Could you send me sample before I place an order?

Yes, offer 3 pcs free samples for your evaluation, you provide the Courier account for freight collect.

Are your company factory or trading company?

We are a SGS Audit factory, over 10 years manufacturing experience in architectural hardware.

How can I get the latest prices?

Send requirements to us by mail or calling , we will reply you in 24 hours.

Zinc Alloy Round Tubular Door Knob Handle Lock Without Locking for School

Name: Zinc Alloy Round Tubular Door Knob Handle Lock Without Locking for School
Brand: D&D Hardware Industrial Co., Ltd.
SKU: 1955382405

Guangdong, ChinaD&D Hardware Industrial Co., Ltd.

US$6.20

500-4,999 Pieces

US$4.50

5,000+ Pieces

Sample price:US$10.00/set.Request sample

Product profile

Customization

Available

Material

Zinc Alloy

Type

Key Lock

Model NO.

DDLK035

Style

Modern

Shape

Mortise Door Lock

Anti-theft Standard

Part

Lock

Backset

2-3/4"Standard.2-3/8"Optional

Door Thickness Fits

Customized

Lock Cylinder Length

70mm

Usage

Household Door Locks, Bedroom, Channel Lock

Finish

SSS, Pss, PVD, Ab, AC,MB

Door Prep 1

Cross Bore 2-1/8", Edge Bore 1"

Door Prep 2

Latch Face 1-18"X2-1/4"

Cylinder

6-Pin Removable Core.Schlage "C" Keyway

Face Plates

1-1/8"X2-1/4"Square Corner Standard

Door Thickness

1-3/8"-2"Standard

Strikes

ASA Strike Standard.2-1/4"Full Lip Square Corner

Certificate

ANSI&UL

UL10c Grade 1 & Grade 2

Fire Rated

3 Hours

Accessories 1

Brass Insert, Rosette with Base

Accessories 2

Escutcheon with Base, Spindle

Accessories 3

Wooden Screws, Bamboo Screws, Allen Key

Suitable for

Wooden Door, Metal Door, Fire Rated Door etc.

Transport Package

White Box or Color Box, Carton Packing

Specification

For Export, CE standard

Trademark

D&D or mark client's logo

Origin

Jiangmen Guangdong, China

HS Code

83024100

Production Capacity

200, 000 / Month

Key features

Fire Rated Certification: UL10c Grade 1 & Grade 2 certified, providing 3 hours of fire resistance.

Customizable Door Thickness: Door thickness fits are fully customized to meet specific installation needs.

Premium Material Options: Constructed from Zinc Alloy or Stainless Steel (SUS304/SUS316) for durability.

5-Year Mechanical Guarantee: Comprehensive 5-year mechanical guarantee ensures long-term product reliability.

Professional OEM/ODM Service: Experienced manufacturer offering professional OEM and ODM customization services.

Versatile Finish Choices: Available in Satin Stainless, PVD, Matt Black, Antique Brass, and Antique Copper.

Wide Application Compatibility: Suitable for wooden, metal, and fire-rated doors with standard or custom backsets.

International Standard Compliance: Products follow EN/CE, UL, and ANSI standards for global quality assurance.

Company profile

D&D Hardware Industrial Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2008-01-12 CertifiedNearest Port: Jiangmen Port, Guangzhou Port, Shenzhen PortAverage Response Time: ≤5.26h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryD&D Hardware Industrial Co., Ltd. is a China-based limited company and factory established in 2018, specializing in door and construction hardware. It operates a 1,368 m² manufacturing plant with six production lines, 45 employees, and 11–20 quality-control staff. The supplier reports ISO 9001:2015 certification and has exported since 2008, with 71%–90% of sales attributed to exports. Its stated capabilities include customization, quality assurance, technical support, and long-term customer relationships, but evidence for after-sales service, specific customer cases, and innovation depth is limited. Financial credibility cannot be conclusively assessed from the available non-financial evidence.

Supplier typeThe supplier is identified as a factory and limited company based in Jiangmen, Guangdong, China. Its stated business scope and product portfolio focus on door hardware, locks, hinges, closers, exit devices, and related construction hardware, indicating a manufacturing-oriented supplier rather than only a trading entity.

CertificationsThe supplier holds an ISO 9001:2015 management-system certificate. This is explicit evidence of a formal quality-management certification, although no additional certifications are provided.

Production capacityThe supplier reports a 1,368 m² manufacturing plant, six production lines, and 11–20 quality-control staff, alongside a broad door-hardware product range. These details provide explicit evidence of an established production setup, although capacity utilization and delivery performance are not stated.

Customization capabilityThe company explicitly claims customization ability and says its qualified team can identify solutions suited to customer needs and technical specifications. This supports a positive assessment, although the slices do not describe customization scope, tooling, minimum order requirements, or completed examples.

Product Q&A

Q:What certificates do you have?

We have CE and UL certificate, all our product design follow up the international standard, such as the EN/CE, UL, ANSI standard.

Q:Do you accept OEM or ODM?

Yes, We are professional in OEM and ODM. now , Cooperating with famous brands for OEM & ODM.

Q:Do you have quality system?

Yes, we have. We have set up our quality system and well controlled our production quality as per the instructions and requirements in it and well-control each procedure throughout the mass-production.

Q:What's the guarantee of your products?

5 Year Mechanical Guarantee.

Q:What's the stainless steel Grade you are working now?

We are working mostly in SUS304 and SUS316, some items can be SUS201 as well.