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How to Convert Steel Structure Designs from AISC to GB Standards?

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How to Convert Steel Structure Designs from AISC to GB Standards?

2026-06-12

For structural steel fabricators, international projects are far more than just translating drawings into another language or converting inches to millimeters. Success demands a complete system transformation. You need to take the client's design code (AISC, Eurocode, or others), material specification, member marking logic, drawing approval workflow, quality control plan, and delivery protocol,then convert all of them into a production system that your shop floor can actually execute, trace, and ship. Without that bridge, even the best 3D model ends up as confusion on the cutting table.

Light steel building

The Difference Between GB and AISC is Not Just About Different Standard Names

In Chinese steel structure projects, common component annotations on drawings include:

Common Annotations in Chinese Projects

Common Annotations in Chinese Projects

Meaning

GZ

Steel Column

GL

Steel Beam

ZC

Bracket

SC

Horizontal Bracket

LT

Purlin

QL

Wall Beam

DCL

Crane Beam

JD / JB

Node Plate

In AISC system projects, common representations might be:

Common AISC Expressions

Meaning

C1 / C2

Column

B1 / B2

Beam

G1 / G2

Girder

BR1 / BR2

Brace

W

Wide Flange

HSS

Hollow Structural Section

L

Angle

PL

Plate

BP

Base Plate

Gusset Plate

Node board

On the surface, this appears to be a difference between Chinese and English labeling.

However, from an engineering execution perspective, these are two different project management languages.

In GB projects, factories are more accustomed to identifying components by their function; while in AISC projects, component numbers are often directly linked to design models, fabrication details, installation drawings, BOMs, packing lists, on-site installation sequences, and quality traceability.

Prefabricated steel buildingSo, when handling international projects, member marking is never just about giving parts a name. It is the foundation of the entire delivery chain,from design approval to shop floor cutting, from quality tracking to final shipment.

Many fabricators ignore this. They code randomly, lack real engineering. What keeps projects alive is just a patchwork of line items,an illusion of low price and smooth delivery. But the cracks are real. They show up as mismatched beams, rejected drawings, or steel that doesn't fit on site. If you want to win in international steel fabrication, treat your coding system like your welding procedure.

For more information needed or any inquiry,please feel free to contact Yumisteel team.

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