Import 30 Degree For 7/8" 1" Tube Hand Rail Fitting — Buy in wholesale FOB from Supplier in China

This 30 degree rectangular rail base, model ZB1805-22, is an investment-cast stainless steel 316 fitting designed for 7/8 inch (22 mm) and 1 inch tube diameters in marine handrail applications. The part accepts tube at a 30 degree angle from horizontal, a common geometry for stairway and companionway railings on vessels and coastal structures. The body is cast in AISI 316 marine-grade stainless steel, which contains 2-3% molybdenum for enhanced chloride corrosion resistance compared to 304 grade. Surface finish is specified as mirror polish (typically Ra 0.4-0.8 micrometre), achieved through mechanical polishing after casting cleanup. The supplier, Wudi Zhibo Metals Co., Ltd., operates from Binzhou, Shandong Province, and lists this product with MOQ of one piece, suggesting stock availability for immediate shipment in standard sizes.

Investment casting (lost-wax process) allows complex geometry with near-net-shape accuracy, typical dimensional tolerance for marine hardware being CT5-CT7 per ISO 8062 (approximately +/- 0.5 mm for 22 mm tube diameter). The 316 stainless steel specification implies minimum 16% chromium, 10% nickel, and 2% molybdenum content per ASTM A351 or equivalent Chinese standard GB/T 2100. Mirror polishing is a multi-stage abrasive process through progressively finer grits (typically 80-400-800-1500), followed by buffing with compounds to achieve reflective surface. This finish reduces biofouling attachment and simplifies cleaning in saltwater environments. The rectangular base flange provides four-point fixing with countersunk holes, standard pattern for deck-mounted rail stanchions. Wudi Zhibo notes capability article: if custom sizes are required, engineering consultation is available, indicating pattern and tooling modification capability in-house.

Primary applications include yacht and commercial vessel railing systems, marina walkways, poolside handrails, and architectural stainless steel structures in corrosive environments. The 30 degree angle suits stair pitches of 1:2 to 1:1.75 gradient common in marine construction. Buyers include ship chandlers, marine outfitters, stainless steel fabricators, and hardware distributors serving coastal construction. The supplier's broader catalogue encompasses anchors, hinges, deck fillers, fishing rod holders, eye plates, eye bolts, shackles, turnbuckles, thimbles, and carabiners, indicating integrated sourcing potential for rigging projects. Payment terms, exact lead times for non-stock sizes, and certification of material traceability must be confirmed directly with Wudi Zhibo, as these specifics are not stated in the listing. Export packing is described as OPP bag plus carton, standard for hardware to prevent surface damage in transit.

Wudi Zhibo Metals Co., Ltd. is located at No.161 Delixi Industrial Zone, Binzhou, Shandong Province, China. The company operates under a harbor trust tier with zero recorded response rate and zero average response hours, indicating that buyers should expect to initiate contact proactively rather than rely on rapid inquiry turnaround. The supplier positions itself as a professional manufacturer with particular strength in stainless steel marine hardware and rigging hardware, offering both standard catalogue items and custom engineering for dimensions outside the stated 7/8 inch and 1 inch range. The industrial zone location in Binzhou places it within Shandong's metalworking corridor, with access to raw material suppliers and casting subcontractors typical of the region.

The listing does not state year of establishment, number of employees, annual revenue, factory floor area, or specific certifications (ISO 9001, marine classification society approvals from Lloyd's, DNV, or ABS). No client references or export destinations are mentioned. The supplier claims most items can be supplied from stock, and accepts low MOQ, which may indicate inventory-heavy operations or third-party logistics arrangements. Buyers should verify actual manufacturing capability versus trading-only status, inspect quality management documentation, and confirm whether material test certificates (MTC) with mill traceability are available for the 316 stainless steel specified. The broad product range listed suggests either substantial in-house casting and machining capacity, or consolidated sourcing from partner factories.