📋 About Steel Delivery Condition annotations
A Annealing
AR As Rolled / Hot Rolled
ACC Accelerated Cooling
CR Controlled Rolling
N Normalized
T Tempering
TM(TMCP) Thermo-Mechanical Controlled Process
SR Stress Relieving
NR Normalized Rolled
QT Quenching And Tempering
N+T Normalized + Tempering

🏛️ AISC - American Society of Steel Construction
📌 AISI - American Iron and Steel Institute
⚙️ ASTM - American Society for Testing and Materials (ASTM)
🔧 AWS - American Welding Society
⚡ ASME - American Society of Mechanical Engineers
🎨 SSPC - Steel Structure Painting Committee
📐 UBC - Unified building code
🇬🇧 BS - British Standard
🇩🇪 DIN - German Standard
🇯🇵 JIS - Japanese Standards

🚢 Classification society & 权威标准机构
C.C.S. China Classification Society
A.B.S American Bureau of Shipping
B.V Bureau Veritas
DNV Det Norske Veritas
GL. Germanischer Lloyd
KR Korean Register of Shipping
LR Lloyd's Register of Shipping
N.K. Nippon Kaiji Kyokai
R.I.N.A Registro Italiano Navale
PRS Polish Register of Shipping
RS Russian Maritime Register of Shipping
GB Mandatory Chinese national standards
GB/T Recommended Chinese National Standard
EN European Normalization
DIN Deutsches Institute fur Normung
BS British Standard Institution
ASTM American Society for Testing and Materials
ASME American Society of Mechanical Engineers
ISO International Organization for Standardization
JIS Japanese Industrial Standards

ReL Lower Yield Strength
ReH Upper Yield Strength
Rm Tensile Strength
HBW Brinell Hardness