🌍 Haimen City Mingzhu Steel Ball Co., Ltd. Since 1992 ⭐ 34+ Year Industry Experience ✓ Verified Elite Supplier
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Verified Project Evidence

Project Cases

Explore 32 verified project cases across 32 application sectors worldwide, covering high-purity valves, corrosion-resistant bearings, precision spindles, marine hardware and custom ODM components for demanding industries.

32+Verified cases
1Countries & regions
32Application sectors
96%On-time delivery

Customer Success Stories

Filter by industry, market or product type to find a comparable implementation.

32 cases shown
GLOBAL
Severe-corrosion ball valves handling strong acids (HCl, H2SO4) and mixed acidsProduct

Chemical & Petrochemical Plant OEM

Exceptional resistance to strong acid and localized corrosion; minimal valve trim replacement

120,000 pcs/yrQuantity
5 yearsDuration
GLOBAL
High-speed motorized grinding/high-frequency spindlesProduct

High-Speed Spindle & Machine-Tool OEM

Stable performance at high DN; extended spindle service interval

40,000 pcsQuantity
3 yearsDuration
GLOBAL
Aircraft engine main-shaft and accessory high-speed bearingsProduct

Aerospace Engine Bearing Supplier

Retained hardness & dimensional stability at elevated temperature; qualified for jet-engine use

60,000 pcs/yrQuantity
5 yearsDuration
GLOBAL
High-pressure RO desalination valve and pump componentsProduct

Desalination Plant EPC Contractor

Outperformed 316 in aggressive chloride service; reduced replacement frequency

90,000 pcsQuantity
3 yearsDuration
GLOBAL
Subsea and topside valve trim in North-Sea offshore installationsProduct

Offshore Oil & Gas Operator

PREn >34 resistance to chloride pitting/crevice corrosion; reliable in seawater

180,000 pcsQuantity
5 yearsDuration
GLOBAL
Buoyancy / float assemblies and marine marker floatsProduct

Marine & Floating Equipment OEM

Controlled wall thickness & leak test ensured long-term buoyancy

12,000 pcsQuantity
3 yearsDuration
GLOBAL
Space-frame nodes and architectural curtain-wall joints in iconic buildingsProduct

Architectural & Structural Fabricator

Lightweight yet structurally capable; enabled bold architectural geometries

30,000 pcsQuantity
5 yearsDuration
GLOBAL
Decorative ball joints and appliance hardware requiring cosmetic finishProduct

Consumer Electronics & Appliance Maker

High-gloss, durable finish improved product aesthetics and corrosion life

500,000 pcsQuantity
2 yearsDuration
GLOBAL
Decorative and functional ball elements in automotive interior hardwareProduct

Automotive Trim & Hardware Supplier

Uniform bright plating; passed customer salt-spray specification

3,000,000 pcs/yrQuantity
4 yearsDuration
GLOBAL
Instrumentation ball valves for oilfield surface equipmentProduct

Oil & Gas Equipment Supplier

Withstood sour-service surface conditions; reliable sealing performance

Project, 70 KpcsQuantity
3 yearsDuration
GLOBAL
Drilled ball valves and hydraulic/pneumatic rotary actuatorsProduct

Specialty Valve & Hydraulic OEM

CNC-drilled hole position accuracy eliminated rework at customer assembly

Project, 150 KpcsQuantity
4 yearsDuration
GLOBAL
Reference spheres and precision kinematic mounts in metrology instrumentsProduct

Optical & Metrology Instrument Maker

Exceptional sphericity & surface finish; directly usable as measurement reference

Project, 90 KpcsQuantity
3 yearsDuration
GLOBAL
Ultra-high-precision linear guides and vacuum-stage bearing assembliesProduct

Semiconductor Equipment OEM

Sub-micron roundness helped customer meet equipment accuracy targets

Annual, 200 Kpcs/yrQuantity
4 yearsDuration
GLOBAL
Legacy aircraft accessory overhaul where OEM balls were obsoleteProduct

Aerospace MRO Provider

Reverse-engineered obsolete size; kept legacy aircraft platforms serviceable

Project, 25 KpcsQuantity
2 yearsDuration
GLOBAL
Custom instruments and low-volume specialty bearing assembliesProduct

Specialty Bearing & Instrument Maker

Filled a size gap no catalog supplier could; enabled customer to finish a niche product line

Project, 60 KpcsQuantity
3 yearsDuration
GLOBAL
Custom pivot joints and end-effector linkages in industrial robotsProduct

Robotics & Automation Integrator

Drawing-based custom geometry; consistent roundness improved motion repeatability

Project, 40 KpcsQuantity
2 yearsDuration
GLOBAL
Precision spherical seats and pivots in agricultural & mining machineryProduct

Heavy Machinery OEM

Tight tolerance enabled direct assembly without secondary grinding

Project, 80 KpcsQuantity
4 yearsDuration
GLOBAL
Furniture castors, ball-bearing slides and cabinet hardwareProduct

Furniture & Hardware Manufacturer

Cost-competitive without sacrificing functional durability

Project, 1.5 MpcsQuantity
3 yearsDuration
GLOBAL
Conveyor ball transfers, drawer slides and general industrial hardwareProduct

General Industrial Distributor

Reliable, economical supply; helped distributor consolidate multiple SKUs from one source

Annual, 10 Mpcs/yrQuantity
5 yearsDuration
GLOBAL
Food-contact equipment and kitchen hardware in hospitality sectorProduct

Commercial Kitchen Equipment OEM

Good corrosion & cleanability in humid, high-salt Gulf environment

Project, 300 KpcsQuantity
3 yearsDuration
GLOBAL
Sanitary ball valves and household plumbing fittingsProduct

Household & Sanitaryware Brand

Cost-effective corrosion-resistant solution with broad market acceptance

Annual, 2 Mpcs/yrQuantity
5 yearsDuration
GLOBAL
Sanitary ball valves and CIP/SIP process equipment in pharma & food plantsProduct

Pharmaceutical & Food Equipment Maker

Met hygienic-design requirements; smooth finish facilitated cleaning validation

Project, 400 KpcsQuantity
4 yearsDuration
GLOBAL
Marine deck hardware, boat fittings and offshore corrosion-resistant assembliesProduct

Marine & Offshore Equipment OEM

Excellent seawater corrosion resistance; zero chloride-stress complaints

Annual, 1.5 Mpcs/yrQuantity
6 yearsDuration
GLOBAL
Aerospace secondary-control and accessory bearings (corrosion-critical)Product

Aerospace Bearing Supplier

Met stringent corrosion + hardness specs; supported customer AS9100 qualification

Project + annual, 120 KpcsQuantity
3 yearsDuration
GLOBAL
Dental handpieces and surgical instrument joints requiring sterilizabilityProduct

Medical Device Manufacturer

Withstood repeated autoclave cycles; high hardness and mirror-like finish extended instrument life

Ongoing, 350 Kpcs/yrQuantity
5 yearsDuration
GLOBAL
Deck fittings and marine-grade hardware exposed to seawater sprayProduct

Marine Hardware OEM

Adequate corrosion performance at competitive cost; smooth surface finish

Project, 200 KpcsQuantity
2 yearsDuration
GLOBAL
Corrosion-resistant valve trim and sanitary pump componentsProduct

Valve & Pump Manufacturer

Good balance of hardness and corrosion resistance; lower total cost vs 440C for moderate-duty service

Annual, 900 Kpcs/yrQuantity
4 yearsDuration
GLOBAL
High-RPM power-tool spindle bearingsProduct

Power-Tool OEM

Improved tool life under high-speed duty; zero field failures attributed to balls

Project batch, 600 KpcsQuantity
3 yearsDuration
GLOBAL
Wheel-hub and transmission bearings for North-American automotive platformsProduct

Automotive Component Supplier

Stable quality across shipments; customer reduced incoming inspection workload

Annual contract, 5 Mpcs/yrQuantity
4 years (ongoing)Duration
GLOBAL
High-speed spindle and precision industrial bearingsProduct

Industrial Bearing OEM

Met tight roundness/roughness specs; helped customer qualify for a premium automotive Tier-2 program

Single project, 1.2 MpcsQuantity
3 years (project + follow-on)Duration
GLOBAL
Deep-groove ball bearings for electric-motor and automotive wheel-hub applicationsProduct

Tier-1 Bearing Manufacturer

Reduced bearing noise & vibration; stable, on-time delivery enabled customer to shorten lead time and lower safety stock

Ongoing annual supply, 8 Mpcs/yrQuantity
5+ years (continuous supply)Duration
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