Jilin Senfeng Pipe Co., Ltd.

Jilin Senfeng Pipe Co., Ltd. operates in Jilin province, China and lists 135 active products across a spectrum of ductile‑iron pipe and fitting items. The catalogue includes items such as Di Double Flange 90 Duckfoot Bend (HS code 7307.19, material Grade 400‑15), Di Socket Spigot Pipe K9 L=6 m (HS code 7303.00, DI material), Di Flange Pipe K9/12 (HS code 7303.00, SG Iron), Di Flexible Coupling (HS code 7307.99, EN‑GJS‑400‑15 / ASTM A536), and a variety of manhole covers, bolts, nuts, and check valves. Each entry references the appropriate HS‑code family for ductile‑iron products, indicating compliance with the standard tariff classifications used for cast‑iron pipework. The supplier’s top categories cover Agriculture, Flanges, Industrial Valves & Gauges, Iron and Steel Pipes, Pipe Valves, Nuts, and Manhole components, reflecting a focus on infrastructure‑related metal goods.

The product list also contains generic items such as Di Collar, Di Socket Spigot Tee With Socket Branch, Di Double Socket Level Invert Tee, and Di Air Valve, which are listed without HS codes but fall under the same material group of ductile iron. Across the 135 SKUs, the material specifications frequently cite ISO 1083 grades (e.g., GGG40, GJS 400‑15, GJS 500‑7) and ASTM A536 compositions, indicating that the items are manufactured to internationally recognised ductile‑iron standards. The inclusion of both pipe sections and fittings suggests the supplier can support complete pipeline systems from raw pipe to connection hardware.

The catalogue presents a core set of ductile‑iron pipe products such as K9 and K9/12 pipe grades, double‑flanged duck‑foot bends, and flexible couplings, all defined by HS codes 7303.00 for pipe sections and 7307.19/7307.99 for fittings and couplings. In the global market, ductile‑iron pipe is typically supplied in grades 400‑15, 500‑7 or higher, with wall thicknesses measured in millimetres and pressure ratings expressed in PN (e.g., PN 10, PN 16). Common specifications include a minimum tensile strength of 400 MPa, elongation of 8 % and corrosion‑resistant internal linings for water or sewage applications. Buyers also look for dimensions such as nominal diameter (DN) ranging from 80 mm to 1200 mm and lengths of 6 m or 12 m per standard shipping bundle.

Industry practice for ductile‑iron fittings includes compliance with ISO 1083 (Class GGG, GJS) and EN‑10217‑1 for pipe, while couplings often meet EN‑1092‑1 or ASTM A536. Typical product variants include flanged tees, socket‑spigot tees, duck‑foot bends, and check or butterfly valves, each requiring precise machining tolerances (±0.2 mm on bore diameter) and surface finishes (Ra ≤ 1.6 µm). The supplier’s inclusion of manhole covers and nuts aligns with standard municipal infrastructure kits, where cover dimensions are matched to pipe diameters and bolt grades conform to ISO 898‑1 (property class 8.8 or 10.9).