从China供应商批发进口304 Knitted Hose — FOB条款

Ningbo Huahua Sanitary Ware produces 304 stainless steel knitted hose with an annular corrugated core and outer wire braid reinforcement, designed for industrial piping systems requiring pressure containment and vibration isolation. The SS304 construction (UNS S30400, 18% chromium, 8% nickel) provides oxidation resistance up to approximately 870 °C in continuous service, though actual temperature limits depend on pressure, media and cycle frequency. The annular corrugation profile allows axial, lateral and angular deflection to accommodate thermal expansion and piping misalignment, while the knitted wire braid restrains the hose from longitudinal extension under internal pressure. The supplier indicates compliance with ASTM and ASME flange standards for end connections, though specific flange ratings and facing types are not detailed in the source material.

The hose core is formed from strip stock into annular corrugations with typical wall thickness of 0.15-0.25 mm for standard pressure classes, though the supplier does not specify exact dimensions. Outer braid is typically 304 stainless wire in plain or tucker weave pattern, with braid angle and coverage percentage determining pressure rating and flexibility trade-offs. For industrial service, typical pressure ratings range from 10 bar for large diameters to 150 bar or higher for small-bore high-pressure variants, with burst pressure generally 4:1 to 5:1 over working pressure per ISO 10380 or EJMA standards. The source mentions chemical processing, oil and gas, power generation and steam line applications, implying design for hydrocarbon service, saturated steam and process chemicals where elastomeric hoses would degrade.

Buyers typically deploy these hoses as flexible connectors between fixed equipment (pumps, compressors, heat exchangers, turbines) where rigid piping cannot accommodate movement from thermal growth, settlement or vibration. The steam service mention suggests suitability for saturated steam up to typical limits of 150-200 °C for braided metal hoses, though superheated steam or cyclic thermal shock may require Inconel 625 or 321 stainless alternatives. Ningbo Huahua Sanitary Ware indicates global export experience with standard industrial packaging. The Yuyao location places the manufacturer within the Ningbo port economic zone, offering logistical access to Shanghai and Ningbo-Zhoushan ports for containerised or breakbulk shipment.

Ningbo Huahua Sanitary Ware Co., Ltd. is located at Wuma Industrial Zone, Lubu Town, Yuyao, Ningbo, China, placing it within the Greater Ningbo manufacturing region known for plumbing, sanitary ware and metal hose production. The supplier holds an imported tier classification with harbour trust tier status, and shows a 0.00% response rate with zero average response hours on the platform. This profile suggests limited active engagement with inbound platform enquiries, so direct outreach via the provided address or established trade channels may be necessary for technical discussion and quotation.

The company name references sanitary ware, yet the product description focuses on industrial flexible metal hose for chemical, oil and gas, and power generation markets. This indicates either a diversified manufacturer or a trading operation sourcing from specialised hose fabricators. The source does not state ISO 9001 certification, ASME U-stamp qualification, pressure equipment directive (PED) compliance, or specific welding procedure qualifications for the corrugated core-to-end fitting joints. Buyers should request factory audit reports, welding operator certifications and pressure test records, as these are critical for safety-critical applications in hydrocarbon and high-pressure steam service.