Powder Zinc-Diffused Bolts for Couplers

A New Benchmark for Construction Fastening Safety

Inthefieldofconstruction,boltsforcouplersarecorecomponentsforbuildingstablescafoldingandensuringconstructionsafety.Powder zinc-difusedbolts,withadvancedtechnologyandsuperiorperformance,provide reliable solutions forconstructionand industrial fasteningneeds,redefining industrystandards.

AdvancedZincDiffusion Technology:Layinga Solid ProtectiveFoundation

Powder zinc diffusion adopts diffusion metallurgical bonding technology, enabling zinc atoms to penetrate deeply into the bolt matrix. Unlike electro-galvanizing (mechanical bonding with limited protection) and hot-dip galvanizing (poor uniformity),it achieves a precisely controlled 5 5 \mu { m } diffusion layer thickness,which evenly covers the bolt threads and surface, forming a dense protective layer and establishinga long-termanti-corrosion barrier from the source.

Excellent Performance:Safeguarding Safetyand Efficiency

Superb Corrosion Resistance for Complex Environments

Powderzinc-difused bolts haveacorrosionresistancelifeofover 20years,farexceeding traditional galvanizing processes. Zinc-difused partscanresistrusting forupto5O0 hoursinsaltspraytests,withcorrosionresistance2times higherthan thatof hot-dipgalvanized parts.Theycanresisterosion fromhigh-saltsea breezesincoastal construction,withstand chemicalpolutioninchemicalindustrialareas,andendurelong-termseawaterimmersioninmarineengineeing,ensuringthe stability and safety of key components such as offshore platforms and cross-sea bridge piers.

Hot-Dip Galvanizing

Zinc Diffusion

Comparison of Salt Spray Tests Between Hot-Dip Galvanizing and Zinc Diffusion Under the Same 500-Hour Conditions

High Hardnessand Strong Adhesion for Stable Connections

No Hydrogen Embrittlement Risk: Safe and Secure

HeatResistanceandDimensionalStability

The bolts have a strength grade of 8.8, a hardness of Hv200-400,and the zinc diffusion layer has the highest industryadhesion strength of Grade1.They canmaintain thread integrityduring frequentassembly and disassembly,and tightly engage with couplerswhen bearing loadsand vibrations, ensuring the stability of scaffolding.

Free from hydrogen embrittlement throughout the process, they meet high-strength requirements, eliminating the risk of fracture in heavy-load scenarios such as high-rise buildings and protecting the safety of personnel and equipment.

Theyhaveexcellentheat resistance,maintainingstable performancenearwelding areas;withminimaldimensional change, they fit preciselywith couplers,ensuring construction accuracyand efficiency.

Full-Scenario Adaptation: Driving Industry Upgrades

Widely used in construction scaffolding, bridges,rail transit,aswell aschemical reactors,marine engineeringplatforms,ship structuresand other scenarios, they cover multi-field needswith safe,stable and durable performance, helping the construction, chemical and marine engineering industries move towards high-quality standards.

Choose powder zinc-diffused bolts for couplers,and let every connection become the cornerstone of quality and safety.

Headquarter

Wenma Forming and Shoring Co., Ltd
E2-16, Binhai International Business Park
199 Haiyuan Road, Binhai NewArea,Tianjin
300451,P.R.of China
info@iwenma.cn www.iwenma.cn
+86-13820121101

Wenma Scaffolding Solutions Co., Ltd

E2-16, Binhai International Business Park
199 Haiyuan Road, Binhai New Area,Tianjin
300451,P.R.of China
info@iwenma.com www.iwenma.com
+86-13820121101

V02-082025

Hong Kong, China

Wenma Forming&Scaffolding(H.K.) Limited

Unit11,16/F,MetropoleSquare,No.2OnYiuStreet, Shatin,N.T.,Hong Kong
+852-90897537 +852-23682855
info@iwenma.com hk@iwenma.com
www.iwenma.com

Malaysia

Wenma Scaffolding SolutionsAnd Services (M) SDN. BHD.

A-23-12Menara The Met, BlockALevel23,Menara The Met,No 20JalanDutamas
2, 50480 Kuala Lumpur
info@iwenma.com www.iwenma.com
+86-13711029889

UnitedArabEmirates

WENMA SCAFFOLDING SOLUTIONS-L.L.C-S.P.C Saeed Bin Ahmed Al Otaiba, 403St, AL DANAH, Abu Dhabi, Abu Dhabi +971- 551687567

Qatar

Wenma ScaffoldingSolutionsand ServicesW.L.L.

3rdfloorRoom No:307,BuildingNo.8,StreetNo.820,ZoneNo.18,POBox
47570,Doha，Qatar
+974-40207526 +974-44315667
info@iwenma.com www.iwenma.com

SaudiArabia

WenmaScaffoldingCo.,Ltd.

Building 4294,Al khalij Rd,7943 Az Zhuhur Dist., 32423 Ofice 12 Dammam city,
Saudi Arabia
info@iwenma.com www.iwenma.com