Product Overview

Engineering Advantages

1. EN 1090 & ISO 3834-2 Certified Manufacturing Process

Steel structure certification gaps are invisible until a technical audit or insurance claim surfaces them. EN 1090 EXC2 applies to standard structural execution and covers the requirements of most single-story standard industrial workshop projects. EXC3 applies when consequence class CC2 elevates the project risk profile — common in any industrial manufacturing facility supporting high-speed overhead cranes, seismic-zone foundations, or fatigue-sensitive secondary structure. Jinnuoda holds CE marking under both EN 1090 EXC2 and EXC3, removing the third-party recertification step that delays export procurement timelines by months. ISO 3834-2 governs every weld in the prefabricated steel building: full WPS, WPQR, and NDT documentation is issued for each production batch, giving EPC procurement and site inspection teams a complete traceability record from raw material certification through to final connection torque logs.

2. Q355B Steel Frame and Full-Bolt Connection System

Q355B structural steel — equivalent to S355JR under EN 10025 and ASTM A572 Grade 50 — delivers a guaranteed yield strength of 345 MPa and tensile range of 470–630 MPa. In a standard industrial workshop supporting 20-ton overhead cranes and vibration-sensitive production equipment, this grade selection matters structurally: Q355B allows shallower tapered column and rafter sections for the same clear span versus Q235B alternatives, cutting structural dead weight by 8–12% without reducing load capacity. Every heavy-duty industrial workshop member at Jinnuoda undergoes Sa2.5 shot blast preparation, then receives a two-coat Epoxy Zinc-Rich primer at 80 μm DFT total plus alkyd or epoxy topcoat — reaching ≥120 μm total DFT and ISO 12944-5 C3 durability rating. The full-bolt connection system uses precision-machined end-plate flanges and grade 10.9 high-strength bolts torqued to proof load, achieving joint rigidity equivalent to full-penetration field welds — with zero heat-affected zones and 100% field inspectability via calibrated torque wrench.

3. Site-Specific 50-Year Recurrence Load Engineering

Generic load assumptions are the most common hidden deficiency in exported prefabricated steel buildings. A standard industrial workshop designed for Central European ground snow levels will not satisfy Canadian or northeastern China winter load requirements — yet many supplier quotations apply a single standard product globally without site-specific engineering review. Jinnuoda's structural team extracts 50-year return period wind pressure and ground snow load values from site-specific meteorological databases, then applies ASCE 7, EN 1991, or GB 50009 calculations per the destination structural code. For coastal or typhoon-risk locations, local pressure coefficients and cladding fixing uplift forces are calculated as separate load cases. The industrial manufacturing facility frame is internally peer-reviewed before shop drawings are released — ensuring the heavy-duty industrial workshop satisfies local authority structural approval on the first submission, without post-submission redesign delays.

Technical Specifications

Key Application Sectors

Jinnuoda's standard industrial workshop and prefabricated steel building systems serve four end-use sectors where structural performance and fast installation timelines are both mandatory:

Frequently Asked Questions (FAQ)