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3" Carbon Steel U-Bolt | 1.39" Width | 7.98" Length

Expert Overview

Engineered for robust pipe support, this carbon steel U-bolt features a 1.39-inch inside width and 7.98-inch inside length, ideal for 3" nominal pipe. Its 1/2"-13 thread provides reliable fastening.

StandardASME B18
MaterialCarbon Steel
FinishAnodized
GradeN/A
Inside Width ( A)1.39"
Inside Length ( B)7.98"
Thread Size1/2"-13

Detailed Engineering Specifications

Manufactured under strict quality controls, this U-bolt is crafted from high-grade carbon steel, ensuring superior strength and corrosion resistance for long-term industrial applications. It is precisely engineered with an inside width (A) of 1.39 inches and an inside length (B) of 7.98 inches to accommodate standard 3-inch nominal pipe sizes. The 1/2"-13 UNC thread provides ample engagement for secure fastening with compatible nuts and washers. This robust construction is designed to withstand significant tensile and shear loads, making it an essential component for pipe infrastructure.

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Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

3MEst. 1902
USA🇺🇸
"Science applied to life."
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LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
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🏆 #1 Global Adhesives
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🚀 Formula 1 & Aerospace OEM
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McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
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🏆 #1 Industrial Supply Standard
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🚀 US Military Approved
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🌱 Sustainable Logistics
Certified:ISO 9001 Compliant

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:Yes

Installation Procedure

1. Position the U-bolt around the pipe, ensuring it rests on a suitable supporting structure. 2. Thread the provided nuts onto the U-bolt legs, hand-tightening initially. 3. Using appropriate wrenches, tighten the nuts evenly in a star pattern to achieve secure and uniform pressure on the pipe and support.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Chemical Composition

Carbon (C)0.28 - 0.55%
Manganese (Mn)0.60 - 0.90%
Phosphorus (P)0.04% max
Sulfur (S)0.05% max

Temperature & Environment Rating

Min Operating Temp
-20°F (-29°C)
Max Continuous Temp
400°F (204°C)
Thermal Expansion
Typical for Material Class

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
StandardVaries by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using the wrong size U-bolt for the pipe diameter.Always verify the nominal pipe size and select a U-bolt with the corresponding inside width and length specifications.
Inadequate tightening of the nuts.Ensure nuts are tightened to the recommended torque specifications for the bolt size and application to prevent pipe movement or slippage.
Using U-bolts in corrosive environments without proper coating or material selection.For highly corrosive applications, consider stainless steel U-bolts or appropriate protective coatings to prevent premature failure.

Common Applications

  • Mechanical piping systems
  • Plumbing and HVAC installations
  • Structural support for conduit and tubing

⚠️ Engineering Warnings

  • Ensure all fasteners (nuts, washers) are properly selected and compatible with the U-bolt material and thread size.
  • Do not exceed the maximum load rating for this U-bolt. Refer to engineering documentation for specific load capacities.

Alternative Products to Consider

Premium U-Bolts equivalentHigher corrosion resistance (316 SS)
Economy U-Bolts optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Carbon Steel U-Bolt, 3" Pipe made from?

A: This Carbon Steel U-Bolt, 3" Pipe is manufactured from Carbon Steel.

Q: What are the main applications?

A: Mechanical piping systems, Plumbing and HVAC installations, Structural support for conduit and tubing.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 1.39"B7.98"C1-1/4"Thread: 1/2"-13 | Both Legs2 Hex Nuts Included

Torque Specifications

⚡ UNIT CONVERTER

Conversion factor: 1 ft-lb ≈ 1.356 Nm

Verified Compatibility

StatusMating ComponentStandardTorque SpecEngineering Notes
No verified compatibility data found for this component.