Import Best Selling Industrial Coal Fired Steam Boiler — Buy in Bulk from Supplier in China

The DZL series coal fired steam boiler from Xuzhou Double Rings Machinery Co., Ltd uses a horizontal three-pass water fire tube composite design, a configuration standard for industrial solid-fuel boilers rated between 1 and 20 tonnes of steam per hour. The wet-back construction places the turnaround chamber behind the boiler, eliminating refractory doors and reducing maintenance access points compared with dry-back alternatives. Coal feeding is typically handled by a travelling grate or chain grate stoker, with combustion air supplied through forced and induced draught fans to achieve complete carbon burnout. The boiler pressure rating, steam temperature and thermal efficiency are not stated in the listing data, so buyers should request the design pressure (MPa or bar), rated steam temperature (degrees Celsius), and guaranteed boiler efficiency (%) before proceeding.

The fire tubes are fabricated from boiler-grade carbon steel, with the water-cooled walls and drum meeting GB or ASME material standards typical for Chinese-manufactured industrial boilers. The three-pass arrangement routes flue gas through the furnace, then through tube bundles in the second and third passes, maximising heat recovery before exhaust to the stack. Standard coal specifications for this boiler class include bituminous coal with calorific value above 5,000 kcal/kg and particle size compatible with the grate system. Sulphur content and ash fusion temperature of the fuel directly affect slagging tendency and emissions compliance. Typical auxiliary equipment includes an economiser, multicyclone or baghouse dust collector, and induced-draught fan, though the exact scope of supply varies by order.

Primary applications span power generation, chemical processing, textile dyeing and finishing, paper pulping, and food processing where saturated or superheated steam drives turbines, jacketed vessels, or drying cylinders. Buyers in the textile sector typically require stable steam pressure with minimal variation, while food processors need boilers compliant with hygiene and emissions standards for their jurisdiction. The supplier lists FOB and CIF as available Incoterms, with letter of credit and telegraphic transfer as payment options. Response rate data is unavailable, so prospective buyers should confirm lead time, inspection protocol, and whether the boiler carries a Chinese manufacturing licence (required for pressure vessels) or international certification such as ASME U-stamp or CE marking.

Xuzhou Double Rings Machinery Co., Ltd is located at No.28 Beijing North Road, Tongshan New District, Xuzhou, Jiangsu Province, 221116, China. The company holds an imported supplier tier and harbour trust tier within the marketplace classification system. Response rate is recorded at 0.00% with zero average response hours, which indicates no response history is available through the platform rather than confirmed non-response. Buyers should treat this as an unverified engagement pattern and reach out directly to assess communication reliability and English-language capability before committing to technical discussions or factory inspection.

The supplier's primary product focus, exact year of establishment, registered capital, factory floor area, and workforce size are not disclosed in the available profile data. No certifications, patent holdings, or named client references appear in the listing. The company address places it within Xuzhou's industrial zone, a region with established machinery manufacturing clusters, but proximity to other boiler makers does not confer any specific quality assurance. Buyers should request the boiler manufacturing licence (special equipment permit), ISO 9001 certificate if claimed, and third-party inspection reports for previous export orders. A video factory inspection or third-party audit is advisable given the absence of verification signals.