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The Caldwell Model DM34 Dura-Mod Modular Spreader Beam System is engineered for heavy-duty lifting applications that require flexibility, portability, and configurable beam spans. Its modular design allows users to assemble beam lengths from 3 to 32 feet using interchangeable spreader sections, end fittings, drop links, and bolt kits.
Designed to handle loads up to 34 metric tons, the DM34 system is ideal for manufacturing facilities, steel fabrication shops, construction projects, shipyards, and industrial maintenance. The knock-down design makes transportation and storage easier while allowing the beam to be configured for a wide range of lifting applications. Capacity is determined by beam span and sling angle using Caldwell's capacity charts.
Key Features

Modular two-point spreader beam system
Configurable beam spans from 3 to 32 feet
Handles loads up to 34 metric tons
Knock-down design for easy transportation
Order individual components or starter set
One bolt kit included with each end fitting and spreader section
Reusable hardware when anti-seize thread coating is applied
Compatible with synthetic, wire rope, and chain slings
Designed for 25-ton top shackles and 17-ton bottom shackles
Capacity determined by beam span and sling angle
Meets ASME B30.20 and BTH-1 Design Category B Class 0 requirements

Applications

Steel fabrication
Manufacturing facilities
Construction projects
Shipyards
Industrial maintenance
Heavy equipment installation
Material handling
Utility contractors
Infrastructure projects
Plant maintenance

Specifications

Product Type: Modular spreader beam system
Model: DM34
Configuration: Two-point modular spreader beam
Maximum Capacity: 34 metric tons
Beam Span: 3 to 32 feet
Modular Components: End fittings, drop links, spreader sections, bolt kits
Top Shackle: 25-ton carbon bolt-type
Bottom Shackle: 17-ton carbon bolt-type
Slings: Sold separately
Compliance: ASME B30.20 and BTH-1 Design Category B Class 0

Component Specifications

Model Number
Description
Weight (lbs.)

DM34-EF
End Fitting
60

DM34-DL
Drop Link
19

DM34-SS-6
6 ft Spreader Section
115

DM34-SS-4
4 ft Spreader Section
85

DM34-SS-2
2 ft Spreader Section
55

DM34-SS-1
1 ft Spreader Section
38

116118
Bolt Kit
2.8

Standard Starter Set Includes

Two end fittings
Two drop links
Three 6-foot spreader sections
One 4-foot spreader section
One 2-foot spreader section
One 1-foot spreader section
Sixteen bolt kits

Documents

Dura-Mod DM34 Product Specification Sheet
Dura-Mod Modular Beam Brochure
Capacity vs. Span Chart
Assembly Instructions
ASME Compliance Information

Frequently Asked Questions
What is the Caldwell Model DM34 used for?
The DM34 is a modular spreader beam system designed for lifting loads up to 34 metric tons in industrial, construction, and material handling applications.
What beam spans are available?
The DM34 can be configured with spans from 3 feet to 32 feet using interchangeable spreader sections.
Are slings and shackles included?
No. Slings and shackles are supplied separately and should be selected based on your lifting plan and application requirements.
Can the hardware be reused?
Yes. Bolts, nuts, and washers may be reused when anti-seize thread coating is applied during assembly.
How is the lifting capacity determined?
Capacity is determined by the beam span and the base-to-sling angle. Refer to the Caldwell Capacity vs. Span chart to select the correct configuration for your application. 
Brand:CaldwellSKU:DM34-DLTags:Free Shipping, Spreader Bars / BeamsOptions:1' Spreader Section, 2' Spreader Section, 4' Spreader Section, 6' Spreader Section, Drop Link, End Fitting