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ASTM A325m Heavy Hex Bolt 8.8 Grade Hot DIP Galvanized M12 M16 M18 Weather Resistant Carbon Steel Hex Bolts for Heavy Duty Structural Connections

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Product Description

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Basic Information

Model NO.
ASTM A325
Application
Heavy Industry/General Industry
Thread
Unc/Unf
Measurement System
Metric
Quality Control
100% Inspection
Sample
Sample Available
Deliver Port
China
Delivery Time
30-35 days
Service
OEM ODM
Transport Package
Carton+Pallet
Specification
M12-M36
Trademark
GT
Origin
China
HS Code
7318150090
Production Capacity
500,000 PCS/Month
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Packaging & Delivery

Package Size
35.00cm * 30.00cm * 30.00cm
Package Gross Weight
25.000kg
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Product Description

ASTM A325 Heavy Hex Bolt
Heavy Structural Bolt 1
Heavy Structural Bolt 2
Heavy Structural Bolt 3
Bolt Detail 1
Bolt Detail 2
Product NameHeavy Structural Hex Bolt
DiameterM12-M36. According to customer request.
MaterialASTM A325M
ColorSilvery, Black/Plain/Blue White/Self Color/Yellow are also available.
StandardDIN GB ISO JIS BA ASME ASTM
FinishedHDG / Hot Dip Galvanized. Zinc plated( blue/white/yellow)/Plain/PTFE/Dacromet/Nickle Plated/Chrome/Cadmium Plated are also available.
CertificateISO9001-2008, SGS, CTI, RoHS
ThreadMetric. Coarse(UNC), Fine(UNF)
Test EquipmentsCaliper, Go & No-go gauge, Tensile test machine, Hardness tester, Salt spraying tester, H.D.G thickness tester, 3D detector, Projector, Magnetic flaw detector
PackingBulk in cartons (25kg Max.) + wood Pallet or according to customer special demand
Advantages• One-stop shopping; professional and experienced engineers and strict QC and QA system
• Response within 24 hours
• Large stock for standard size
• Timely delivery
ApplicationStructural Steel; Metal Building; Oil & Gas; Tower & Pole; Wind Energy; Mechanical Machine; Automobile; Home Decorating; etc.
NoticePlease let us know the standard, Size, quantity, Material or Grade and surface. Please supply drawing, photos or samples to us if it is a special or Non-standard product.
Product Technical Drawing
Galvanized Bolt Storage
Bolt Specifications

Frequently Asked Questions

What is the specific application for ASTM A325 heavy hex bolts?
These bolts are primarily designed for use in structural steel connections in heavy industrial projects, including buildings, bridges, and infrastructure where high strength and weather resistance are required.
What are the advantages of the Hot Dip Galvanized (HDG) finish?
HDG provides superior corrosion resistance by creating a thick, durable zinc coating that protects the steel from environmental elements, making it ideal for outdoor and weather-exposed structures.
Do you offer custom sizes or non-standard hex bolts?
Yes, we provide OEM and ODM services. If you require special sizes beyond the standard M12-M36 range, please provide your drawings or samples for custom production.
What quality control measures are in place?
We perform 100% inspection using advanced equipment including tensile test machines, hardness testers, salt spray testers, and 3D detectors to ensure every batch meets international standards.
What is your typical production capacity and lead time?
Our monthly production capacity is approximately 500,000 pieces. The standard delivery time is 30-35 days, depending on the order volume and specific requirements.
Are samples available for testing before bulk orders?
Yes, samples are available for quality evaluation and testing to ensure the product meets your specific project requirements.

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