliable sealing and structural support for your heat exchange equipment.

Product Overview: What is a Tube Sheet Flange?

A tube sheet flange is a critical pressure-bearing component used in pressure vessels such as heat exchangers, boilers, and condensers to secure tube bundles and isolate shell-side from tube-side media. Typically, it consists of a precision-machined, perforated circular plate with numerous tube holes. Its outer edge features a standard flange sealing face and bolt holes for connecting to equipment shells or other pipe flanges.

As a manufacturer with two decades of metalworking expertise, Zhongli Flange deeply understands the critical role tube sheets play in equipment. We not only provide customized tube sheets meeting your drawings' specifications but also offer professional advice across multiple dimensions—from material selection and process optimization to quality control—ensuring each tube sheet delivers exceptional sealing performance, sufficient strength, and extended service life.

Core Product Features and Manufacturing Advantages

Rigorous Materials Science and Heat Treatment

Premium Materials: Based on medium corrosivity, operating temperature, and pressure, we offer carbon steel (Q345R, 20#), stainless steel (304, 316L), alloy steel (16Mn, 15CrMo), and other materials.

Performance Assurance: All plates undergo ultrasonic testing (UT) and spectral analysis prior to storage. For medium-to-thick plates, we implement full-body normalizing + tempering heat treatment to refine grain structure, homogenize microstructure, eliminate internal stresses, and prevent post-processing deformation.

High-Precision Tube Hole Machining Technology

Precision Control: Utilizing large CNC deep-hole drilling machines or vertical machining centers ensures dimensional accuracy for thousands of tube holes, including bore tolerance, hole spacing precision, and perpendicularity. This forms the foundation for seamless heat exchanger tube insertion, welding, and uniform heat transfer.

Professional Sealing Surface and Groove Machining

Sealing Surface Machining: Flange sealing surfaces (RF/MFM) are precision-machined using CNC lathes to ensure surface finish and flatness, achieving a perfect seal with the equipment shell.

Welding Grooves: Various pipe hole welding grooves (e.g., Type I, V-type, U-type) can be machined according to customer welding process requirements, facilitating strength welding or lap expansion of heat exchange tubes.

Comprehensive Quality Inspection System

Full-Process Inspection: Implementing continuous tracking and inspection throughout the entire process—from raw materials, rough machining, heat treatment to finishing.

Final Inspection: 100% dimensional verification of finished products. Third-party inspection reports can be provided upon request.

Technical Specifications

Primary Application Fields

Petrochemical Industry: Heat exchangers for atmospheric and vacuum distillation units in refineries; feed and product heat exchangers for hydrogenation reactors (e.g., E-101/102).

Power Generation: High/low-pressure heaters, condensers, economizers, and air preheaters for power plants.

Pharmaceuticals & Food Processing: Sanitary stainless steel tube sheets for fermenter jackets and process fluid heating/cooling units.

Shipbuilding and Offshore Engineering: Central coolers, lubricating oil coolers, and vaporizers for LNG carriers.

District Heating: Core components in plate heat exchangers or shell-and-tube heat exchangers within regional heating systems.

Why Choose Zhongfa Flange's Tube Sheet Products?

Equipment and Production Capacity Assurance: Equipped with large CNC floor-type boring and milling machines, deep-hole drilling systems, and heat treatment facilities, we possess the capability for both batch production and manufacturing large-sized individual components.

One-Stop Delivery: We provide comprehensive services spanning the entire process—from raw material procurement, forging (if required), heat treatment, and machining to final product inspection, packaging, and shipping. Responsibilities are clearly defined, ensuring reliable delivery.

Get Your Customized Solution and Quote

Tube sheet flanges are highly customized products. Please provide your technical drawings or specific technical parameters, and our project engineers will:

Conduct a rapid technical review (response within 24 hours).

Provide a detailed process solution and transparent quotation.

Offer an accurate production cycle estimate.