Structural Steel Splice Plates

We produce a complete range of structural steel splice plates for beam-to-beam, column-to-column, and truss chord connections. Our product line covers four connection methods - bolted bearing-type, bolted slip-critical, welded, and hybrid - across all standard steel grades from Q235B to Q390, A36 to A709, and S275 to S460. Whether your project calls for standard bolted flange splices for a warehouse portal frame or fatigue-rated slip-critical splices for a crane girder, we have the production capacity and technical capability to deliver.

We manufacture splice plates for all major structural joint types. Each type we produce is engineered to meet specific load transfer requirements, fatigue performance, and erection conditions per your project design code.

By Member Type

Choosing the right steel grade for your splice plates affects both cost and performance. The splice plate material should match or slightly exceed the parent member's yield strength.Below is our practical guide of fabrication across global projects:

Note:We source all plate steel from Tier-1 Chinese mills - Shougang, Baosteel, and Ansteel. Every batch arrives with EN 10204 3.1/3.2 Material Test Reports. If your project requires specific mill certification (e.g., Ansteel for Australian projects, Baosteel for Middle East), we accommodate that request.

Every splice plate we ship passes through a multi-stage QC checkpoint system - from raw material verification to final coating inspection. Below is what we check, what we certify, and what documentation you receive with each order:

CNC Multi-torch Straight Cutting Machine

Gantry-type multi-function submerged arc welding (SAW) machine

CNC Plane Drilling Machine

Heavy-Duty Steel Structure Shot Blasting Machine

Note:To get the fastest and most accurate quotation, please include:

(1) Structural drawings showing splice locations;

(2) Member sizes (W-shape, H-section, etc.);

(3) Design code (AISC, EN, GB);

(4) Bolt grade and diameter;

(5) Surface treatment requirement;

(6) Total quantity and delivery deadline.

FAQ:

What is the difference between a splice plate and a gusset plate?

A splice plate joins two collinear members end-to-end to extend their length or transition between sections. A gusset plate connects multiple non-collinear members at a joint (e.g., truss node where diagonals, verticals, and chords meet). Splice plates transfer forces along the member axis; gusset plates transfer forces between members at different angles.

Should I use bolted or welded splice for my project?

It depends on load type, erection method, and inspection access. Bolted splices (especially slip-critical) are preferred for dynamic/fatigue loads, field conditions, and future disassembly. Welded splices are preferred for architectural (no visible bolts), rigid moment connections, and shop-fabricated splices. Many projects use hybrid: shop-welded flanges + field-bolted webs.

Can splice plates be galvanized?

Yes. Hot-dip galvanizing per ASTM A123 is a common surface treatment for splice plates in corrosive environments. However, for slip-critical connections, the galvanized faying surface has a lower slip coefficient (Class C, μ=0.20) compared to blast-cleaned steel (Class A, μ=0.33). This must be accounted for in the design - more bolts or larger plates may be needed.

Where should beam splices be located?

Beam splices are typically located at points of lower bending moment - approximately 1/4 to 1/3 of the span from the support, where moment is roughly 50-75% of the peak. Avoid splicing at midspan (maximum positive moment) or at the support face (maximum negative moment) unless the splice is designed for full moment capacity.