About us

We at VALLEGE Gratings care deeply about our clients, employees, and craftsmanship.
As a professional steel bar grating manufacturer with 20 years of experience, Yantai Wanjie New Material Co., Ltd. (operating under the VALLEGE brand) has been specializing in manufacturing and exporting steel bar gratings since its establishment in 2004.
From the beginning, we have sought to bridge the gap between industrial requirements and practical applications. Guided by our core principles of "Health, Happiness, Trust, and Mutual Benefit", we have built an employee-centered, full-service grating company that prioritizes strong client relationships and premium product quality.
Our commitment at VALLEGE Gratings encompasses both high-quality product manufacturing and exceptional customer service. Our team consists of grating experts with years of hands-on manufacturing experience. The sales staff, possessing firsthand knowledge of grating production processes, stand ready to address all your technical inquiries.
We are equipped to handle projects of any scale or timeline. Our design team specializes in value engineering and cost-efficient solutions, utilizing advanced CAD systems to produce clear shop drawings, erection diagrams, and load capacity calculations. Our rigorous quality control system includes:
· Raw material testing with full traceability
· Galvanizing and coating inspections
· Cross bar strength verification
· Strict compliance with project specifications
Through the implementation of advanced digital systems, we provide real-time project management while maintaining sustainable operations. Our paperless workflow integrates sales, engineering, production planning, workshop operations, logistics, and quality control. This digital transformation not only demonstrates our environmental responsibility but also enhances project tracking accuracy, minimizes errors, and ensures timely delivery.
As a leading Chinese manufacturer based in Eastern China, we adhere to the highest business standards. VALLEGE Gratings cordially invites you to consult our expert team for all your grating requirements.
We would be honored to welcome you as our valued customer.
You can rely on us.
Established in
Factory area
Steel grating products
Sold Countrys and region
Our Capabilities
Our innovative, state-of-the-art facilities enable us to produce a complete range of products. We combine the latest technology with advanced material handling systems to ensure consistent, high-quality production.
We maintain a large inventory of raw materials, processed in-house into finished products. This allows a rapid response to requests for cost-saving, custom-sized products.
The unparalleled flexibility of our manufacturing facilities eliminates the need to extend production schedules and enables us to produce a full range of products both in a timely and cost-effective manner.
Combining these advantages with an experienced team dedicated to manufacturing excellence, we are ready to partner with every customer to promptly deliver projects of any scope or timeline.
Sales Consulting & Estimating
Value Engineering & Design Solutions
Rapid Proposal Development (24h turnaround)
End-to-end Product Design Support
Technical Problem Solving Services

Detailing & Project Management

Custom detailing software based on AutoCAD platform
Value engineering review for all projects
Precision drafting with clear documentation
Real-time project management
Manufacturing
Specially-designed forge welders
Full line of press-lock gratings
Extensive line of heavy-duty products
Large inventory of prime material
All processed in-house
Technology software for cost savings and waste reduction
500+ tons per week capacity
Domestic material sourced

Fabrication

Live project tracking: Monitor the status of all projects in real time
Paperless workshop: Operate within a fully digital workshop environment
Specialized architectural divisions: Dedicated divisions for Press-Lock, Hand-Made, and Custom designs
Full grating fabrication: Produce Carbon Steel and Stainless Steel grating
Heavy-duty grating capabilities: Utilize multiple machine presses and specialized tooling for Heavy Duty Grating production
Testing & Experiment
Deflection measurement under static load testing for each batch of steel grating
Deflection measurement accuracy: 0.01 mm
Final inspection of zinc layer and paint film coating thickness
All testing information will be shared with customers
Credible testing data
Testing data that can guide the projects

Management & Credit
·ISO 9001:2015 Certified (Quality Management System)
·ISO 45001:2018 Certified (Occupational Health and Safety Management System)
·ISO 14001:2015 Certified (Environmental Management System)
·AAA Enterprise Credit Rating
History
Because of persistence, and also for the dreams in our hearts
A group of like-minded people gather together
We cherish the brand forged through years of hard work
And treasure every hard-won honor
In the face of applause
We neither linger nor hesitate
Instead, we turn it into motivation to progress —
Every step leaves its mark
As we forge ahead with unwavering resolve
Striving to transcend ourselves

2004.1
In January 2004, Yantai Wanjie Metal Grill Company was established

2004.6
In June 2004, we leased a 500㎡ factory in Xingfu 12 Village, and expanded it to 1500 ㎡ later

2007.3
In March 2007, leased a 2000㎡ factory building again

2011
In October 2011, relocated to Yuansheng Steel Pipe Factory

2013.8
In August 2013, construction began on a new 7000m2 production base, which lasted for 4 years

2015.9
In September 2015, we were renamed Yantai Wanjie New Materials Co. Ltd, and successfully listed on the Qilu Equity New 4th Edition, with Shandong Provincial State owned Assets Supervision and Administration Commission becoming one of the shareholders

2017-2018
From 2017 to 2018, various production departments of the company gradually removed to new factory

2024.7
In July 2024, the company held its 20th anniversary celebration

2024.10
In October 2024, all employees took the "Dreams Come True" cruise ship to Japan and South Korea for tourism
