What Is Walk-Through Frame Scaffolding?
Walk-through frame scaffolding is a modular H-frame scaffold system with an open center designed for workers and materials to pass through. It is the preferred choice for masonry, stucco, plastering, painting and facade work across North America, Latin America, Europe and the Middle East.
Built for Speed, Strength & Walk-Through Access
Each walk-through frame set typically consists of two H-frames, two sets of cross braces, four base jacks, and coupling pins or C-lock connectors. The open walk-through design eliminates the need to climb around the frame, improving productivity and safety on busy job sites.
At Sino East, we manufacture walk-through frames in standard 3' and 5' widths and multiple heights (4', 5', 6'8", 7' and custom). Frames are welded from Q235 or Q345 steel tube and finished with hot-dip galvanizing for long-term outdoor use.
- Open walk-through center for material and personnel access
- Compatible with cross braces, screw jacks, base plates and planks
- C-lock or snap-on connection options available
- Standard and custom sizes for American, European and Middle East markets
Walk-Through Frame Scaffolding Advantages
Our frames are engineered for contractors who need fast assembly, reliable load capacity and consistent quality on every shipment.
Fast Assembly
C-lock and snap-on connections allow frames to be erected in minutes without loose bolts or special tools, reducing labor time on site.
Walk-Through Opening
The large open center lets workers, wheelbarrows and materials pass through, making it ideal for masonry, stucco and facade work.
Hot-Dip Galvanized
Minimum 80μm galvanized coating protects against rust and corrosion, giving a long service life for outdoor and rental applications.
High Load Capacity
Q345 steel option offers higher strength and load capacity for heavy-duty masonry and multi-tier scaffold towers.
Custom Finishes
Powder coating in yellow, orange, red or other RAL colors available for branding, rental fleets and indoor projects.
Global Export
Container-optimized packing and full documentation for export to USA, Canada, Mexico, Europe, Middle East and Southeast Asia.
Walk-Through Frame Scaffolding Images
Actual production and stock photos from our factory in Tianjin, China.
Walk-Through Frame Scaffold Parts
A complete frame set includes the main frames, cross braces, connection hardware and accessories for safe assembly.
Walk-Through H-Frame
Main vertical frame with walk-through opening in Q235/Q345 steel.
Cross Braces
Diagonal braces for lateral stability in 5', 7', 8' and 10' lengths.
C-Lock / Snap-On Pins
Fast connection pins for stacking frames securely without loose bolts.
Screw Jacks & Base Plates
Adjustable screw jacks and flat base plates for leveling on uneven ground.
Walk-Through Frame Scaffolding Specifications
Standard dimensions and material specifications for our H-frame walk-through scaffolding systems.
System Specifications
| Property | Specification |
|---|---|
| Frame Type | H-frame walk-through / C-lock frame / Snap-on frame |
| Tube Material | Q235 steel (standard) / Q345 steel (heavy duty) |
| Main Tube OD | 48.3mm × 2.5mm / 3.0mm wall thickness |
| Standard Widths | 914mm (3') / 1219mm (5') |
| Standard Heights | 1219mm (4') / 1524mm (5') / 1700mm / 1930mm / 2032mm (6'8") |
| Surface Finish | Hot-dip galvanized 80μm / Painted / Powder coated |
| Connection Type | C-lock pin / Snap-on pin / Coupling pin with spring clip |
| Standards | OSHA, ANSI, CSA, BS1139, EN74 / EN12811 compatible |
| Load Capacity | Up to 25 kN per frame (depending on configuration) |
Walk-Through Frame Common Sizes
| Item Code | Width | Height | Common Application |
|---|---|---|---|
| SE-WSF-01 | 914mm (3') | 1219mm (4') | Light access, residential work |
| SE-WSF-02 | 914mm (3') | 1524mm (5') | Stucco, plastering |
| SE-WSF-03 | 914mm (3') | 2032mm (6'8") | Standard walk-through access |
| SE-WSF-04 | 1219mm (5') | 2032mm (6'8") | Heavy-duty masonry |
| SE-WSF-05 | 1219mm (5') | 1700mm | Custom facade work |
| SE-WSF-06 | Custom | Custom | OEM / project-specific design |
Quality Control & Export Standards
Every walk-through frame is inspected during welding, surface treatment, dimensional checking and final packing. We provide mill test certificates, inspection reports and compliance documentation for customs and project acceptance.
With a 65,000 m² factory in Tianjin, China, we can produce and export full container loads of frame scaffolding sets with matching accessories, ready for immediate use on your job site.
- ISO 9001 quality management system
- Raw material chemical & physical testing
- Galvanizing thickness inspection
- Dimensional tolerance checks before packing
- Container loading photos and packing lists
Walk-Through & Mason Frame Scaffolding Master Material List
Sino East Steel Group manufactures standard North American (OSHA/ANSI compliant) and custom walk-through frames, mason frames, narrow access frames, and matching accessories. Built from high-yield structural steel tubes (OD 42.7mm / 1.69" and OD 41.28mm / 1.625" Schedule 40 options) with precision robotic welding and hot-dip galvanized or high-adhesion powder coated finishes.
1. Standard American Frame Units & Specifications
| Item Code | Frame Type & Profile | Dimensions (W × H) | Main Leg Tube (OD × T) | Lock Type Options | Finish / Coating | Unit Weight | OSHA Duty Class |
|---|---|---|---|---|---|---|---|
| SE-WTF-5064 | 5' Walk-Through Frame with Open Passage | 5' × 6'4" (1524 × 1930 mm) | Ø42.7 × 2.4 mm (Q235/Q345) | Drop Lock / Snap-On | Powder Coated / HDG | 19.80 kg (43.65 lbs) | Heavy Duty (75 psf) |
| SE-WTF-5068 | 5' Walk-Through Frame (Tall Clearance) | 5' × 6'8" (1524 × 2032 mm) | Ø42.7 × 2.4 mm | Drop Lock / C-Lock | Powder Coated / HDG | 20.60 kg (45.41 lbs) | Heavy Duty (75 psf) |
| SE-MSF-5050 | 5' Mason Frame (Ladder Type) | 5' × 5'0" (1524 × 1524 mm) | Ø42.7 × 2.4 mm | Drop Lock / Flip Lock | Powder Coated / HDG | 18.20 kg (40.12 lbs) | Heavy Duty (75 psf) |
| SE-MSF-5030 | 5' Mason Frame (Low Level / Base) | 5' × 3'0" (1524 × 914 mm) | Ø42.7 × 2.4 mm | Drop Lock / Fast Lock | Powder Coated / HDG | 12.50 kg (27.56 lbs) | Heavy Duty (75 psf) |
| SE-NWF-3064 | 3' Narrow Walk-Thru Frame (Corridor) | 3' × 6'4" (914 × 1930 mm) | Ø42.7 × 2.4 mm | Drop Lock / Snap-On | Powder Coated / HDG | 16.40 kg (36.16 lbs) | Medium Duty (50 psf) |
| SE-JAP-1217 | Japanese Standard Walk-Through Frame | 1219 × 1700 mm (4' × 5'7") | Ø42.7 × 2.2 / 2.4 mm | Drop Pin / Hook Lock | Hot-Dip Galvanized | 14.80 kg (32.63 lbs) | JIS / TIS Standard |
2. Cross Braces, Walkboards & Essential Frame Accessories
| Item Code | Component Description | Span × Stud Spacing | Material & Spec | Finish | Unit Weight | Standard Packaging |
|---|---|---|---|---|---|---|
| SE-CB-7040 | Galvanized Tubular Cross Brace | 7' Span × 4' Height (2134 × 1219 mm) | Ø25.4 × 1.5 mm Pre-Galv Tube | Hot-Dip / Pre-Galv | 4.20 kg (9.26 lbs) | 50 pcs / Steel Bundle |
| SE-CB-1040 | Galvanized Tubular Cross Brace | 10' Span × 4' Height (3048 × 1219 mm) | Ø25.4 × 1.5 mm Pre-Galv Tube | Hot-Dip / Pre-Galv | 5.60 kg (12.35 lbs) | 50 pcs / Steel Bundle |
| SE-CB-7020 | Galvanized Cross Brace (Short Rise) | 7' Span × 2' Height (2134 × 610 mm) | Ø25.4 × 1.5 mm Pre-Galv Tube | Hot-Dip / Pre-Galv | 3.80 kg (8.38 lbs) | 50 pcs / Steel Bundle |
| SE-PIN-01 | Coupling Pin with 1" Collar | Ø36 × 225 mm (for Ø42.7mm Tube) | Seamless Steel Tube + Spring Clip | Zinc Plated / E-Galv | 0.45 kg (0.99 lbs) | 100 pcs / Carton (2500/pallet) |
| SE-ALUP-719 | Aluminum-Plywood Walkboard / Deck | 7' Length × 19.25" Width (2134 × 489 mm) | 6061-T6 Alum + 1/2" Marine Plywood | Anodized / Sealed Ply | 14.20 kg (31.31 lbs) | 25 pcs / Wood Crate |
| SE-ALUP-1019 | Aluminum-Plywood Walkboard / Deck | 10' Length × 19.25" Width (3048 × 489 mm) | 6061-T6 Alum + 1/2" Marine Plywood | Anodized / Sealed Ply | 19.50 kg (42.99 lbs) | 20 pcs / Wood Crate |
| SE-SJ-24S | Solid Stem Adjustable Screw Jack | Ø34 mm × 600 mm (24" Length) | Q235 Solid Acrow Thread + Base Plate | Electro / HD Galvanized | 4.80 kg (10.58 lbs) | 250 pcs / Steel Crate |
| SE-GRP-42 | End Frame Guardrail Post with Lock | 42" Height (1067 mm) | Ø42.7 mm Steel Tube with Wedges | Powder Coated / HDG | 3.60 kg (7.94 lbs) | 50 pcs / Bundle |
OSHA 1926.451 & ANSI/SSFI SC100-5/05 Structural Load Capacities
All Sino East walk-through and mason frame scaffolding assemblies are designed with a safety factor of 4:1 as mandated by OSHA regulations and tested under compressive load cells. Below is the allowable leg load and deck load matrix across typical tier configurations.
| Scaffold Frame Configuration | Allowable Leg Load (4:1 Safety Factor) | Ultimate Failure Load per Leg | Uniform Deck Load Rating | Maximum Free-Standing Height | Design Governing Standard |
|---|---|---|---|---|---|
| 5' × 6'4" Walk-Through (Single Tier) | 4,650 lbs (20.68 kN) | 18,600 lbs (82.74 kN) | 75 psf (Heavy Duty Masonry) | 4 × Base Width (20 ft without ties) | OSHA 1926.451 / ANSI A10.8 |
| 5' × 6'4" Walk-Through (3 Tiers with Bracing) | 4,150 lbs (18.46 kN) | 16,600 lbs (73.84 kN) | 50 psf (Medium Duty Building Work) | Tied every 26 ft vertically / 30 ft horiz. | OSHA 1926.451 / SSFI SC100 |
| 5' × 5'0" Mason Frame (Single Tier) | 5,100 lbs (22.68 kN) | 20,400 lbs (90.74 kN) | 75 psf (Heavy Duty Stucco & Block) | 4 × Base Width (20 ft without ties) | OSHA 1926.451 / ANSI A10.8 |
| 3' × 6'4" Narrow Frame (Single Tier) | 3,850 lbs (17.12 kN) | 15,400 lbs (68.50 kN) | 25 psf (Light Duty Painting/Finishing) | 4 × Base Width (12 ft without ties) | OSHA 1926.451 / SSFI SC100 |
| 1219 × 1700mm Japanese Walk-Thru Frame | 18.50 kN (4,159 lbs) | 74.00 kN (16,636 lbs) | 3.50 kN/m2 (Civil Access Standard) | Tied at 5.0m intervals | JIS A8951 / TIS 107 |
🔒 Heavy-Duty Drop Lock System
Features a 1/2" cold-formed drop pin with gravity latch. Ensures fast, secure locking of cross braces without loose nuts or specialized tools, eliminating disengagement risks on high-rise jobsites.
🛡️ Industrial Powder Coating & HDG
Electrostatic thermoset polyester powder coating baked at 200°C for exceptional scratch and UV resistance, or ISO 1461 hot-dip galvanizing with ≥55μm zinc thickness for marine and petrochemical environments.
🤖 Precision Robotic Arm Welding
100% automated 6-axis robotic welding for full-penetration circumferential tube joints. Eliminates cold laps and porosity, exceeding AWS D1.1 structural welding code specifications.
40HQ & 20GP Ocean Container Loading Calculation Table
To optimize shipping costs for American, Canadian, and global distributors, we provide engineered packing plans utilizing heavy-duty steel bundling racks and nested palletization. Below are standard full-container load (FCL) capacities.
| Scaffolding Item / Component | Packaging Method | Quantity per 20GP Container | Quantity per 40HQ Container | Estimated 40HQ Gross Weight |
|---|---|---|---|---|
| 5' × 6'4" Walk-Through Frames | Stacked in heavy steel racks (25 pcs/rack) | 300 pcs (12 racks) | 650 ~ 700 pcs (26-28 racks) | 13,500 ~ 14,500 kg |
| 5' × 5'0" Mason Ladder Frames | Stacked in heavy steel racks (25 pcs/rack) | 350 pcs (14 racks) | 750 ~ 800 pcs (30-32 racks) | 14,200 ~ 15,100 kg |
| 7' × 4' Galvanized Cross Braces | 50 pcs per steel strapped bundle | 1,200 pcs (24 bundles) | 2,500 ~ 3,000 pcs (50-60 bundles) | 12,600 ~ 15,120 kg |
| 7' × 19.25" Aluminum Plywood Decks | 25 pcs per strapped pallet | 200 pcs (8 pallets) | 450 ~ 500 pcs (18-20 pallets) | 6,400 ~ 7,100 kg |
| Complete Mixed Turnkey Set (40HQ) | 250 Frames + 250 Cross Braces + 125 Decks + 500 Pins + 100 Jacks | -- (Weight limited) | 1 Complete Jobsite Set (Over 1,200 components) | 24,500 kg (Full Payload) |
Frequently Asked Questions
Project Tender Kit & Engineering Documentation
Empowering EPC general contractors, commercial developers, and equipment rental companies with certified engineering files, lab testing records, and BIM models for rapid bidding and compliance approval.
Certified Lab Test Reports
Full destructive compression, tensile, and slip load test certificates from SGS / TÜV conforming to EN 12810, EN 74-1 Class B, and OSHA standards.
EN / OSHA / AS/NZSMill Test Certificates (MTC 3.1)
Official EN 10204 3.1 chemical composition and mechanical property mill sheets from Baosteel/Shougang certified prime steel coils.
Traceable Heat No.BIM & 3D CAD Component Library
Parametric 1:1 scale DWG / Revit families for structural shoring calculation, falsework modeling, and clash detection in Navisworks.
Revit / DWG / IFCContainer Payload Manifest (40HQ)
Customized 20GP & 40HQ container packing blueprints, bundle diagrams, and gross weight distributions to maximize ocean freight efficiency.
25-27 Tons Max LoadGlobal Infrastructure Projects & Large-Scale Deliveries
Proven supply chain execution for multi-million dollar commercial, bridge, and industrial projects worldwide.
Riyadh & Dubai Commercial Shoring
Supplied heavy-duty ringlock shoring towers for a 48-story commercial complex. Zero failure recorded under 80 kN leg load requirements with rapid 35-day phased delivery.
Vietnam & Thailand Highway Bridges
Fabricated high-precision circular concrete column forms with quick-stripping corners for elevated highway piers. 300+ pours completed with smooth architectural finish.
USA & Canada Industrial Facilities
Turnkey delivery of complete walk-through masonry frame packages, cross braces, and aluminum-plywood decks for large logistics warehousing facilities.
Rotterdam & Antwerp Maintenance
Supplied high-volume tube and clamp scaffolding for shipyard drydocking and offshore maintenance. 100% compliant with European industrial safety protocols.