
Fabricated directly at Patna Central Works. Supplied with Mill Test Certificates (MTC) certifying tensile yield and dimensional tolerances.
Cuplock Scaffolding System (Verticals & Ledgers)

Get Flat 10% OFF on this product when requesting your formal BOQ quote today. (Use Code: JMKNAVRATRI10)
JMK Engineering & Developers manufactures premium grade modular Cuplock Scaffolding Systems in compliance with IS 1161 / IS 1239 and MoRTH bridge staging specifications. Constructed with 48.3mm OD high-yield steel tubes (3.2mm/4.0mm wall thickness), hot-dip galvanized or coated in anti-corrosive industrial red oxide. Standard vertical lengths of 1.0m, 1.5m, 2.0m, 2.5m, and 3.0m with cups welded at 500mm intervals. Ledgers available in lengths of 1.0m, 1.2m, 1.5m, 1.8m, 2.0m, and 2.5m featuring forged steel blade ends that lock securely into captive cups.
Verified Technical Specifications
| Material Standard | Gauge / Thickness | Design Load Capacity | Standard Dimensions |
|---|---|---|---|
| IS 1161 YST 210 / IS 1239 Medium Class Mild Steel | 2.0mm - 4.0mm | 20.0 Tonnes (Proof Loaded) | 48.3 mm OD Tube |
| Tube Diameter | 48.3 mm Outer Diameter |
| Wall Thickness | 3.2 mm / 4.0 mm (Heavy Duty) |
| Cup Spacing | 500 mm (0.5m) Centers |
| Locking Mechanism | Forged Top Cup & Welded Bottom Cup |
| Load Capacity | Up to 7.5 Tonnes per Leg (with diagonal bracing) |
| Yield Strength | 210 - 310 MPa High Tensile Steel |
| Standard Lengths | 1.0m, 1.5m, 2.0m, 2.5m, 3.0m |
| Manufacturer | JMK Engineering & Developers, Patna Works |
Turnkey Project Uses (Civil Engineering Context)
Designed for heavy monolithic pours, floor 4+ slab staging, retaining walls, and high-pressure culvert formwork with zero plate deflection.
Tested for extreme dynamic load distribution across elevated metro rail corridors, flyovers, and expressway segment assemblies.
Multi-Tenant Stock & Logistics Hubs
| Regional Logistics Node | Allocated Buffer | Dispatch Status | Site Lead Time (ETA) |
|---|---|---|---|
Delhi NCR Logistics Depot IMT Manesar / Dwarka Expressway Corridor | 5.2 Tons | In Stock | 2 Days Delivery |
Patna HQ Central Works Didarganj Industrial Zone, Patna | 12.8 Tons | Direct Works Buffer | Immediate Dispatch (0 Days) |
Kolkata Eastern Depot Dankuni Multi-Modal Terminal | 7.0 Tons | In Stock | 4 Days Delivery |
Mumbai Western Hub MIDC Taloja / JNPT Expressway Node | 6.4 Tons | In Stock | 3 Days Delivery |
Complementary Formwork & Structural Components
Scaffolding Adjustable Prop Jack
Heavy-duty Scaffolding Adjustable Prop Jack manufactured by JMK Engineering & Developers to IRC, MORTH, and IS standards for bridge and infrastructure projects.

Adjustable Props Scaffolding Jack
Heavy-duty Adjustable Props Scaffolding Jack manufactured by JMK Engineering & Developers to IRC, MORTH, and IS standards for bridge and infrastructure projects.

Adjustable U Head Scaffolding Jack
Heavy-duty Adjustable U Head Scaffolding Jack manufactured by JMK Engineering & Developers to IRC, MORTH, and IS standards for bridge and infrastructure projects.
