Mechanical datas and performance:
Tensile strength HB180> 330N/mm,
Working pressure is 1.6Mpa, Elongation>8%,
Test pressure is 2.4Mpa,
HardnessThese fittings are widely connected to the pipes with water, oil, air, coal gas etc.
Concentric Reducing Socket, Beaded/Plain/banded, With Ribs
Model Number: 1/4"-6"
Color: White or Black
Material: Malleable Iron
Head Code: Circular
Shape: Reducing with/without ribs
Connection: Female
Type: Coupling
Technics: Casting, malleable
Surface finishing: Hot dip galvanizing / black

They can mainly be divided into four standards:
American standard:
Materials: ANSI/ASME A197-79
Dimensions: ANSI/ASME B16.3-85
Threads: ANSI/ASME B1.20.1

Din Standard:
Materials: DIN1692
Dimensions: EN 10242 DIN2950
Threads: ISO 7/1 DIN2999

British Standard:
Materials: ISO 5922 BS 143 and BS1256
Dimensions: ISO 49, Threads: ISO 7/1