Hardened Bicycle Locks and U Locks

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China Main Port
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TT or LC
Min Order Qty:
300 Pieces pc
Supply Capability:
32000 Pieces per Month pc/month

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Product Description:

*hardened bicycle lock with good quality and low price.


*MOQ: 300pcs


*Product: U-Lock for motorcycles


*Model No.:320


*Lock cylinder: YUEMA racing lock core


*Lock body: Φ32mm alloy steel, chromed


*Shackle: Φ20mm steel, heat-treated ,white zinc plated


*Specifications: 223.5*245*32mm


*Packages: blister paper card,10 pcs/ctn




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Q:If there are now on the market A, B, C-level lock, electronic lock, screw lock these different locks, you will choose what kind of family to install it?
The family is only used C-class more reliable other are not appropriate, different places will use a different lock
Q:Beyond all stainless steel lock can be opened from the lock cylinder violence?
Lock core with a number of anti-theft technology, a variety of special-shaped anti-pull ball, put an end to technology to open, with a unique ball and leaf structure design, with a high anti-technical open security performance.
Q:How to maintain locks
The use of some zinc alloy and copper locks, installed on the door for a long time will find a "spot", this phenomenon does not belong to rust, but belongs to oxidation, if this happens, as long as the surface Wax spray can remove the spots.
Q:What are the types of hardware accessories for locks?
Door locks according to the development of modern locks, the form points: password lock, sensor lock (IC card lock), electromagnetic locks, biological locks and so on.
Q:What is a smart lock? how to use?
The use of non-mechanical keys as a user identification ID mature technology, such as: fingerprint lock, iris recognition access control (biometric class, high security, there is no loss of damage; but inconvenient configuration, high cost). Magnetic card, RF card (non-contact category, high security, plastic material, configuration to carry more convenient, low price). TM card (contact category, high security, stainless steel, easy to carry configuration, the lower price)
Q:Anti-theft door locks can be changed inside and outside
Not all of the anti-theft lock can be inside and outside the facelift
Q:What is the good tongue lock, single lock tongue, double lock tongue, three tongue which is good?
Change the lock core and change the tongue is two different things. Generally like you said this situation only need to replace the lock cylinder can be a door is the most critical lock, a lock is the key to the lock cylinder, the lock is more than a lock cylinder control door open and close, as long as the lock The core is opened and the lock is opened.
Q:Yue Ma lock a few product level? How about the empty lock cylinder
Yue Ma lock, the traditional ball lock up and down the bullet holes on the hole interlocking lock principle, instead of the shrapnel from the rotation angle to transform, by a monolithic key to lock the way to change the traditional ball were locked method , To avoid the dislocation and liquid clogging phenomenon. If you want to open the lock, you must put all the keypad of the shrapnel at once in the lock groove, in a zigzag keyway, the key can move inward, in the field of technical open to deal with great Breakthrough, the bilateral set of mechanical keys, keyway lock is the mechanical transmission to prevent the only device to twist. Cylinders also add keyless twist settings, non-lock key into the keyhole can be arbitrarily twisted 360 degrees, but the lock is still not open. In today's world of anti-theft lock, the lock structure from the anti-technology to open, anti-destructive tools, process production process, the cost level and consider the interests of investors to evaluate multiple angles, Yue Ma lock is a leading trend, Replace the traditional structure of the new ball lock products.
Q:The key was stuck in the lock
Do not pull hard. Try to inject a little oil into the keyhole, no matter what the oil can, and then gently turn the key, and then pull out. The reason is: you use the key is not often used, the card is not easy to slide the card beans, the spring can not work, caught the key caused.
Q:What is the way to open the horse lock?
Solid tooth method; first with a single hook by the lock spring. To feel the gap of the film position. Should be able to feel the approximate location. And then do not be on the other child, and then inserted into the lock body with a thin feeler. To insert the top of the lock. Note that the lock is not separated from the two sides, but not the state of the key. At this point the next lock spring. The lock spring does not bounce back as well. Note that the curvature of the feeler is consistent with the key. Bend big or small with open record. And the speed has a big relationship. Best to follow their own experiments to master. And then use a single hook point under the lock spring. To the same as beforehand. Followed by points. Do not say anything to gently shaking left and right. Single hook also a little bit in turn. Try it several times. You will be able to open
We are specializing in making a series of mechanical locks for vehicles, safes and doors. Most of our products have obtained national patent certificates. Our products also have been recommended by the Ministry of Public Security as the security and protection products for many years. We welcome friends all over the world to visit us!

1. Manufacturer Overview

Location Guangdong,China (Mainland)
Year Established 2007
Annual Output Value
Main Markets North America 2%
South America 1%
Eastern Europe 1%
Southeast Asia 3%
Africa 5%
Mid East 5%
Eastern Asia 3%
Domestic Market 80%
Company Certifications ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage 1% - 10%
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size: 10,000-30,000 square meters
No. of Production Lines
Contract Manufacturing OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range