About Zhangjiagang Vitten Industry Co.,Ltd - Boiler & Heat‑Exchanger Tube Supplier in China

China‑based Zhangjiagang Vitten Industry Co.,Ltd lists ten distinct tube products in its catalogue. All entries are steel tubes intended for boiler, heat‑exchanger and pressure‑vessel applications and are identified by international standards such as ASTM, ASME, EN and JIS. The catalogue includes seamless carbon boiler tubes, alloy heat‑exchanger tubes and a mix of carbon and alloy grades that comply with specifications like ASTM A210, A335, A199, A179, ASME SA556, EN 10216‑2, JIS G3461 and G3462. Each product is referenced by its standard designation rather than a proprietary grade, allowing buyers to match the item to known industry specifications.

The listed tube types fall within the steel tube segment of HS Chapter 73, commonly coded under headings 7304 (steel tubes, pipes and hollow profiles) and 7305 (other tubes). Buyers typically source these tubes for power‑generation plants, petrochemical complexes, oil‑and‑gas refineries and large‑scale HVAC systems. The catalogue’s focus on globally recognized standards means the products can be cross‑referenced against regional building codes and pressure‑vessel directives in Europe, North America and the Middle East.

Product Range and Specialties of Zhangjiagang Vitten Industry Co.,Ltd

The catalogue covers seamless carbon boiler tubes (ASTM A210, EN 10216‑2, JIS G3461) and a series of alloy heat‑exchanger tubes (ASTM A335, A199, A209, ASME SA556, JIS G3462). In practice, such tubes are supplied in diameters ranging from 1 in (25 mm) to 24 in (600 mm) with wall thicknesses from 0.065 in (1.6 mm) up to 0.5 in (12.7 mm). Typical pressure ratings span 150 bar to 300 bar depending on grade, and alloy variants often meet ASTM A335 P91 or P92 specifications for high‑temperature service. Buyers also encounter standard surface finishes such as mill‑scale, pickled and oiled, or cold‑drawn for tighter tolerances.

Industry practice classifies these tubes by grade (e.g., ASTM A210 Grade B, ASTM A335 P91, P92) and by heat‑treatment condition (normalized, tempered). Common chemical composition limits include carbon content below 0.30 % for carbon tubes and alloying elements such as chromium, molybdenum and nickel for high‑temperature grades. Dimensional tolerances are usually governed by ASME‑B36.10M or EN 10216‑2, which define permissible variations for outside diameter, wall thickness and straightness.

Trade and Export Information - Zhangjiagang Vitten Industry Co.,Ltd

China is a major exporter of steel boiler and heat‑exchanger tubes, with the bulk of shipments destined for the Asia‑Pacific, Europe and the Middle East. Export logistics typically involve 20‑ft or 40‑ft containers packed in wooden crates or steel drums, protected with anti‑rust oil and moisture‑absorbing packs to meet ISO 9001‑compatible handling standards. Common Incoterms used by Chinese tube exporters are FOB Shanghai or CIF destination ports such as Rotterdam, Dubai or Singapore. Buyers usually request material test reports (MTR), mill test certificates (MTC) and compliance declarations referencing the applicable ASTM, EN or JIS standards, as well as third‑party inspection reports where required by the purchaser’s country of import.

Regulatory considerations include adherence to the European Pressure Equipment Directive (PED) for EU buyers, the ASME Boiler and Pressure Vessel Code for US customers, and the Chinese GB /T 12455 standard for domestic compliance. Although the supplier’s catalogue does not list specific certifications, exporters of these tube categories often hold ISO 9001 quality‑management certification and may obtain additional certifications such as CE marking for PED‑covered products.

Sourcing from Zhangjiagang Vitten Industry Co.,Ltd - Buyer Guidance

When evaluating Zhangjiagang Vitten Industry Co.,Ltd, buyers should request the latest mill test report for each tube grade, confirming chemical composition, mechanical properties and heat‑treatment condition. It is prudent to verify that the product dimensions and pressure ratings match the purchaser’s design specifications, and to obtain a compliance certificate that references the exact ASTM, EN or JIS standard cited in the catalogue.

Buyers should also ask for packaging details, including crate dimensions, wood treatment compliance (ISPM 15) and any protective oiling or coating applied. Confirmation of the HS code used for customs clearance (typically 7304 or 7305) helps avoid tariff misclassification. Finally, requesting a sample batch for dimensional inspection and non‑destructive testing (e.g., ultrasonic or radiographic) before placing a full order can reduce risk of non‑conformity.

What standards do the tubes from Zhangjiagang Vitten Industry Co.,Ltd conform to?

The catalogue lists tubes that meet ASTM (A210, A335, A199, A179), ASME SA556, EN 10216‑2 and JIS (G3461, G3462) specifications, each covering chemical composition, mechanical properties and pressure‑rating criteria.

Which HS codes are applicable to these steel tubes?

Steel boiler and heat‑exchanger tubes are generally classified under HS Chapter 73, most often under heading 7304 (steel tubes, pipes and hollow profiles) or heading 7305 (other tubes).

What typical dimensions and pressure ratings are available?

Typical product ranges include diameters from 25 mm to 600 mm, wall thicknesses from 1.6 mm to 12.7 mm, and pressure ratings from 150 bar up to 300 bar depending on the grade and alloy composition.

Which certifications should a buyer request?

Buyers should request the mill test report, material test report and a certificate of compliance referencing the specific ASTM, EN or JIS standard. ISO 9001 quality‑management certification is common among Chinese tube exporters and may be requested for additional assurance.

What packaging and shipping methods are used?

Tubes are usually crated in wooden pallets treated to ISPM 15 standards, sometimes placed in steel drums, and shipped in 20‑ft or 40‑ft containers. Protective oiling and moisture‑absorbing packs are applied to prevent corrosion during transit.

What are the typical lead times and minimum order quantities?

Lead times for stainless‑steel boiler tubes generally range from 4 weeks to 8 weeks after order confirmation, with minimum order quantities often set at one container load (approximately 15‑20 metric tons) depending on the tube size and grade.

How can a buyer verify compliance with regional regulations?

Buyers should obtain the relevant compliance certificates (e.g., PED‑CE marking for EU, ASME Code stamp for the US) and may request third‑party inspection reports to confirm that the tubes meet the applicable pressure‑equipment directives.

What documentation is needed for customs clearance?

Customs typically requires the commercial invoice, packing list, certificate of origin, the appropriate HS code declaration (7304/7305) and any required import permits or certifications specific to the destination country.