50mm Backset Home Interior Door Office Door Mortise Lock Body
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Product Highlights
- Customizable Backset & Thickness: Backset and door thickness fit are fully customized to meet specific installation requirements.
- High Durability & Long Life: Nylon deadbolt and iron plate construction ensures anti-corrosion, silent operation, and long service life.
- Professional OEM/ODM Service: Accepts OEM orders with customized logo, packaging, color, and graphic designs for brand building.
- Strict Quality Control: CNC processed with +/- 0.001mm tolerance and 100% inspection at critical stages for precision.
- Comprehensive Certifications: Products certified by CE, TUV, ISO, MA, 14000, and CNAS, meeting international safety standards.
- Multi-Scenario Application: Suitable for household doors, bedrooms, gates, apartments, hotels, and security doors.
- Reliable After-Sale Support: Provides 1-year warranty, real-time installation guidance, and 15-day delivery tracking service.
- Advanced Manufacturing: Manufactured by Wenzhou Guangda Lock Industry with automatic production lines and professional R&D.
Product Attributes
- Material
- Iron, Zinc, Nylon
- Type
- Mortise Lock
- Style
- Modern
- Model NO.
- GD4004
- Shape
- Mortise Door Lock
- Anti-theft Standard
- A
- Part
- Lock
- Backset
- Customized
- Door Thickness Fits
- Customized
- Usage
- Household Door Locks, Bedroom, Gate
- Certificate
- CE/TUV/ISO/Ma/14000/CNAS
- Plate
- Iron
- Deadbolt
- Nylon
- Flower
- Zinc
- Lock Case
- Iron
- OEM
- Yes
- Product Feature
- Silent, Anti-Corrosion, Long Service Life
- Advantage
- First-Hand Price Hardware
- Transport Package
- as Per Your Requirement
- Specification
- As You Need
- Trademark
- Customized Logo
- Origin
- Wenzhou, Zhejiang
- Package Size
- 26.00cm * 12.00cm * 4.00cm
- Package Gross Weight
- 1.000kg
Product Images of 50mm Backset Home Interior Door Office Door Mortise Lock Body
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Product Description
Model: 8550
| Item No. | GD4004 |
| Plate | IRON |
| Dead Bolt | NYLON |
| Flower | ZINC |
| Lock Case | IRON |
| Product name | Lock body |
| After sale service | 1 year |
| OEM | Accept |
| Finish | SN/GP/BP ..ECT. |
| Length | Customized |
| Usage | Main Gate, Security door |
| Application | Great for apartment, home, hotel |
| Sample | within 30 days |
| Packing | As per your requirement |
| Color | As pic or customized |
| Logo | As per your requirement |
| Certificate | CE/TUV/ISO/MA/14000/CNAS |
| MOQ | 500 PCS |


-Certificate: CE/TUV/ISO/MA/14000/CNAS
-Highly tested mechanism for longer life
-Durable Treatment
-Assembled and Manufactured with Automatic Production Lines
-Processed by CNC machines (tolerance level +/- 0.001mm)
-Full quality controls in mass production (100% inspections in each critical stage)
-More Finishes Available
-Built-in Protections: Anti-theft, Anti-press, Anti-rust, Anti-violence
-Transportation: As per your requirement
-Customization: logo/packaging/Color, Graphic customization and More Dimensions.
-Cooperation partner: We have front-line customers in markets including China, Central Asia, Southeast Asia, Eastern Europe, Western Europe, the Middle East and South America, but we are unable to disclose information about our customers due to the protection of their supply chains. If we are lucky enough to be your partner, we also have protection measures for you.
-Processional real time guidance of installation
-15 days tracking service during delivery
-Reliable logistics partners will reassure our customers
Wenzhou Guangda Lock Industry Co„Ltd is a professional manuracturer of the lock business in China. Strength of the company, advanced technical equipment, has a strong equipment productivity, precision machinery and digital machining equipment, and professional lock technology to design and develop new products and expand international markets. According to customer demand, tailor-made production of various types of lock products to meet customer demand.
The company has advanced equipment, strict product testing sophisticated lock in accordance with international standards of production and testing. Locks through the national quality supervision department, all products meet national standards by the praise of our customers. Selling products, exported to Southeast Asia, Europe, the Middle East and other countries and regions.
We live on the concept of "lundamental to the quality, technology and innovation, were developed in good faith. Sincere services to domestic and foreign customers, we sincerely welcome you to becoms our partner Join hands in creating the lock of art galleries, the relentless pursuit of higher and better quality.


Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Our delivery time is about 35-45 days.
Q: How long is your production time?
A: Our production time is about 30 days.
Q: What's your warranty?
A: 600,000 times of opening-closing(min 5 years) and 1 years warranty of our products.
Q: Which is the shipping way to choose?
A: Sample or small orders will be sent by air; it is is more than 1 ton or 1 cbm it is better to arrange by sea.
Q: Do you provide samples ? is it free or extra ?
A: 1.New customers who have confirmed their orders can get free samples without paying any costs including shipping.
2.New customers who want to test the product quality before confirming the order need to communicate with us and bear the transportation cost.
3. We will regularly push the pictures of new products to our regular customers, so the regular customers who are interested in new products can get free samples at the first time without paying any costs including shipping cost.
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASI2131232". Items marked "" are certified.
Company Profile
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.
Guangda is a professional manuracturer of the lock business in China. Strength of the company, advanced technical equipment, has a strong equipment productivity, precision machinery and digital machining equipment, and professional lock technology to design and develop new products and expand international markets. According to customer demand, tailor-made production of various types of lock products to meet customer demand.
The company has advanced equipment, strict product testing sophisticated lock in accordance with international standards of production and testing. Locks through the national quality supervision department, all products meet national standards by the praise of our customers. Selling products, exported to Southeast Asia, Europe, the Middle East and other countries and regions.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- 368 Jihong Road, Louqiao street, Ouhai District, Wenzhou City, Zhejiang Province
-
Plant Area
- 17000 square meters
-
Number of Employees
- 151
-
Registered Capital
- 1,000,000 RMB
-
Terms of Payment
- T/T
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: one month -
Nearest Port
- Ningbo Port, Shanghai Port
Our Production Capability & Technical Expertise
-
Main Products
- Locks & Lock Accessories
-
Production Machines
- Automatic Cutting Facility, Automatic Lock Cylinder Assembling Facility, Automatic Riveting Facility, CNC, Embossing Facility, High Speed Punch, Lock Case Drilling Facility, Lock Cylinder Drilling Facility
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 2 people
-
Test Reports for Raw Materials
- Others
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2010-10-09
- Export Year
- 2021-11-14
-
Main Markets
- South America, Europe, Southeast Asia/ Mideast, East Asia(Japan/ South Korea), Domestic
-
Number of Foreign Trading Staff
- 2
-
Overseas Agent/Branch
- No
FAQ
- Are you a trading company or manufacturer?
- We are a factory.
- How long is your delivery time?
- Our delivery time is about 35-45 days.
- How long is your production time?
- Our production time is about 30 days.
- What is the warranty period?
- We provide a warranty of 600,000 times of opening-closing (minimum 5 years) and 1 year warranty of our products.
- What shipping methods do you offer?
- Samples or small orders will be sent by air; orders more than 1 ton or 1 cbm are better arranged by sea.
- Do you provide free samples?
- New customers who have confirmed orders can get free samples without paying costs including shipping. Those testing quality before confirming need to bear transportation costs. Regular customers interested in new products can get free samples at the first time without paying costs including shipping cost.
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