DIN 50136: Flattening (Ring Fold) Test on Metallic Tubes
DIN 50136 is a withdrawn German standard for a flattening (ring fold) test on metallic tubes, used to assess tube integrity and formability. New work references the current tube-test standards instead. To match this to your program, talk with our team.
What DIN 50136 Covers
The flattening test compresses a short length of tube between platens until the walls meet or a defect appears, revealing weld soundness, ductility, and formability of the tube.
Reading the Designation
Cited as DIN 50136 with its year. Confirm whether the controlling document expects a current tube-test standard.
Current Replacement
Because DIN 50136 has been withdrawn, current tube evaluation uses the maintained flattening and ring test standards. Legacy references can be mapped onto these with documented equivalence; for ring tensile evaluation see ISO 8496.
TensileMill CNC products for DIN 50136
Our specimen-preparation systems and testing equipment compatible with DIN 50136.

TensileMill CNC MICRO – Precision Flat Tensile & Impact Micro Machine
MICRO – Precision Flat Tensile & Impact Sample Preparation

TensileTurn CNC – Industrial Upgrade – Round Tensile Sample Preparation Machine
Industrial Upgrade – Round Tensile Sample Preparation

Electro Mechanical Universal Testing System 5 kN / 50 kN with Precision Load Cell
Electro-Mechanical UTM · 5 kN / 50 kN with Precision Load Cell

TensileTurn CNC MINI – Compact Round Tensile Specimen Preparation Machine
MINI – Compact Round Tensile Specimen Preparation
Set up DIN 50136 testing with TensileMill CNC
Tell us your materials, specimen forms, and required test sections, and our team will match the right configuration.