Tianjin In Rich Casting Co., Ltd. | Precision Manhole Covers & Drainage Solutions

Company Introduction

The history of Tianjin In Rich Casting Co., Ltd. can be traced back to the 1980s at the 'Jin’an Foundry' in Xian County, Hebei Province. What began as a modest manhole cover manufacturer has evolved into a global leader in precision casting solutions.

In 2013, we established a new, advanced manhole cover factory with strategic partners, introducing automated production lines and modern quality control systems. Today, we specialize in manufacturing manholes, drainage pans, steel gratings, and custom machine parts for infrastructure and industrial applications.

Our commitment to innovation and quality has enabled us to serve clients across Asia, Africa, the Middle East, and South America, with continuous investments in technology and sustainable manufacturing practices.

View Our Products

Our Products

High-strength, durable castings engineered for longevity and safety in urban infrastructure, industrial facilities, and public works projects.

Drainage Grate

Heavy-duty cast iron grates designed for efficient water drainage in streets, parking lots, and industrial zones. Available in multiple load classes and finishes.

Material: Ductile Iron / Cast Iron
Standards: EN124, ASTM A48
Load Class: A15 to F900
Finish: Black Painted, Galvanized, Epoxy Coated

Manhole Cover

Precision-engineered manhole covers with anti-theft, anti-slip, and noise-reduction features. Ideal for municipal sewer, telecom, and utility access points.

Material: Ductile Iron (GGG50), Grey Iron
Diameter: 600mm, 700mm, 800mm
Load Class: B125, C250, D400
Features: T-Handle, Lockable, Rubber Gasket

Steel Grating

Load-bearing steel gratings for walkways, platforms, and industrial flooring. Corrosion-resistant with high strength-to-weight ratio.

Material: Carbon Steel, Stainless Steel
Type: Welded, Press-Locked, Serrated
Size: Customizable Panels
Finish: Hot-Dip Galvanized, PVC Coated

Custom Cast Machine Parts

OEM/ODM casting services for industrial machinery components. From prototypes to mass production with tight tolerances.

Process: Sand Casting, Shell Molding
Weight Range: 1kg – 500kg
Tolerance: ±0.5mm
Applications: Automotive, Agriculture, Mining

Composite Manhole Cover

Lightweight, non-conductive composite covers ideal for electrical vaults, telecom chambers, and areas requiring non-metallic solutions.

Material: FRP (Fiberglass Reinforced Plastic)
Weight: 30-50% lighter than iron
Load Class: Up to D400
Benefits: Corrosion-proof, Insulating, Easy Installation

Trench Drain System

Complete linear drainage solutions with cast iron or polymer concrete channels and removable grates for high-flow applications.

Channel Material: Concrete, Polymer, Cast Iron
Grate Width: 100mm – 300mm
Length: 500mm – 1000mm per section
Applications: Airports, Factories, Car Washes

Catch Basin & Drain Pans

Pre-cast drainage basins with integrated grates for stormwater management and sump applications.

Material: Ductile Iron, Concrete
Size: 400x400mm to 1200x1200mm
Depth: 300mm – 1000mm
Features: Sediment Traps, Overflow Ports

Access Covers (Indoor/Outdoor)

Architectural and utility access covers for floors, walls, and ceilings in commercial and residential buildings.

Material: Cast Iron, Stainless Steel, Aluminum
Shape: Square, Rectangular, Round
Finish: Polished, Brushed, Painted
Applications: HVAC, Electrical, Plumbing

Why Choose In Rich Casting?

Decades of casting expertise, cutting-edge technology, and a relentless focus on quality set us apart.

Factory Direct Pricing

Eliminate middlemen. We manufacture and export directly, offering competitive pricing without compromising quality.

Advanced Manufacturing

Automated production lines, in-house welding, and robotic painting ensure consistency and precision in every product.

Quality Assurance

Rigorous testing for load capacity, corrosion resistance, and dimensional accuracy. Compliant with international standards.

Global Export Experience

Shipped to over 30 countries. Experienced in logistics, documentation, and customs clearance for seamless delivery.

Latest News & Updates

Stay informed about our innovations, partnerships, and industry advancements.

Company Philosophy

Commitment to Quality and Global Service

At In Rich Casting, we are committed to the highest standards and quality, providing the best manhole cover solutions to customers around the world. We understand that as an essential part of urban infrastructure, our products must ensure safety, durability, and reliability.

April 27, 2025

Technology Update

Advancing 3D Printing in Casting

Tianjin In Rich International Trading Co., Ltd. continues to drive product excellence through ongoing technological upgrades in manhole cover manufacturing. Our in-house welding and painting technologies are now integrated with 3D modeling and rapid prototyping for faster innovation cycles.

April 14, 2025

Visit & Collaboration

Strengthening Ties with Thai Partner

In December 2016, Tianjin In Rich Casting Co., Ltd. visited its Thai customer MCHH to gain a deeper understanding of its products and explore opportunities for cooperation, particularly in promoting high-performance drainage solutions in Southeast Asia.

June 12, 2023

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Factory Direct.
Precision Made.
Quality You Trust.

Company Introduction