About Shandong Hengtao Energy Saving & Environment Protection - Heaters Supplier in China

China, specifically Shandong province, lists 49 active products under the Shandong Hengtao Energy Saving & Environment Protection catalogue. The entries cover a spectrum of boiler and heat‑exchange components such as steel super heater tubes, various superheater units for steam boilers, heat‑exchanger surface air pre‑heaters, enamel‑coated tubes and corrugated plates, as well as complete boiler headers and biomass steam boilers. One product, “Carbon Steel Seamless Enameled Tubes”, is identified with HS code 7304.31 and is made from carbon steel grades A179, A210 or ST 35.8. The remaining items are described only by product name without HS‑code details, but they fall within the broader HS chapter 73 for iron and steel products.

The catalogue also includes specialised items like rotary air pre‑heaters, enamel tube air pre‑heaters, spiral finned tube economisers and ASME‑standard economisers. In addition, enameled corrugated plate baskets and spare parts such as enamel sheets are listed, indicating a focus on both primary boiler tubing and ancillary enameled components used in power‑generation and industrial heating applications.

Product Range and Specialties of Shandong Hengtao Energy Saving & Environment Protection

The listed products span three principal categories: (1) superheater and pre‑heater tubes for steam boilers, (2) enameled steel tubes and corrugated plates for high‑temperature service, and (3) complete boiler headers and ancillary economiser units. In the heat‑exchanger market, superheater tubes are typically supplied in seamless carbon steel with diameters from 25 mm to 150 mm, wall thicknesses ranging 2 mm‑10 mm, and are rated to pressures of 10‑30 MPa under ASME Section II. Enamel‑coated tubes usually carry an enamel layer of 0.2‑0.4 mm, providing corrosion resistance up to 900 °C. Corrugated plates for boiler water‑walls are often produced in thicknesses of 3‑10 mm with a standard pitch of 30‑50 mm, conforming to EN 10210 or Chinese GB 12459 standards.

Trade and Export Information - Shandong Hengtao Energy Saving & Environment Protection

China is a major exporter of boiler‑tube assemblies and heat‑exchange components, with the primary destinations including Southeast Asian power‑generation projects, Middle‑East industrial plants, and European combined‑cycle facilities. HS code 7304.31 covers seamless carbon‑steel tubes, a category that routinely requires compliance with ASME U‑stamp or CE‑PED certification for pressure equipment. Importers typically request mill test certificates (MTC), chemical analysis reports, and dimensional inspection certificates before shipment. Standard export packaging involves bundling tubes in wooden crates, using moisture‑resistant liners, and labeling with HS codes and material grades. Common Incoterms for these heavy, bulk items are FOB Shanghai or Ningbo, with buyers arranging container loading (20‑ft or 40‑ft) and inland transport.

Sourcing from Shandong Hengtao Energy Saving & Environment Protection - Buyer Guidance

When sourcing from this supplier, buyers should request the latest mill test certificate confirming the carbon‑steel grade (A179/A210/ST 35.8) and the enamel coating specification (thickness, curing temperature, and adhesion test). For superheater and economiser tubes, an ASME‑U stamp or equivalent PED declaration should be verified, along with a pressure‑test report at the intended service pressure. Samples of enamel finish can be examined for crack resistance and thermal shock tolerance before final order. Confirm the packaging method (e.g., wooden crate with anti‑rust coating) and ensure the shipment terms match the buyer’s logistics plan, especially for oversized 40‑ft containers.

What types of boiler tubes does the supplier list?

The catalogue includes steel super heater tubes, carbon‑steel seamless enameled tubes (HS 7304.31), enamel‑coated tubes, and water‑wall tubes for boiler applications.

Are the enameled tubes compliant with international standards?

The supplier specifies carbon‑steel grades A179, A210 or ST 35.8, which are compatible with ASME Section II and EN 10210 when a proper enamel coating is applied. Buyers should request the relevant certification documents.

Which HS code applies to the carbon‑steel seamless enameled tubes?

HS code 7304.31 is assigned to the carbon‑steel seamless enameled tubes listed in the catalogue.

What documentation should a buyer request before placing an order?

Typical documents include a mill test certificate, an ASME‑U stamp or PED declaration, an enamel coating test report, and a dimensional inspection report.

What are the typical packaging and shipping methods for these products?

Products are usually bundled in wooden crates, protected with moisture‑resistant liners, and shipped in 20‑ft or 40‑ft containers under FOB Shanghai or Ningbo terms.

What is the usual minimum order quantity (MOQ) for superheater tubes?

MOQs vary by tube size and length but commonly start at one full 20‑ft container load, roughly 10‑12 metric tonnes, depending on the buyer’s specifications.

How long is the lead time for a standard batch of enameled tubes?

Lead times typically range from 30 to 45 days after receipt of a confirmed order, material availability and coating schedule permitting.

Which markets most frequently import these boiler components from China?

Key import markets include Southeast Asia (Indonesia, Vietnam), the Middle East (Saudi Arabia, UAE), and Europe (Germany, Italy), where industrial power‑generation and district‑heating projects are active.