Silicon Carbide Tubesheet

GORGEOUS CERAMICS (GGS) silicon carbide tube sheets are made from spray-granulated 탄화규소 powder, which is then formed by isostatic pressing and pressureless sintering. We can design sealing methods according to customer needs and can process threads, etc.

Characteristics and Advantages of Silicon Carbide Tube Sheets

Comprehensive corrosion resistance advantages

Traditional heat exchanger tubesheets are typically made of materials such as graphite, Hastelloy, or stainless steel. While these materials offer some degree of corrosion resistance, prolonged exposure to concentrated acids, high-temperature acidic fluids, or media containing chloride ions makes them highly susceptible to severe issues such as pitting, crevice corrosion, intergranular corrosion, oxidative corrosion, and metal ion leaching.

In contrast, silicon carbide offers far superior corrosion resistance compared to graphite and metals. The silicon carbide tubesheets from GORGEOUS CERAMICS (GGS Ceramic) are manufactured using pressureless sintered silicon carbide (SSiC) with a SiC content exceeding 99%. As a covalently bonded ceramic, this material exhibits exceptional chemical stability, remaining virtually immune to corrosion from the vast majority of inorganic acids, organic acids, and mixed acid systems. Under most chemical processing conditions, our silicon carbide tubesheets offer a service life more than five times that of graphite tubesheets, allowing you to confidently utilize our products in applications such as sulfuric acid concentration systems, hydrochloric acid recovery equipment, chemical heat exchangers, and the chlor-alkali industry.

Table of corrosion resistance advantages of silicon carbide tubesheets

High thermal conductivity exceeding 160 W/m·K maximizes heat transfer efficiency

The high thermal conductivity of silicon carbide means that our tube sheets serve not only to secure the heat exchanger tubes but also act as vital pathways for heat transfer.

Silicon carbide’s thermal conductivity is ten times that of stainless steel and five times that of high-purity alumina ceramics. This superior thermal conductivity results in lower thermal resistance and faster heat exchange, leading to more uniform temperature distribution and reduced localized thermal stress; this yields significant efficiency improvements for equipment requiring rapid, uniform heat transfer, such as acid coolers, acid heaters, evaporators, and condensers.

Ultra-high purity silicon carbide effectively prevents media contamination

In industries requiring high levels of cleanliness—such as electronic chemicals and high-purity chemical processing—equipment contamination is a critical concern. In these sectors, the use of metal tube sheets carries a risk of leaching contaminant ions (such as Fe, Ni, Cr, and Cu) during prolonged operation. Such contamination can lead to severe consequences, including reduced product purity, catalyst deactivation, wafer contamination, and the degradation of chemical reagents.

Silicon carbide tube sheets from GORGEOUS CERAMICS (GGS Ceramic) eliminate these issues at the source. With a SiC content exceeding 99%, this inorganic, non-metallic material does not release metal ions or contaminate the process fluid, making it ideally suited for ultra-high-purity applications—including semiconductor wet processing equipment, photovoltaic chemicals, lithium battery materials, and pharmaceutical intermediates.

Hardness second only to diamond; resistant to particle erosion

Many acidic process fluids are not pure liquids; they often contain abrasive particles—such as mineral slurries, tailings, desulfurization slurries, catalyst slurries, carbon powder, or ceramic powder—that cause continuous wear. Standard graphite materials are highly susceptible to erosion and grooving, which can lead to critical issues such as seal failure.

Silicon carbide boasts a Mohs hardness of approximately 9.2 to 9.5—second only to diamond—allowing it to maintain dimensional and sealing stability even under prolonged exposure to high-speed particle impact and slurry abrasion. The service life of our silicon carbide tubesheets is more than five times that of comparable graphite products.

Specifications and Custom Finishing Capabilities

Outer Diameter: GORGEOUS CERAMICS (GGS Ceramic) supplies tube sheets with outer diameters up to 600 mm, suitable for medium-to-large shell-and-tube heat exchangers.

Thickness Range: Standard thicknesses of 20–30 mm are available; the structure can be optimized based on your application's pressure rating, tube bundle layout density, and operating conditions.

Structure and Sealing: Silicon carbide tube sheets serve not only as load-bearing components but also as critical elements of the sealing system. GORGEOUS CERAMICS (GGS Ceramic) offers precision machining based on your drawings to create various specialized installation features—such as stepped groove structures, specific bore diameters and pitches, layout patterns (inline or triangular), precision threading, locating spigots, and sealing grooves. These components can be paired with corrosion-resistant sealing materials—such as FFKM O-rings or PTFE seals—to form a reliable static sealing system.

자주 묻는 질문

1. What is the machining precision of the silicon carbide tube sheets from GORGEOUS CERAMICS (GGS Ceramic)?

Our machining precision is as follows:
Outer diameter: ±1.0 mm
Thickness: ±0.1 mm
For projects requiring higher assembly precision, we offer subsequent precision grinding; specific tolerances can be assessed based on product dimensions, structural complexity, and the machining process.

2. What quality inspections are performed on the silicon carbide tube sheets?

Every tube sheet from GORGEOUS CERAMICS (GGS Ceramic) undergoes rigorous inspection before leaving the factory, including dimensional checks, visual inspections, surface fluorescent penetrant inspection (FPI), and re-verification of critical dimensions. We can also provide dimensional inspection reports and relevant quality documentation upon customer request.

3. In which industries are silicon carbide tubesheets used?

These products are primarily used in chemical processing equipment, acid recovery systems, waste acid treatment equipment, petrochemicals, environmental desulfurization equipment, pharmaceutical equipment, fine chemicals, semiconductor wet processing equipment, lithium-ion battery material production equipment, and new energy chemical equipment.