Import Enamel Tube Air Preheater — Buy in wholesale FOB from Supplier in China
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Enamel Tube Air Preheater
This enamel tube air preheater is designed to recover waste heat from boiler flue gases and transfer it to combustion air, improving thermal efficiency by 8 - 15%. The tubes are constructed from carbon steel or low-alloy steel, coated with a high-silica enamel layer that resists acid dew point corrosion. The system operates under moderate pressure and temperatures up to 350°C on the gas side and 250°C on the air side.
The enamel coating is applied using a multi-layer spray and firing process, typical for industrial heat exchangers in China. Standard enamel formulations contain 60 - 70% silica, 15 - 20% boron oxide, and trace metal oxides for thermal expansion matching. Tube wall thicknesses range from 2.5 mm to 4.0 mm, depending on pressure rating. The listing does not specify tube diameter or pitch, but standard sizes are 38 mm, 51 mm, or 63.5 mm outer diameter.
The equipment is used in power plants, cement kilns, and chemical process heaters where energy recovery is critical. Buyers typically specify the preheater to fit existing boiler flue gas ducts. Trade terms are negotiated directly, with common arrangements including FOB Qingdao Port and payment via L/C or T/T. Lead times are not stated but are typically 60 to 90 days for custom configurations.
| Application | Flue gas heat recovery for boiler systems |
| Tube material | Carbon steel or low-alloy steel |
| Enamel coating type | High-silica acid-resistant enamel |
| Max gas side temperature | Up to 350°C |
| Max air side temperature | Up to 250°C |
| Typical tube outer diameter | 38 mm, 51 mm, or 63.5 mm (standard for industrial preheaters) |
| Typical tube wall thickness | 2.5 mm to 4.0 mm (standard for pressure-rated heat exchanger tubes) |
| Typical operating pressure | 0.5 bar to 2.0 bar (standard for air-side pressure in boiler systems) |
| Typical heat transfer efficiency | 8% to 15% improvement over unheated air (standard for enamel tube preheaters) |
| Corrosion resistance standard | Resists acid dew point down to 120°C (typical for coal and biomass flue gases) |
Shandong Hengtao Energy Saving & Environment Protection is based in Gaomi City, Weifang, Shandong Province, China. The supplier is verified under harbor trust standards, indicating basic export compliance. The listing provides no details on factory size, workforce, R&D capacity, or years in operation. There is no mention of ISO certifications, production capacity, or prior project references.
The business appears focused on manufacturing industrial heat recovery equipment, specifically enamel tube preheaters. No claims are made about in-house tube drawing, enamel formulation, or testing facilities. The supplier does not state whether it designs custom configurations or uses standardized modules. Buyers must request technical drawings, material certifications, and performance test reports directly.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Sourcing Enamel Tube Air Preheater from Shandong Hengtao Energy Saving & Environment Protection - China Import Guide
Before ordering, confirm the exact tube dimensions, wall thickness, and enamel composition with the supplier. Request material test reports for the steel substrate and enamel coating, including chemical analysis and adhesion tests. Verify that the preheater design accommodates your boiler’s flue gas flow rate, temperature profile, and soot-blowing system. Do not accept generic specifications without project-specific engineering data.
Logistics are typically handled via FOB Qingdao Port or Shanghai Port. Lead time is not stated but typically ranges from 60 to 90 days for custom builds. Payment terms are commonly 30% advance, 60% against bill of lading, and 10% after commissioning. Confirm Incoterms explicitly, as FOB and CIF differ on insurance responsibility. Request a detailed packing list with lifting points and handling instructions for oversized components.
Inspect for enamel cracks, pinholes, or coating irregularities using a high-voltage holiday detector. Check tube alignment and weld integrity with ultrasonic testing. Verify that all flanges match your existing ductwork dimensions and bolt patterns. Retain a sample of the enamel coating for future reference. Conduct a pressure test at 1.5x working pressure before commissioning and request a final inspection certificate signed by a third-party inspector.
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30 suppliersBuy Enamel Tube Air Preheater in Bulk — Verified Supplier in China
When sourcing Enamel Tube Air Preheater for your business, securing the right balance of quality and cost is essential. Shandong Hengtao Energy Saving & Environment Protection, a verified supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1500/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Agriculture sector with strong demand from importing countries worldwide.
Enamel Tube Air Preheater Specifications, Trade Terms & Pricing
Importing Enamel Tube Air Preheater requires careful attention to shipping logistics, customs compliance, and secure payment terms. Shandong Hengtao Energy Saving & Environment Protection offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
About Shandong Hengtao Energy Saving & Environment Protection — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Enamel Tube Air Preheater has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Agriculture category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Enamel Tube Air Preheater — Shipping, Logistics & Customs
Importing Enamel Tube Air Preheater requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Enamel Tube Air Preheater
What is the wholesale price of Enamel Tube Air Preheater?
The current listed wholesale price for Enamel Tube Air Preheater from Shandong Hengtao Energy Saving & Environment Protection is $1500/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Shandong Hengtao Energy Saving & Environment Protection through EximNext.
What is the Minimum Order Quantity (MOQ) for Enamel Tube Air Preheater?
The supplier, Shandong Hengtao Energy Saving & Environment Protection, has set a Minimum Order Quantity (MOQ) of 1 Bags for Enamel Tube Air Preheater. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Enamel Tube Air Preheater?
The HS Code classification for Enamel Tube Air Preheater depends on the specific grade and form. Contact Shandong Hengtao Energy Saving & Environment Protection through EximNext for the exact HS Code and customs documentation required for your destination country.
How can I import Enamel Tube Air Preheater from China?
To import Enamel Tube Air Preheater from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Shandong Hengtao Energy Saving & Environment Protection. Ensure you have the necessary import licenses for Agriculture products in your destination country.
Is Shandong Hengtao Energy Saving & Environment Protection a verified supplier?
Yes, Shandong Hengtao Energy Saving & Environment Protection is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Enamel Tube Air Preheater?
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Shandong Hengtao Energy Saving & Environment Protection through EximNext.
What packaging options are available for bulk orders of Enamel Tube Air Preheater?
Shandong Hengtao Energy Saving & Environment Protection offers Enamel Tube Air Preheater with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Enamel Tube Air Preheater the most?
Enamel Tube Air Preheater is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Shandong Hengtao Energy Saving & Environment Protection through our platform.
What certifications does this Enamel Tube Air Preheater supplier hold?
Shandong Hengtao Energy Saving & Environment Protection maintains international quality certifications. These ensure that the Enamel Tube Air Preheater meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Enamel Tube Air Preheater on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Shandong Hengtao Energy Saving & Environment Protection will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Shandong Hengtao Energy Saving & Environment Protection.
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