Home > U-Bolts > 316 Stainless Steel U-Bolt, 3" Pipe

316 Stainless Steel U-Bolt for 3" Pipe - 2.25" ID

Expert Overview

This 316 stainless steel U-bolt is engineered for robust pipe support, specifically designed for 3" nominal pipe sizes. Its superior corrosion resistance ensures longevity in harsh industrial and marine applications.

StandardASTM A106
Material316 Stainless Steel
FinishGalvanized
GradeN/A
Inside Width ( A)2.25"
Inside Length ( B)6.35"
Thread Size1/2"-13

Detailed Engineering Specifications

Engineered for reliability and performance, this U-bolt is constructed from premium 316 stainless steel, offering exceptional resistance to pitting and crevice corrosion, even in aggressive chemical and saltwater environments. With an inside width (A) of 2.25 inches and an inside length (B) of 6.35 inches, it is precisely dimensioned to secure 3" nominal pipe. The robust 1/2"-13 UNC thread size ensures a strong, dependable fastening capability. This makes it an ideal choice for structural support of piping systems in chemical processing, offshore platforms, food and beverage industries, and wastewater treatment facilities where material integrity is paramount.

🧊 Download 3D CAD Model (.STEP)

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."
Market Rank
🏆 Global Innovation Leader
Industry Approvals
🚀 Aviation & Medical Approved
Warranty & Support
🛡️ Premium Performance Guarantee
Green Manufacturing
🌱 100% Renewable Energy HQ
Certified:ISO 9001, ISO 14001
LoctiteEst. 1953
Germany🇩🇪
"Industrial adhesives and sealants."
Market Rank
🏆 #1 Global Adhesives
Industry Approvals
🚀 Formula 1 & Aerospace OEM
Warranty & Support
🛡️ 24/7 Application Support
Green Manufacturing
🌱 Climate Positive 2030
Certified:ISO 9001, IATF 16949
McMaster-CarrEst. 1901
USA🇺🇸
"Complete industrial supply."
Market Rank
🏆 #1 Industrial Supply Standard
Industry Approvals
🚀 US Military Approved
Warranty & Support
🛡️ Lifetime Return Policy
Green Manufacturing
🌱 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 3" pipe, ensuring it rests securely on a compatible mounting surface or bracket. 2. Thread the provided nuts onto the U-bolt legs, hand-tightening initially. 3. Using appropriate wrenches, tighten the nuts evenly to the recommended torque specification for the thread size (1/2"-13 UNC), ensuring firm but not over-tightened clamping pressure.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)16.0 - 18.0%
Nickel (Ni)10.0 - 14.0%
Molybdenum (Mo)2.0 - 3.0%

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1500°F (815°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 / ExposedExcellent
Marine / SaltwaterExcellent
Chemical / AcidicGood

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Incorrectly sizing the U-bolt for the actual outer diameter of the pipe.Always verify the nominal pipe size and consult pipe dimension charts to ensure the U-bolt's inside width (A) is appropriate for the pipe's outer diameter.
Over-tightening the U-bolt, which can deform the pipe or damage the mounting surface.Tighten nuts evenly and to the manufacturer's recommended torque specification, using a torque wrench if possible.
Using a lower grade of stainless steel in corrosive environments.For applications exposed to saltwater, chemicals, or high humidity, always select 316 stainless steel for its superior corrosion resistance.

Common Applications

  • Marine and offshore pipe support
  • Chemical processing plant piping
  • Food and beverage industry installations
  • Wastewater treatment facilities
  • General industrial pipe clamping

⚠️ Engineering Warnings

  • Ensure the mounting surface or bracket is adequate to support the load of the pipe and its contents.
  • Regularly inspect U-bolts for signs of wear, corrosion, or loosening, especially in harsh environments, and retighten or replace as needed.

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 316 Stainless Steel U-Bolt, 3" Pipe made from?

A: This 316 Stainless Steel U-Bolt, 3" Pipe is manufactured from 316 Stainless Steel.

Q: What are the main applications?

A: Marine and offshore pipe support, Chemical processing plant piping, Food and beverage industry installations, Wastewater treatment facilities, General industrial pipe clamping.

Technical Schematic

U-BOLT DIMENSIONAL DIAGRAMASME B18.31.5PIPE1"NUTNUTA = 2.25"B6.35"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.