Engineering Catalog

Civil Works & Infrastructure

JNK & SONS LTD provides certified civil engineering solutions. Explore our project categories and technical specifications for procurement.

Flagship MOQ: 5 Tons
ASTM A709 / ISO 9001
Bridge structural steel beam installation
structural

Bridge Structural Steel

High-Tensile Grade Steel for Spans

MaterialGrade 50W Weathering Steel
Tensile450 MPa Yield Strength
CoatingHot-Dip Galvanized Finish
Tolerance± 2mm Precision Cut
StandardAASHTO Compliance
MOQ: 10 Units
ASTM A328 / ISO 14001
Marine bulkhead piling installation
structural

Marine Bulkhead Piling

Corrosion-Resistant Coastal Defense

MaterialHigh-Density Carbon Steel
Diameter600mm – 1200mm Range
ProtectionEpoxy Marine Coating
DepthUp to 30m Penetration
StandardASTM Marine Grade
MOQ: 500 m²
ISO 9001 / ACI 318
Highway corridor concrete paving
structural

Highway Corridor Paving

Heavy-Duty Reinforced Concrete Slab

Material40 MPa Structural Concrete
ReinforceGrade 60 Rebar Mesh
Thickness300mm Depth Standard
FinishBroomed Traction Surface
StandardDOT Specification
MOQ: 20 Units
ASTM C76 / ISO 9001
Precast concrete drainage culvert
drainage

Drainage Culvert System

Precast Reinforced Concrete Culverts

MaterialClass IV Reinforced Concrete
Dimensions1200mm x 1200mm Box
JointsRubber Gasket Seal
LoadHS-25 Traffic Rated
StandardASTM C76 Class IV
MOQ: 5 Piles
ISO 9001 / ACI
Deep foundation piling works
drainage

Foundation Piling

Deep Foundation Bored Piles

MaterialCast-in-Place Concrete
Diameter900mm – 1500mm
ReinforceFull-Length Steel Cage
DepthUp to 45m Depth
StandardGeotechnical Spec
MOQ: 10 Units
ASTM C478 / ISO
Stormwater manhole unit
drainage

Stormwater Manhole

Precast Access & Inspection Units

MaterialPrecast Concrete Ring
Diameter1200mm Standard
AccessCast Iron Cover
SealWatertight Gasket
StandardASTM C478
MOQ: 1000 m³
ISO 14001 / OSHA
Bulk earthwork site grading
earthworks

Earthwork Excavation

Bulk Site Grading & Preparation

MaterialCompacted Soil Fill
Density95% Proctor Density
EquipmentGPS-Guided Dozers
Slope3:1 Gradient Control
StandardSite Safety Code
MOQ: 50 Blocks
ASTM C1372 / ISO
Retaining wall block system
earthworks

Retaining Wall System

Modular Gravity Wall Blocks

MaterialHigh-Strength Concrete
Weight450kg per Block
LockingInterlocking Keyway
DrainageIntegrated Weep Holes
StandardASTM C1372
MOQ: 500 m²
ISO 9001 / ASTM
Slope stabilization geogrid
earthworks

Slope Stabilization

Geogrid & Soil Reinforcement

MaterialHigh-Density Polymer
Strength80 kN/m Tensile
ApplicationErosion Control
InstallationAnchor Pin System
StandardASTM D6637
Engineering Capabilities

Need Custom Civil Engineering Solutions?

JNK & SONS LTD provides full-scale civil engineering, from structural design to site preparation. Our team handles complex infrastructure projects with precision and compliance.

TECHNICAL PROPOSAL48h turnaround

Ready to start your civil project with us?

Whether for infrastructure or industrial manufacturing, JNK & SONS LTD provides precise engineering and procurement transparency for your site.

Direct engineering support — Mon to Fri, 8am to 6pm

48h Response

Detailed project estimates delivered with speed.

Certified Works

Full compliance with industrial safety standards.

Secure Data

Strict protection of your engineering blueprints.

Certified engineering standardsFull project warranty