Vortex Qingdao Co., Ltd.

China, Qingdao hosts Vortex Qingdao Co., Ltd., which currently lists five distinct products. The catalogue is organized under three top categories - flanges, iron pipes, and industrial couplings - reflecting the company’s focus on pressure‑handling hardware for water, gas and sewage networks. Each product aligns with a specific HS‑code family used in customs declarations, such as HS 7303 for ductile iron pipes and HS 7307 for pipe fittings and adaptors. The supplier’s portfolio includes both stainless‑steel and ductile‑iron components, covering repair clamps, pipe sections, fittings, couplings and adaptors.

The listed items consist of a stainless‑steel repair clamp, a ductile‑iron pipe (HS 7303.00) made from nodular graphite iron to ASTM A536 Grade 65‑45‑12, a ductile‑iron pipe fitting (HS 7307.19) of Grade 400‑15 per ASTM A536, a Ranger coupling without a specific HS code, and a Ranger adaptor (HS 7307.99) also in ductile iron. Material specifications are explicitly given for the cast‑iron products, while the stainless‑steel clamp follows typical 304/316 grades used for corrosion‑resistant repairs. All five items are recorded under the supplier’s “imported” tier, indicating they are sourced for resale to international buyers.

The catalogue’s ductile‑iron pipe conforms to ASTM A536 65‑45‑12, a standard that defines a minimum tensile strength of 65 MPa, yield strength of 45 MPa and elongation of 12 %. In the global market such pipes are offered in nominal diameters from 100 mm to 1200 mm, pressure classes ranging from PN10 to PN40, and are often supplied with flanged ends to ISO 3183 or API 5L specifications. The pipe fittings and adaptors classified under HS 7307 are typically produced as socket‑type or threaded couplings, with wall thicknesses that meet ISO 14692 for ductile‑iron pressure piping. Stainless‑steel repair clamps are generally fabricated from 304 or 316 stainless steel, featuring a clamp force calibrated to 5 kN - 10 kN for pipe repair applications. The Ranger coupling series is used for quick‑connect applications in water and sewage systems, commonly sized to match DN 50‑DN 300 pipe dimensions.