Ouzhilun Hardware Group Co., Ltd.

Window & door hardware manufacturer · Ruian, Zhejiang, China

Window hardware systems for aluminium and uPVC windows

Ouzhilun Hardware Group designs, tool-makes and manufactures tilt & turn hardware, espagnolettes, handles, hinges, friction stays and locks — then assembles and inspects every set in our own plant. We supply window fabricators, system houses and hardware distributors with complete sash kits or single fittings.

Explore product systems Send your window schedule
Multi-point locking hardware layout drawing for a tilt and turn window
Complete sash sets: hardware layout, rod lengths and locking-point positions documented for your window type.
10,800 m²Own manufacturing site
25+Window & door hardware series
ISO 9001Quality management system
OEM / ODMTooling and private label
Tooling, stamping, die casting, injection moulding, finishing and assembly under one roof
Engineered for Euro-groove U and C profile systems
Cut-to-length rods with published cutting formulas
Repeat-order consistency from in-house production control

Product systems

Six hardware families, one production chain

Choose a complete tilt & turn kit for a window type, or order individual fittings for replacement and distribution. Materials are zinc alloy, aluminium alloy and stainless steel; finishes include polishing, electroplating, powder coating and anodising.

Tilt & turn hardware systems

Complete sash sets for inward-opening and tilt & turn windows, from micro-ventilation casements to two-side multi-point locking systems.

  • NPD100 / NPD200 single-side two-point series
  • NPD370 / NPD600 / NPD800 multi-point series
  • Aluminium rods cut to your sash dimensions

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Espagnolettes & transmission rods

Corner-driven transmission rods that tie a handle to every locking point across the sash, including anti-misoperation versions.

  • Anti-misoperation transmission rod OHL.FWCDG-02
  • Adjustable mini pull rod OHL.LG-212
  • Corner transmissions, extension rods, keep sets

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Handles & door furniture

Window and door handles for casement, espagnolette, two-point and security-screen applications — in the finish your market expects.

  • Casement and espagnolette handles
  • Seven-shaped handles and two-point lock handles
  • Integrated handles for security-mesh windows

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Hinges, concealed hinges & friction stays

Load-bearing hardware for casement and tilt & turn sashes, in visible and concealed versions.

  • Hinge series for aluminium and uPVC profiles
  • C-groove and U-groove concealed hinges
  • Stainless steel friction stays and hinge stays

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Locks, sash locks & bolts

Non-keyed and keyed locking hardware for window sashes and doors, matched to your profile groove.

  • Two-point locks and crescent (sash) locks
  • Lock bodies and locking keep sets
  • Door strike plates and door bolts

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uPVC fittings & rollers

A dedicated range for uPVC window fabricators: handles, hinges, latches and transmission rods designed for PVC profiles.

  • uPVC handle fittings and combined handle sets
  • uPVC hinges, latches and keep sets
  • uPVC transmission rods and roller series

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Curtain-wall top-hung hardware Sliding window hardware Casement door hardware Thermal-break window fittings Aluminium-uPVC-aluminium casement series

Engineering fit

Built around your profile system, not around a catalogue

Windows differ by market: groove geometry, sash size, opening weight and the number of locking points all change the hardware set. We work from your window schedule instead of selling one fixed kit.

  • Euro-groove compatibility: U-groove and C-groove hardware for standard European profile systems, with backset and keep options.
  • Cut-to-length rods: we publish cutting formulas so fabricators can cut transmission rods to each sash on site and keep stock simple.
  • Anti-misoperation design: block locking devices prevent the handle from being turned while the sash is open or tilted.
  • One set, one sash: rods, locking points, hinges and handle are supplied as a matched set so nothing is short on the line.
20+ years of window hardware production 87 patents in the group portfolio
Aluminium transmission rod cutting formula drawing for tilt and turn window installation

Manufacturing

From tool design to packed sets — eight steps we control ourselves

Vertical integration is what keeps tolerances, finishes and delivery dates under our control rather than a supplier's.

Design & toolingProduct and mould design in-house, based on the profile system and the customer's window type.
StampingProgressive-die stamping of rods, keep plates and brackets.
Die castingZinc and aluminium alloy castings for handles, lock bodies and hinge parts.
Injection mouldingEngineering-plastic components for uPVC fittings, rollers and caps.
Surface finishingPolishing, electroplating, powder coating and anodising to the finish your market requires.
AssemblySets assembled and matched to the order: sash kits, spare-part packs or bulk fittings.
InspectionIncoming material, in-process and final checks under our ISO 9001 quality management system.
Packing & exportIndustrial packing for container shipment, or retail-ready packing for distribution.

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Technical support

Drawings and installation documents that ship with the goods

Fabricators get the layout drawings, cutting formulas and match-line references they need before the first sash is assembled — and replacement drawings for repeat orders.

Multi-point locking system layout drawing for a tilt and turn window
Complete multi-point locking layout for a tilt & turn sash
Transmission rod with block locking device
Transmission rod with anti-misoperation block locking device
Window handle with adjustable pull rod
Handle with adjustable pull rod for fine sash adjustment
Aluminium rod cutting formula
Aluminium rod cutting formula for on-site fabrication
Sash and frame match line reference drawing
Sash-to-frame match line reference
Tilt and turn hardware system layout drawing
System layout drawing for a tilt & turn window set

Send us your window schedule — we will propose the hardware set

Tell us the profile system, sash sizes and opening type (or simply attach a drawing). You will get a recommended hardware set, a quotation and, where required, a sample set for trial installation.

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