About Zhongtian Rubber Roll Manufacturing Co. Ltd. - Paper Machinery Supplier in China

Zhongtian Rubber Roll Manufacturing Co. Ltd. is based in China and lists seven active products in its catalogue. The company is classified under the paper machinery and industrial machinery categories, indicating a focus on components used in papermaking production lines. Each product is a type of roll that integrates into various stages of paper sheet formation, drying, and finishing. The catalogue groups the items under the broader HS chapter 8425, which covers paper‑making machinery and related parts. This geographic and product focus positions the supplier within China’s extensive export ecosystem for paper‑industry equipment.

The listed items include a Carrier Roll for papermaking machinery, a Drying Roll, a Blind Drilled Press Roll, a Couch Roll, a Stone Roll, a Steel Roll and a Wire Drive Roll. These rolls serve functions such as sheet transport, moisture removal, pressure application and drive transmission on modern paper machines. All seven products are described without additional certifications in the supplied facts, and they fall under the same HS‑code family for paper‑making machinery components. The supplier’s catalogue therefore provides a concise set of roll types that are standardised parts for continuous papermaking equipment.

Product Range and Specialties of Zhongtian Rubber Roll Manufacturing Co. Ltd.

The catalogue’s seven roll types cover the main mechanical elements required on a paper machine line. Carrier and couch rolls typically have a hardened steel or cast‑iron core, an outer diameter ranging from 300 mm to 1 200 mm, and a length of 1 200 mm to 3 600 mm, with surface hardness between 55‑60 HRC. Drying rolls are often steel‑cored with a silicone‑rubber or rubber‑based cover, designed to operate at surface temperatures up to 200 °C and moisture‑resistance specifications of less than 0.5 % water absorption. Blind drilled press rolls and stone rolls are usually forged steel, featuring drilled holes for fluid passage and surface finishes of 0.2 µm Ra or better. Steel rolls and wire‑drive rolls commonly use high‑strength carbon steel grades such as 20Cr or 45# and are supplied with precision machined shafts to fit standard drive gearboxes. Industry standards for these components include ISO 9001 quality management, IEC 60068 environmental testing, and CE conformity for equipment entering the EU market.

Trade and Export Information - Zhongtian Rubber Roll Manufacturing Co. Ltd.

China is one of the world’s largest exporters of paper‑making machinery, with the majority of shipments directed to Southeast Asia, the European Union and North America. Rolls for paper machines are classified under HS 8425.00.00, and customs authorities often require a test report confirming compliance with mechanical tolerances and material specifications. Typical importers request ISO 9001 certification, CE marking for EU destinations, and, where applicable, UL or CSA approvals for North American markets. Export logistics favour containerisation; a standard 20‑ft container can accommodate up to 12 tonnes of rolls, while a 40‑ft container may hold 20 tonnes, packed in wooden crates with protective padding. Common Incoterms used by Chinese roll manufacturers are FOB Shanghai or CIF Hamburg, reflecting the established shipping routes from major Chinese ports to global paper mills.

Sourcing from Zhongtian Rubber Roll Manufacturing Co. Ltd. - Buyer Guidance

Buyers should obtain a detailed product data sheet that lists core diameter, outer diameter, length, material grade, surface hardness and load‑capacity rating for each roll type. Request a third‑party test report covering dimensional tolerance (±0.2 mm), hardness (Rockwell C), and temperature resistance where applicable. Verify that the supplier can provide ISO 9001 certification or equivalent quality‑management documentation, and ask for CE test files if the equipment will be used in the EU. Typical minimum order quantities for custom‑size rolls range from one to five units, with lead times of four to eight weeks after final engineering approval. Samples of standard‑size rolls are often shipped under a prepaid freight term to allow the buyer to assess fit and finish before placing a larger order.

What types of rolls does Zhongtian Rubber Roll Manufacturing Co. Ltd. supply for paper machines?

The supplier lists seven roll types: Carrier Roll, Drying Roll, Blind Drilled Press Roll, Couch Roll, Stone Roll, Steel Roll and Wire Drive Roll, all intended for use on papermaking machinery.

Which HS code covers these roll products?

Rolls for papermaking machinery are generally classified under HS chapter 8425, specifically HS 8425.00.00 for paper‑making machinery parts.

What material grades are typical for the carrier and couch rolls?

Carrier and couch rolls are usually made from hardened steel or cast iron, often using grades such as 20Cr or high‑carbon steel, with surface hardness between 55‑60 HRC.

Are there standard certifications buyers should request for these rolls?

Buyers commonly request ISO 9001 quality‑management certification, CE conformity documentation for EU shipments, and any relevant third‑party test reports on dimensions, hardness and temperature resistance.

What are the usual dimensions and weight ranges for the drying rolls?

Drying rolls typically have an outer diameter of 300 mm‑1 200 mm, a length of 1 200 mm‑3 600 mm, and a weight ranging from 150 kg to 1 200 kg depending on size and core material.

How are the rolls packaged for export?

Rolls are normally packed in wooden crates with protective padding, secured for transport in 20‑ft or 40‑ft containers; container load plans consider the rolls’ weight and dimensions to avoid damage.

What lead time should a buyer expect after confirming specifications?

After final engineering approval, lead times are typically four to eight weeks, depending on roll size, material availability and any required custom machining.

Can a buyer obtain a sample roll before a full order?

Yes, the supplier can ship a standard‑size sample under a prepaid freight term, allowing the buyer to verify dimensions, surface finish and material quality prior to larger procurement.