Import 304 Stainless Steel Flange — Buy in wholesale FOB from Supplier in China

This 304 stainless steel flange is a forged or cast connecting element for piping systems, produced by Tianjin Dalipu Oil Country Tubular Goods Co., Ltd in Jinghai, Tianjin, China. The listing specifies a diameter range of 25.4 to 50.8 mm and a thickness of 5 mm, with surface protection by anti-rust oil. It conforms to multiple standards including DIN, GB, ISO, JIS, BA and ANSI, giving buyers flexibility across project jurisdictions. The nickel-white colour indicates an untreated or lightly passivated austenitic surface typical of 304 grade material.

304 stainless steel contains 18% chromium and 8% nickel by standard composition, offering good resistance to oxidisation and moderate chemical exposure. The 5 mm thickness suits low-to-medium pressure classes rather than heavy-wall high-pressure systems. Anti-rust oil is a common temporary protective coating for carbon and stainless steel flanges in transit and short-term storage; buyers should specify whether they require additional pickling, passivation or electropolishing for hygienic or aesthetic applications. The multi-standard certification (DIN, GB, ISO, JIS, BA, ANSI) suggests the manufacturer maintains tooling for several flange face types and drilling patterns, though buyers must verify which standard governs the actual unit supplied.

Primary buyers include mechanical contractors, building services engineers and machinery manufacturers who need corrosion-resistant joints in structural or fluid-handling systems. The 25.4 to 50.8 mm diameter range covers nominal pipe sizes roughly from DN15 to DN40. For import trade, confirm with Tianjin Dalipu whether the quoted dimensions refer to nominal or actual outside diameter, and whether the 5 mm thickness is uniform across all listed sizes. Packaging, MOQ, Incoterms and lead time are not stated in the source data and should be clarified before placing an order.

Tianjin Dalipu Oil Country Tubular Goods Co., Ltd is located in Jinghai District, Tianjin Municipality, China, with postal code 301600. The company operates under a harbour trust tier with a reported response rate of 0.00% and an average response time of 0 hours, which indicates either a new listing, inactive account or data capture issue rather than necessarily poor service. Buyers should test responsiveness through direct enquiry before relying on this channel alone. The supplier's name references oil country tubular goods (OCTG), suggesting historical or current specialisation in oilfield pipe and coupling products, with stainless steel flanges representing a related or derivative product line.

The listing provides no information about years established, factory size, annual output, quality management system certification, or named clients. This absence is not unusual for a marketplace listing, but it means buyers must conduct their own due diligence. Request a company profile, business licence, and ISO 9001 certificate if claimed. Verify the registered address against the actual shipping address to confirm you are dealing with the manufacturer or a duly authorised trading arm, not an unrelated intermediary. The Jinghai location places the company within the Tianjin steel manufacturing belt, a genuine industrial cluster, which is a positive geographic signal.