Technical Info
& Standards
Your guide for engineering calculations, material standards, and technical references.
Section 01
Product Standards
A. Qualified Steel Standards
Our steel bars (hot rolled, cold drawn, free-cutting etc.) are classified according to the following norms:
EN
European Norm
Primary standard valid in EU countries.
DIN
German Norm
German standard widely referenced worldwide.
AISI/SAE
American Norm
Standards used in automotive and machinery.
ASTM
American Norm
Standard for material testing and specifications.
B. Flange & Fittings Standards
Our flange and fitting products, essential for industrial piping in Oil, Gas, Petrochemical, and Energy sectors.
ASME B16.5
Pipe Flanges and Flanged Fittings (NPS 1/2" - 24")
ASME B16.47
Large Diameter Steel Flanges (NPS 26" - 60")
ASME B16.9
Factory-Made Wrought Buttwelding Fittings
EN 1092-1
European standard based on PN rating
API 6A
Wellhead Equipment in Oil & Gas
Section 02
Technical Calculation Tools
Practical weight calculation formulas to quickly determine your material needs. (Steel density ≈ 7.85 g/cm³)
1
Round Bar
Weight (kg/m)
ز × 0.00617
2
Square Bar
Weight (kg/m)
K² × 0.00785
3
Hexagonal Bar
Weight (kg/m)
A² × 0.00680
4
Flat Bar
Weight (kg/m)
T × G × 0.00785
Section 03
Technical Info Library
A. How to Read Steel Grade Designations
Example 1: European Norm (EN)
42CrMo4
42≈ %0.42 Carbon content
CrMain alloy (Chromium)
MoSecondary alloy (Molybdenum)
Example 2: German Norm (Werkstoff-Nr.)
1.7225
1.7225 = 42CrMo4 (EN) = 4140 (AISI)
B. Flange Pressure Ratings
ASME/ANSI
Class 150Class 300Class 600Class 900Class 1500Class 2500
* 'Class' number is not direct PSI, it's a pressure-temp classification
European PN
PN 10PN 16PN 25PN 40PN 63PN 100
* PN: Max operating pressure at 20°C (Bar)