Industry Resources

Engineering Bulletins

#175 Are PFAS Bans an Opportunity for Metal Hose?
#174 Why Tolerances Can’t Be Zero
#173 Fitting Attachment Welds for Metal Hose Assemblies
#172 Preparing Hose Assemblies with NPT Ends for Leak Testing
#171 When to Request Radiographic Testing for Your Metal Hoses?
#170 What Does ASME B31.3 and B31.1 Compliance Mean for Metal Hoses?
#169 What’s the Difference Between Static and Dynamic Bend Radius?
#168 How to Handle Interlocked Hoses
#167 Is a Pressure Tight Interlocked Hose Really Possible?
#166 Using Traveling Loops to Accommodate Axial Movement in Piping System
#165 Accommodating Out of Plane Movement in a Piping System
#164 Alloy Selection in Ammonia Service
#163 How Much Weight Can a Hose Hung Vertically Support?
#162 Alloy Selection for Sulfur and Sulfuric Acid Applications
#161 How Long Will a Metal Hose Last in Service?
#160 How to Install an Expansion Joint
#159 Differences Between the 300 Series Stainless Steels
#158 How to Avoid the Most Common Mistake When Welding a Cap Pass
#157 Delay Work Hardening of Metal Bellows in High Vibration Applications
#156 Failure Analysis: Braided Hose in High Vibration Applications
#155 Comparing Metal and Rubber Lance Hoses
#154 What’s the difference between Penflex P3 and P4 Series Hoses?
#153 An Overview of Common Expansion Joint Accessories
#152 When to Use an Expansion Joint Instead of a Hose
#151 How Liquid Penetrant Inspection (PT) Works
#150 What Makes Metal Hose Corrosion Resistant?
#149 An Introduction to Microbially Influenced Corrosion (MIC)
#148 No Simple Solutions When It Comes to Oxygen Service Cleaning
#147 Weld Purging with Argon Gas: An Industry Standard
#146 When to Fret about Fretting Corrosion
#145 Sour Gas Transfer: Considerations Around Metal Hose Alloy Selection
#144 The Case for Positive Material Identification
#143 Test Results: Metal Hose Cycle Life
#142 Hardworking Hoses for Well-Executed Turnarounds
#141 Hose Assembly Handling for Terminal Operators
#140 Why Flexibility Doesn’t Necessarily Mean Longer Service Life
#139 Hose Flexibility: A Complex Calculation
#138 Causes and Prevention of Hydrogen Embrittlement
#137 H Grade May Be Specified, but You Might Not Need It
#136 Considerations on Managing High Flow Velocity with Interlocked Liners
#135 How to Avoid Stress Corrosion Cracking
#134 Common Causes of Hose Assembly Failure
#133 Leak Testing for Cryogenic Hoses
#132 Loose Braid Consideration: Vacuum Pump Tightening Method
#131 Making Hose from Tube: Penflex Uses Several Mechanical Forming Methods to Form Hose
#130 Considerations for Duplex or Steam Jacketed Hoses
#129 California Proposition 65 Statement
#128 Using Corrugated Hose for Vacuum Applications
#127 P4 Products Are in Accordance with ISO 10380 Standard for Sizes 1/4″ to 2″
#126 How We Calculate Maximum Allowable Working Pressure (MAWP)
#125 Non-Destructive Testing Program and NDT Lab
#124 Common Alloys: Cross-Reference of American with German & European Standards
#123 Loose Braid Consideration: Methods of Tightening Braid on Hose
#122 Hose Assembly Cut Length Calculation
#121 BS EN 10204:2004 Metallic Products: Types of Inspection Documents
#120 How Many BTUs Can be Handled by Corrugated Hose?
#119 Corrosion of Common Alloys in Dry Chlorine (Cl2)
#118 P3 Products Are in Accordance with ISO 10380 Standard
#117 Braid: Consideration for Use on a Different Hose OD
#116 Basic Steps in Hose Assembly Failure Analysis
#115 Environmental Corrosion of Stainless Steel
#114 Vibration and Minimum Hose Length Requirements
#113 Austenitic Steels: Mechanical Properties at Cryogenic Temperatures
#112 Operating Conditions and Reduction Factors Consideration
#111 Calculation of Pressure Loss in Corrugated Hoses
#110 Corrugated Metal Hose in Externally Pressurized System Under Vacuum
#109 Calculating Pitting Resistance Equivalent Number (PREN)
#108 Corrugated Metal Hose and Flow Velocity Consideration
#107 Assembly Installation Handling Precautions
#106 Service Temperatures of Austenitic Steels & Other Materials
#105 Chloride/Chlorine Levels and Stainless Steel Alloy Selection
#104 The Advantages of Using Monel Hose vs. Teflon for Chlorine Transfer
#103 The Advantages of Using 321 SS vs. 304/304L SS
#102 Leak Detection Methods
#101 Changes and Additions to Penflex Product Catalog

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