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4" Sch 40 316 Stainless Steel Seamless Pipe

Expert Overview

This 4.0" Schedule 40 seamless pipe, crafted from premium 316 stainless steel, offers superior corrosion resistance and structural integrity for high-pressure, aggressive media applications.

StandardASTM A106
Material316 Stainless Steel
FinishPassivated
GradeN/A
Pipe Size4.0"
Outside Diameter1.550"
Wall Thickness0.424"

Detailed Engineering Specifications

Designed for demanding industrial environments, this 4.0" nominal pipe size (NPS) seamless pipe boasts a precise 1.550" outside diameter and a robust 0.424" wall thickness, conforming to Schedule 40 specifications. The 316 stainless steel alloy provides exceptional resistance to pitting, crevice corrosion, and general corrosion, making it ideal for handling corrosive chemicals, high-temperature fluids, and marine environments. Its seamless construction ensures uniform wall thickness and enhanced leak resistance under extreme pressure and vibration.

🧊 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 all mating surfaces are clean, free of debris, and properly beveled if required for welding. 2. Align pipe sections accurately, maintaining concentricity for welding or fitting. 3. Perform welding or connect fittings according to industry best practices and applicable codes (e.g., ASME B31.3), ensuring complete joint penetration and proper heat treatment if necessary.

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
Using incorrect welding consumables for 316 stainless steel, leading to reduced corrosion resistance.Utilize welding filler metals specifically designed for 316 stainless steel, such as ER316 or E316L, to maintain the alloy's inherent corrosion properties.
Insufficient pre-cleaning of pipe ends, introducing contaminants that compromise weld integrity and corrosion resistance.Thoroughly degrease and remove any oxides or scale from the pipe ends using appropriate stainless steel brushes or abrasive methods prior to welding.

Common Applications

  • Chemical processing and petrochemical industries
  • Offshore oil and gas production
  • Food and beverage processing (sanitary applications)

⚠️ Engineering Warnings

  • Always consult relevant piping codes and standards (e.g., ASME B31.3) for specific application requirements and allowable working pressures.
  • Ensure proper material handling to prevent galling or scratching of the stainless steel surface, which can compromise corrosion resistance.

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 40 made from?

A: This Seamless Pipe, Schedule 40 is manufactured from 316 Stainless Steel.

Q: What are the main applications?

A: Chemical processing and petrochemical industries, Offshore oil and gas production, Food and beverage processing (sanitary applications).

Technical Schematic

PIPE CROSS-SECTIONASTM A106 / ASME B36.10FLOWOD = 1.550"ID = 2.067"WALL0.424"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.