Can I get samples before ordering?

Yes, we offer 3 free samples for evaluation. You just need to provide the courier account for freight collect.

Are you a factory or trading company?

We are an SGS audited factory with over 10 years of manufacturing experience in architectural hardware.

What are your payment terms?

Our payment terms include T/T, D/P, Western Union, and L/C.

How can I get the latest prices?

Send your requirements to us by mail or call us, and we will reply within 24 hours.

High Quality Passage Function Door Knob Accessory in Zinc Alloy

Name: High Quality Passage Function Door Knob Accessory in Zinc Alloy
Brand: D&D Hardware Industrial Co., Ltd.
SKU: 1955342625

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

US$6.20

500-4,999 Sets

US$4.50

5,000+ Sets

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 & 2 certified with 3 hours fire rating.

Premium Material Options: Constructed from Zinc Alloy, SUS304, SUS316, or SUS201 stainless steel.

Customizable Finishes: Available in SSS, PVD, Matt Black, Antique Brass, and more.

OEM & ODM Support: Professional OEM/ODM services for famous brands.

5-Year Mechanical Guarantee: Comprehensive 5-year guarantee on mechanical performance.

Versatile Door Compatibility: Suitable for wooden, metal, and fire-rated doors.

Standard & Custom Sizes: Standard backsets with optional 2-3/8 inch configuration.

SGS Audited Factory: Manufactured in an SGS audited facility with 10+ years experience.

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: ≤4.58h 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 certificates. All our product designs follow international standards such as EN/CE, UL, and ANSI standards.

Q:Do you accept OEM or ODM?

Yes, we are professional in OEM and ODM and are currently cooperating with famous brands for these services.

Q:Do you have a quality system?

Yes, we have established a quality system and strictly control production quality according to instructions and requirements throughout mass production.

Q:What is the guarantee for your products?

We provide a 5-year mechanical guarantee for our products.

Q:What stainless steel grades do you use?

We mostly work with SUS304 and SUS316, and some items can be made with SUS201 as well.