About Jiangsu Rudong Lianfeng Petroleum Machinery Co., Ltd. - Elevators & Escalators Supplier in China

Based in Rudong, Jiangsu province, China, Jiangsu Rudong Lianfeng Petroleum Machinery Co., Ltd. lists 26 active products across five core categories: Elevators & Escalators, Drilling Machines & Tools, Tools & Instruments, Slip Rings and Bearings. The catalogue includes items such as CDZ Elevators (HS code 8431.49) made from alloy steel grade AISI 4140/4340, 4KRBM Roller Kelly Bushings (HS code 8483.40) forged from heat‑treated alloy steel, and various drill collar slips. All products fall under HS chapter 84, which covers machinery, mechanical appliances and parts. The supplier’s product identifiers range from manual tongs to pneumatic spiders, reflecting a broad mechanical‑equipment portfolio. No additional corporate history or financial data is provided in the source material.

Product Range and Specialties of Jiangsu Rudong Lianfeng Petroleum Machinery Co., Ltd.

The listed product set comprises petroleum‑field elevators such as CDZ, CD, Type Dd and Type DdZ models, each specified with high‑strength alloy steel (AISI 4140/4340) and heat‑treatment processes that typically achieve hardness between 30 - 35 HRC. Slip rings and roller bushings are catalogued under HS 8483.40 and are forged from alloy steel with precision machining tolerances of ±0.02 mm. Drill‑related tools include Type A Drill Collar Slips, Type Du Drill Pipe Slips and pneumatic spiders, which in the industry are often supplied with ASTM‑A193 or API‑5L material certifications. Elevators such as the Sucker Rod Elevator and SE350 Spider are classified under HS 8431.43, a sub‑heading for oil‑field lifting devices, and are normally shipped in steel‑frame crates to protect the heat‑treated components. Typical industry grades for these categories include ASTM AISI 4140, 4340, and CNC‑machined bearing surfaces with surface roughness Ra ≤ 0.8 µm.

Trade and Export Information - Jiangsu Rudong Lianfeng Petroleum Machinery Co., Ltd.

China is a leading exporter of oil‑field lifting equipment, with major import destinations in the Middle East, North Africa, Southeast Asia and Latin America. HS codes 8431.x and 8428.x are routinely inspected by customs authorities for compliance with the International Convention on the Harmonized System and may require a Certificate of Origin and a test report for mechanical strength. Buyers often request ISO 9001 quality‑management certification, CE marking for equipment used in regulated markets, and API product standards (e.g., API 6A for well‑head equipment). Shipping is typically arranged in 20‑ft or 40‑ft containers, with pallets or wooden crates to accommodate the weight of forged alloy steel parts (often 1 t‑3 t per unit). Common Incoterms used by Chinese manufacturers include FOB Ningbo/Shanghai and CIF for regional ports, with export documentation covering commercial invoice, packing list, bill of lading and material safety data sheets where relevant.

Sourcing from Jiangsu Rudong Lianfeng Petroleum Machinery Co., Ltd. - Buyer Guidance

When sourcing from this supplier, request a material test report (MTR) that confirms the alloy composition (AISI 4140/4340) and heat‑treatment parameters such as quench and temper temperatures. Verify that the product conforms to the applicable API or ASTM standards and ask for a third‑party inspection certificate (e.g., SGS or Bureau Veritas) before shipment. Samples are typically supplied in a standard size (e.g., 100 mm length for slip ring segments) and should be evaluated for dimensional tolerance, surface finish and hardness. Clarify the minimum order quantity (often 1 set for specialized elevators, but bulk orders may start at 5 sets) and confirm lead time, which industry averages range from 30 to 45 days for heat‑treated forged items. Ensure that the supplier can provide the required export documentation, including a Certificate of Origin and any destination‑specific certifications such as CE or API approval.

What types of elevators are listed in the catalogue and under which HS codes?

The catalogue includes CDZ Elevators (HS 8431.49), Sucker Rod Elevators, SE350 Elevators and Type Dd Elevators (HS 8431.43) as well as Type DdZ Elevators (HS 8428.90). All are fabricated from high‑strength alloy steel grades AISI 4140/4340 and are heat‑treated for oil‑field lifting applications.

Which material standards apply to the roller Kelly bushings?

The 4KRBM Roller Kelly Bushings are forged from heat‑treated alloy steel and in the industry are commonly produced to ASTM A193 or API‑5L specifications. Buyers should request a material test report confirming chemical composition and hardness.

What certifications are typically required for petroleum‑field equipment exported from China?

Importers usually require ISO 9001 quality‑management certification, CE marking for equipment used in the EU, and API product standards such as API 6A for well‑head components. These should be confirmed with the supplier before contract finalisation.

How are the products packaged for international shipment?

Standard practice is to pack each unit in a steel‑frame crate or wooden box, secured on pallets to handle weights up to 3 tonnes. The packaging is designed to meet ISPM 15 phytosanitary standards for wood and to protect heat‑treated surfaces during sea freight.

What documentation should a buyer request prior to shipment?

Essential documents include a commercial invoice, packing list, bill of lading, Certificate of Origin, material test report, and any third‑party inspection certificates. For regulated markets, a CE Declaration of Conformity or API approval certificate may also be required.

What are typical minimum order quantities and lead times for the elevators?

Minimum order quantities generally start at one complete elevator unit, but bulk orders often begin at five units. Lead times for heat‑treated forged elevators are typically 30‑45 days from order confirmation, depending on production scheduling.

Can samples be obtained for the slip rings and bearings?

Yes, the supplier can provide standard‑size samples (e.g., 100 mm length for slip ring segments) for dimensional and performance testing. Sample requests should specify the required material grade and surface finish to ensure the test reflects the production specification.