Home > Pipe, Tubing, Hose & Fittings > Seamless Pipe, Schedule 80

4" Schedule 80 Carbon Steel Seamless Pipe

Expert Overview

This 4" Schedule 80 seamless carbon steel pipe is engineered for demanding industrial environments. Its robust construction and precise dimensions ensure reliable performance in high-pressure and high-temperature fluid transport systems.

StandardASTM A106
MaterialCarbon Steel
FinishBlack Oxide
GradeN/A
Pipe Size4.0"
Outside Diameter3.717"
Wall Thickness0.377"

Detailed Engineering Specifications

A proven choice for industrial professionals, this 4.0" nominal pipe size (NPS) seamless carbon steel pipe boasts an outside diameter of 3.717 inches and a substantial wall thickness of 0.377 inches, conforming to Schedule 80 specifications. Manufactured from high-quality carbon steel, it offers excellent tensile strength and resistance to corrosion in various industrial media. This pipe is ideal for critical applications requiring superior structural integrity and leak-free operation, including petrochemical processing, power generation, and heavy manufacturing.

🧊 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.

VictaulicEst. 1919
USA🇺🇸
"Mechanical pipe joining solutions."
Market Rank
🏆 #1 Grooved Piping System
Industry Approvals
🚀 Global Fire & HVAC Approved
Warranty & Support
🛡️ Lifetime Integrity Guarantee
Green Manufacturing
🌱 100% Recycled Steel
Certified:ISO 9001, FM, UL
SwagelokEst. 1947
USA🇺🇸
"High-purity tube fittings."
Market Rank
🏆 #1 High-Purity Fluid Systems
Industry Approvals
🚀 Semiconductor Approved
Warranty & Support
🛡️ Lifetime Limited Warranty
Green Manufacturing
🌱 Zero Leakage Promise
Certified:ISO 9001, PED
NibcoEst. 1904
USA🇺🇸
"Flow control and pipe fittings."
Market Rank
🏆 Top 5 Flow Control
Industry Approvals
🚀 Commercial Plumbing Approved
Warranty & Support
🛡️ 5-Year Limited Warranty
Green Manufacturing
🌱 Lead-Free Pioneer
Certified:ISO 9001, NSF/ANSI 61

Certifications & Compliance

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

Installation Procedure

1. Ensure pipe ends are clean, free of debris, and properly beveled for welding. 2. Align pipe sections precisely using appropriate alignment tools and tack weld. 3. Complete final weld according to qualified welding procedures and applicable codes, followed by inspection.

Equivalent Standards (Cross-Reference)

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

Mechanical Properties

Burst Pressure4x Working Pressure (Typical)
Working PressureSee Manufacturer Specs
Temperature Range-20°F to 400°F (-29°C to 204°C)

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
Improper beveling leading to weld defects.Utilize calibrated beveling tools and verify bevel angle and root face prior to welding.
Using incorrect welding consumables for the carbon steel grade.Select welding electrodes or filler materials explicitly rated for the specified carbon steel alloy and service conditions.

Common Applications

  • High-pressure hydraulic systems
  • Steam distribution lines
  • Chemical processing equipment

⚠️ Engineering Warnings

  • Always consult relevant ASME/ANSI codes and standards for specific application requirements and welding procedures.
  • Ensure proper personal protective equipment (PPE) is worn during installation and handling.

Alternative Products to Consider

Premium Pipe, Tubing, Hose & Fittings equivalentHigher corrosion resistance (316 SS)
Economy Pipe, Tubing, Hose & Fittings optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Seamless Pipe, Schedule 80 made from?

A: This Seamless Pipe, Schedule 80 is manufactured from Carbon Steel.

Q: What are the main applications?

A: High-pressure hydraulic systems, Steam distribution lines, Chemical processing equipment.

Technical Schematic

PIPE CROSS-SECTIONASTM A106 / ASME B36.10FLOWOD = 3.717"ID = 2.067"WALL0.377"MAX WORKING PRESSURE: 2,500 psiSeamless Construction — Uniform Wall Thickness

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.