About Changli Holding Co., Ltd. - Industrial Pumps Supplier in

Changli Holding Co., Ltd. lists seven active products across its catalogue. The entries include a concrete rubber cleaning sponge ball, a forged snap bolt clamp coupling, a high‑pressure concrete pump elbow (HS code 7307.99) made from wear‑resistant alloy steel or high‑chrome cast‑iron composite, a DN125 5‑inch concrete pump rubber end hose, a concrete pump ring‑seal rubber gasket, a concrete pump wear plate and cutting ring, and a seamless concrete pump pipe DN125. Each item is described by its functional class rather than by brand or certification. The supplier’s catalogue focuses on components used in concrete pumping systems and related agricultural equipment.

The product set reflects typical downstream parts for concrete placement machinery, such as pump elbows, hoses, seals, wear plates and pipe sections. Industry practice groups these items under HS chapter 73 for metal fittings and HS chapter 84 for machinery parts, with the elbow falling under sub‑heading 7307.99 for other alloy‑steel fittings. No additional material specifications or certification claims are provided by the supplier.

Product Range and Specialties of Changli Holding Co., Ltd.

The catalogue covers concrete‑pump accessories that are standard in the construction equipment supply chain. Concrete pump elbows are commonly fabricated from alloy steel with a hardness of 45‑55 HRC and may be heat‑treated to meet ISO 9001 quality management expectations. Rubber end hoses for DN125 (≈125 mm) fittings typically use reinforced EPDM or neoprene with a working pressure of 20‑30 bar and a length of 1‑2 m per hose. Ring‑seal gaskets are usually molded from nitrile rubber (NBR) with a durometer of 70‑80 Shore A, while wear plates and cutting rings are supplied in thicknesses of 5‑12 mm to match pump chamber dimensions. Seamless pump pipes of DN125 are often supplied in 6‑12 m lengths, with wall thicknesses of 3‑5 mm, conforming to ASTM A53 or equivalent standards.

Trade and Export Information - Changli Holding Co., Ltd.

Exporters of concrete‑pump components typically ship to regions with active infrastructure development, such as the Middle East, North Africa, South‑East Asia and parts of Latin America. The HS code 7307.99 for alloy‑steel fittings is inspected under the World Customs Organization’s rules for metal products, and many importers require a certificate of origin and a test report confirming material composition and mechanical properties. Standard Incoterms for these bulk items are FOB or CIF, with packaging in wooden crates or steel drums to protect against mechanical damage during transit. Buyers often request compliance with ISO 9001 or equivalent quality‑management systems, and may ask for CE marking when the components are destined for the European Economic Area.

Sourcing from Changli Holding Co., Ltd. - Buyer Guidance

When sourcing these pump parts, buyers should request a material test certificate that specifies chemical composition (e.g., chromium, molybdenum percentages for alloy steel) and mechanical properties such as tensile strength and hardness. Samples of rubber hoses and gaskets should be evaluated for dimensional tolerance, pressure rating and abrasion resistance. Verify that the supplier can provide ISO 9001 documentation or a comparable quality‑management audit report, and confirm packaging dimensions (e.g., crate size, pallet count) to plan container loading.

What HS code applies to the high‑pressure concrete pump elbow?

The elbow is classified under HS code 7307.99, which covers other alloy‑steel fittings not elsewhere specified.

Which material is used for the concrete pump elbow?

The supplier lists wear‑resistant alloy steel or a high‑chrome cast‑iron composite as the material for the elbow.

What are the typical dimensions for the DN125 concrete pump rubber end hose?

DN125 refers to a nominal bore of 125 mm; hoses are commonly supplied in 1‑2 m lengths with reinforced rubber construction suitable for 20‑30 bar pressure.

Are certification documents such as ISO 9001 available from this supplier?

The supplier does not list any certifications; buyers should request a copy of the supplier’s quality‑management certificate before placing orders.

What packaging is used for the concrete pump wear plate and cutting ring?

These metal wear parts are usually packed in wooden crates or steel drums to prevent deformation and rust during shipping.

Which regions commonly import concrete pump components?

Importers are frequently located in the Middle East, North Africa, South‑East Asia and Latin America, where large‑scale construction projects drive demand.

What documentation is needed for customs clearance of the elbow?

A commercial invoice, packing list, certificate of origin and the material test certificate are standard documents required for customs clearance of HS 7307.99 items.

What is the typical lead time for a seamless concrete pump pipe DN125?

Lead times vary, but manufacturers often quote 2‑4 weeks for production and preparation of DN125 seamless pipe batches.