Custom Sheet Metal Fabrication & Hardware Manufacturer
From custom-engineered sheet metal parts and brackets to complete architectural and structural hardware lines—we deliver precision laser cutting, stamping, bending, welding, and coordinated surface finishing directly from our factory in Hangzhou, China.
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OEM & Custom Drawing Production — Built strictly to your CAD drawings, tolerances, and batch specs
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In-House Fabrication & Finishing — Laser cutting, bending, stamping, welding & custom surface treatments
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Ready-to-Order Hardware Ranges — Fence & gate, barn door, garage door, pergola & furniture hardware
Design & Prototyping
Manufacturing & Assembly
Product Delivery
Virtual Factory Tour
See why we are trusted around the world
How We Support Our Customers
Start with a drawing when the part is defined by your project. Start with a product category when you are purchasing from an established JIANSEN hardware range.
Custom Sheet Metal Fabrication
For sheet metal parts defined by your drawing and application. Include the material, dimensions and quantity to discuss the fabrication requirements.
Standard Hardware Products
For purchasing from six regularly supplied hardware ranges. Identify the product category, model and required quantity to start a product quotation.
Finishing & Assembly Coordination
From laser cutting, bending, stamping, and welding to surface finishing and packaging, we synchronize every process with your timeline.
Who We Do It ForSupporting Businesses from Prototyping to Mass Production
Startups & Innovators
Accelerate product development with rapid prototyping, DFM (Design for Manufacturability) support, and small-batch production—ideal for validating new concepts and preparing for launch.
Growing Businesses & SMEs
Scale up confidently with flexible MOQs, cost-effective manufacturing, and robust quality assurance as your business expands and enters new markets.
Enterprises & OEMs
Rely on JIANSEN for large-scale production, turnkey assembly, integrated supply chain solutions, and global logistics to meet demanding timelines and volume requirements.
Startups
Rapid prototyping and DFM support to accelerate your product launch.
SMEs
Flexible MOQs and cost-effective manufacturing.
Enterprises
Large-scale production and turnkey assembly.
Hardware Ranges for Your Product Line or Project
JIANSEN supplies hardware for doors, gates, furniture, shelving, and pergola connections. Select the relevant range, then identify the dimensions and installation details required for your order.
Fence and Gate Hardware
Hardware for fence and gate installations. Match component dimensions and fixing positions to the gate construction and opening arrangement.
Explore Fence and Gate Hardware
Gate Hinges & Latches
Strap hinges, T-hinges, thumb latches, and Cane bolts built for timber, vinyl, and metal perimeter gates with weather-resistant finishes.
Explore Fence and Gate Hardware
Post Brackets & Drop Rods
Structural rail connectors, anti-sag gate kits, and heavy-gauge drop rods engineered for reliable outdoor fence alignment and stability.
Explore Fence and Gate HardwareBarn Door Hardware
Sliding hardware for barn door applications. Choose the track arrangement around the door dimensions and available installation clearance.
Explore Barn Door HardwareFlat Track Roller Kits
Complete single and double door sliding track sets including J-strap hangers, spacers, door stops, and floor guides for smooth operation.
Explore Barn Door HardwareBypass Systems & Pulls
Heavy-duty bypass track brackets, bifold barn door hardware, flush finger pulls, and matching privacy tear-drop latches.
Explore Barn Door HardwareGarage Door Hardware
Hardware for garage door applications and component sourcing. Identify the door configuration, component dimensions and mounting requirements before ordering.
Explore Garage Door HardwareNumbered Hinges & Fixtures
14-gauge and 11-gauge galvanized sectional garage door hinges (#1 to #6), top fixtures, and bottom corner brackets for residential and commercial doors.
Explore Garage Door HardwareJamb Brackets & Bearing Plates
Stamped steel jamb brackets, flag angles, end bearing plates, and center support brackets punched to standard track mounting patterns.
Explore Garage Door HardwareMetal Furniture Legs
Metal legs for furniture manufacturing and furnishing projects. Select the leg height and mounting dimensions around the furniture structure.
Explore Metal Furniture LegsWelded Tube Table Bases
A-frame, trapezoid, X-frame, and square tube table legs with pre-drilled top mounting plates and powder-coated finishes for desks and benches.
Explore Metal Furniture LegsHairpin & Cabinet Legs
2-rod and 3-rod solid steel hairpin legs and low-profile sofa or cabinet feet manufactured in multiple heights and surface finishes.
Explore Metal Furniture LegsPergola Brackets
Connecting brackets for pergola posts and beams. Match the bracket geometry to the member dimensions and intended connection layout.
Explore Pergola Brackets3-Way & 4-Way Corner Joints
Laser-cut and welded 4x4 and 6x6 timber corner connectors designed for fast assembly of modular outdoor pergolas and gazebos.
Explore Pergola BracketsPost Bases & Knee Braces
Flanged surface-mount post bases, 45-degree structural support braces, and rafter tie-down brackets with outdoor powder coating.
Explore Pergola BracketsShelf Brackets
Support brackets for shelving products and installations. Consider shelf depth, support geometry and the intended fixing arrangement.
Explore Shelf BracketsHeavy-Duty L & Lip Brackets
Thick-gauge flat steel L-brackets and J-brackets with countersunk screw holes designed for open wall shelving and retail displays.
Explore Shelf BracketsGusseted & Hidden Supports
Welded triangle gusset brackets and concealed rod supports built for high load-bearing workbenches, countertops, and storage racks.
Explore Shelf BracketsAbout JIANSEN
Metal Hardware Manufacturing in Hangzhou, China
Established in 2004, JIANSEN is a metal hardware manufacturer based in Hangzhou, China. We supply hardware for doors, gates, furniture, and structural connections, supporting wholesale purchasing and project requirements.
Buyers can start with an existing product from our six core ranges or bring drawings and specifications for a custom hardware discussion. Product references, dimensions, and intended use help define the requirements for each inquiry.
Questions Before You Start
Should I start with a standard product or a custom inquiry?
What should I send for a custom sheet metal inquiry?
What information is useful for a standard hardware quotation?
Send Your Drawing or Product Requirements
Contact JIANSEN about custom sheet metal fabrication or standard hardware supply. Include the part or product, quantity and application to start a quotation discussion.
Useful Details to Include
For custom parts, add a drawing and highlight the critical dimensions. For standard hardware, identify the product category and model or provide a reference image.