Frame scaffolding on the 2026 export market is sold primarily in welded H-frame or door-frame modular kits, with the current price band on Made-in-China.com running US$40.00–80.00 per set at a 50-set MOQ from audited Tianjin suppliers [S1].
That price window covers standard 1219×1700 mm and 1219×1930 mm hot-dip-galvanised frames plus cross braces and base jacks; the same supplier class publishes a 6000-set MOQ with 50,000 sets/month capacity on integrated formwork-scaffolding bundles routed through Tianjin port [S3].
Definition and Scope: What Counts as "Frame" Scaffolding
Frame scaffolding is a fabricated modular system built from welded vertical end frames (H-frame or door-frame) joined by horizontal cross braces, base jacks, and pin/coupon couplers — distinct from tube-and-clamp (coupler) scaffolding and from system scaffolding such as ringlock or cuplock [S1].
The 2026 Made-in-China product taxonomy lists "Frame Scaffolding Fitting" as a standalone category under Construction Equipment & Tools / Scaffolding / Coupler Scaffolding, with filter chips for SGS-audited factories and supplier tier [S1]. The Okorder steel frame-formwork listing further confirms that "frame scaffolding" in export catalogues bundles the welded frame, the formwork panel interface, and the prop jack as a single supply line [S3].
Selection Criteria: Load Class, Steel Grade, Finish and Coupler Type
Engineers select a frame scaffold by four engineering variables that determine price and certification: (1) duty rating — light (≤3 kN/m² working load), medium (3–5 kN/m²) or heavy/shoring (≥5 kN/m²); (2) tube OD/wall — typically 42.4×2.0 mm or 48.3×2.5 mm Q235/Q345; (3) surface — pre-galvanised, hot-dip galvanised (HDG), or powder-coated; and (4) coupler — pin-type, wedge-type, or drop-forged coupler [S1].
For international projects, the 2026 supply base exported through Tianjin defaults to Q235 hot-dip-galvanised tube with 42.4 mm OD, drop-forged couplers, and a working load limit published in the manufacturer's test certificate [S1][S3]. Buyers should request the test report per EN 12811-1 (a European standard for performance and general design of temporary works) for European sites, or per AS/NZS 1576 for Australia/NZ, because no single global harmonised standard governs frame-scaffold duty classes.
Who Frame Scaffolding Is For — And Who It Is Not For
Frame scaffolding is built for: façade access on low- to mid-rise residential and commercial builds, plastering and painting crews, and concrete formwork support up to about 5 kN/m²; it is the default for general contractors who need fast erect/dismantle cycles on repetitive floor plates [S3].
Frame scaffolding is NOT for: industrial process-vessel access (use ringlock or cuplock for high leg loads), irregular geometry on heritage façades (use tube-and-coupler for flexibility), or suspended work on high-rise façades above ~45 m (use mast-climbing work platforms). For phase-conveyed bulk-material sites, the right match is the pneumatic conveyor spec map, not a frame-scaffold system; see the phase and material spec map for those bulk-line decisions.
Comparison of the Three Main Modular Options
Frame, ringlock and cuplock scaffold each answer a different load/geometry question — the table below lines them up against the four variables that drive a buy order [S1].
Frame (H/door): cost US$40–80/set at 50-set MOQ from Tianjin; load ≤5 kN/m²; erect speed fast for repetitive façades; geometry fit good for straight runs, poor for curves [S1].
Cuplock (cup-node): cost roughly comparable to ringlock; load up to 6 kN/m²; erect speed fast; geometry fit good for orthogonal grids, poor for non-90° layouts (2025-08).
On low- to mid-rise façade work where labour cost dominates, the frame system wins on total installed cost per m²; on industrial or irregular sites, ringlock's 8-direction rosette absorbs the geometry penalty and typically returns the cost premium in 2–3 floors of reuse.
Real Use Cases and Sourcing Lead Times
A 50,000 m² residential façade in Southeast Asia running 8 m lift heights typically pulls 1,200–1,500 frame sets plus 4,000–5,000 cross braces and 1,500 base jacks — that is one full bulk-vessel order against a 50,000 sets/month Tianjin supply line [S3]. Lead time from PO to FOB Tianjin is 25–35 days for HDG stock sizes, 45–60 days for custom heights, per typical 2026 supplier confirmations.
Buyers comparing frame-scaffold to a work-bench or lift-table procurement will see the same logic — MOQ-driven unit price and a port-driven lead-time curve. For a side-by-side on capacity, MOQ and lead time on a complementary category, the hydraulic lift table price 2026 guide maps how MOQ ladders affect landed cost.
Limitations, Failure Modes and Standards Discipline
The dominant frame-scaffold failure modes are base-jack pull-out on soft ground, missing cross braces on the top lift, and mixed-component frames from different galvanising batches; each is a documented root cause of collapse reports in temporary-works literature (2025-08). For work platforms adjacent to dust-laden process lines, see the dust collector system selection map for ventilation constraints that often dictate scaffold enclosure design. [S1]
Standards discipline: the buyer should pin the test certificate to a named standard on the datasheet — EN 12811-1 for Europe, AS/NZS 1576 for Australia/NZ, OSHA 1926.451 for US sites — and refuse any quotation that ships "to customer request" without the standard citation. For projects running ATEX 2014/34/EU zones, frame scaffolds are non-electrical equipment and fall outside the directive, but any powered access platform integrated with the frame (hoist, winch) does fall in scope and must carry the category marking.
Sourcing Checklist and Trackable Signals for Q3 2026
Sign-off items before PO: (1) test certificate to a named standard, (2) Q235/Q345 mill certificate with heat number, (3) HDG coating thickness in µm (typical spec ≥55 µm), (4) coupler drop-forge grade, (5) base-jack SWL stamp, (6) FOB Tianjin price inside the US$40–80/set band for stock sizes [S1][S3].
Trackable signals into late Q3 2026: the Made-in-China.com Frame Scaffolding Fitting category page is updated on a roughly 2–4 week supplier-reindex cycle — watch the listing count and the spread of "Diamond Member Audited Supplier" badges for capacity changes [S1]; the Okorder bulk supply figure (50,000 sets/month) is the baseline for the Tianjin export cluster [S3].
For component-level specifications, see linear guide, and crossed roller guide.