Core Technology & Quality Compliance | Xin Qiao Steel Structure

Technical Pillars

Core Engineering Capabilities

Six uncompromising technical pillars that ensure structural integrity, precise site fit-up, and long-term durability in extreme climate conditions.

01 / 3D BIM

Every project is modeled using Tekla Structures 3D BIM software. NC files exported directly to CNC cutting lines for zero-error assembly.

• 100% Clash Detection

02 / CNC CUTTING

Multi-head CNC flame & plasma cutters achieve ±0.5mm cutting tolerances for steel plates up to 100mm thickness.

• Precision: ±0.5mm

03 / SAW WELDING

Continuous submerged arc welding lines deliver deep penetration, backed by certified Level-II ultrasonic testing.

• AWS D1.1 & EN 1090-2

04 / SURFACE COATING

8-wheel pass-through shot blasting systems achieve SA 2.5 cleanliness, matched with controlled epoxy painting bays.

• SA 2.5 Surface Tested

05 / TRIAL ASSEMBLY

Complex spatial trusses, canopies, and multi-story frame joints undergo 1:1 yard pre-assembly to eliminate site delays.

• Zero On-Site Delays

06 / QA/QC

All raw steel sourced with MTC EN 10204 3.1. Full-penetration welds undergo Ultrasonic Testing (UT) by Level-II inspectors.

• 100% Ultrasonic Testing

Global Benchmark

Standard Region	Design & Welding Code	Steel Grade Equivalent	Galvanizing / Coating Code
Chinese Code (GB)	GB 50205-2020 / GB 50017	Q235B / Q355B / Q355D	GB/T 13912
European Standard (EN)	EN 1090-2 (EXC2 & EXC3) / EN 1993	S235JR / S355JR / S355J2	EN ISO 1461 / ISO 12944
American Standard (ASTM/AISC)	AISC 360 / AWS D1.1 Welding Code	ASTM A36 / A572 Grade 50	ASTM A123 / SSPC Surface Prep
Australian Standard (AS/NZS)	AS 4100 / AS/NZS 1554.1 Structural Welding	Grade 250 / Grade 350 / Grade 350L15	AS/NZS 4680