PORTS · WATERFRONTS · MARINE STRUCTURES
Marine tie bars & anchorage components.
Marine tie bars, anchorage and connection components for quay walls, jetties and waterfront structures.
Tie bar01 / Explore component ↗
Ball-cage system02 / Explore component ↗
Coupler03 / Explore component ↗
Marine tie-bar and anchorage assembly
Tie barCarries tension between the wall-side connection and the anchorage.
Supply details & enquiry ↗From bar to connection.
Select tie bars, connections and anchorage components for your project.
Explore by function. Final thread, seating and connection compatibility is confirmed from project drawings.
01 Tie bars
Load-carrying members to project drawings. 01 components +
01 Tie bar ↗
- Carries tension between the wall-side connection and the anchorage.
02 Connections & adjustment
Thread, movement and adjustment interfaces. 05 components +
11 Ball-cage system ↗
- Articulating connection between tie-bar segments or at a project-defined anchorage.
- The assembled view shows the connection in context.
02 Coupler ↗
- Joins coaxial threaded bar ends to extend a tie assembly.
03 Turnbuckle ↗
- Cylindrical threaded adjustment sleeve for setting tie-assembly length.
- Thread handedness, engagement and locking follow the project design.
07 Pad eye ↗
- Pin-connected eye fitting for a project-defined bar-end anchorage.
08 Hinge coupler ↗
- Hinged connection between tie components where the design calls for articulation.
03 Anchorage
Project-specific load transfer and seating. 09 components +
04 Hex nut ↗
- Threaded hexagonal end fastener bearing against the specified plate or seating.
05 Round nut ↗
- Round threaded end fastener for the specified anchorage interface.
06 Swivel hex nut ↗
- Swivel bearing nut used with its matched seating.
- Permitted articulation is project-defined.
09 Captive nut ↗
- Retained-nut anchorage assembly for a drawing-defined connection.
12 Bearing plate ↗
- Transfers the bar-end bearing reaction into the supporting interface.
13 Swivel plate ↗
- Shaped bearing seat used with matched swivel hardware for a project-defined angular interface.
14 Anchor plate ↗
- Anchorage plate used at the pile interface, including drawing-defined connections with pad eyes.
15 T-plate ↗
- T-shaped anchorage fitting for a drawing-defined supporting interface.
16 Angle seating ↗
- Provides a bearing interface on an inclined supporting surface.
Also: Swivel round nuts. Spherical-bearing round nuts used with matched seating.
04 Support & installation
Waling, spacing and supporting interfaces. 06 components +
10 Waling bolt ↗
- Connects the sheet-pile wall to the waling beam at the specified attachment.
17 Splicing plate ↗
- Connects adjacent waling-beam lengths at a designed splice.
18 Waling beam ↗
- Transverse beam within the wall anchorage arrangement, matched to the design loads and connections.
19 Spacer ↗
- Maintains the specified gap between paired waling beams.
20 Stiffener ↗
- Local beam reinforcement at project-defined load or support locations.
21 Support bracket ↗
- Supports the waling arrangement at the wall during the specified installation stage.
Match the selected component to the delivery records
Use the selected component name with the project BOM and drawing revision. State whether the enquiry covers bar stock, a prepared part or specified matching hardware, then identify the inspection records required for that supply stage.
| Component | Drawing or interface to identify | Records to agree |
|---|---|---|
| Tie bar | Bar dimensions, end details and specified material condition. | Material identity, dimensions and the specified mechanical checks. |
| Coupler | Both mating threads, engagement and the condition after protection. | Thread and dimensional inspection for the specified parts. |
| Turnbuckle | Mating ends, adjustment range and assembly drawing. | Dimensions, thread fit and the agreed supplied condition. |
| Plate and nut | Plate geometry, bearing faces, thread and mating bar. | Material and dimensional records linked to the ordered items. |
| Ball-cage connection | Approved assembly and component drawings, seating and mating parts. | Order-specific component inspection; identify any assembly checks separately. |
The component illustrations and material examples do not certify a project assembly. Final supply scope, compatibility and release records are agreed against the drawings.
A CORE CONNECTION SYSTEM
Ball-cage connections and anchorage details.
Review the assembly and anchorage interfaces against your project drawings.
Review Ball-cage supply ↗
VIEW ASSEMBLY & ANCHORAGE POSITION ↗Application and connection references
APPLICATIONS
Tie bars for quay walls, waterfronts and marine structures.
Quays & Jetties
Explore Application
Riverbanks & Waterfronts
Explore Application
Offshore & Nearshore
Explore ApplicationPORT & HARBOUR STRUCTURES
Quays & Jetties
For quay walls, jetties and their anchorage, we supply marine tie bars, anchorage plates and nuts, and connection and adjustment components. The purchaser defines structural loads and layout; tie force, threads and protection are confirmed before supply.
Project Checklist
- Design tie force, permanent and cyclic loads
- Quay-wall, anchorage and adjustment interfaces
- Protection for atmospheric, splash and immersed zones
WATERFRONT INFRASTRUCTURE
Riverbanks & Waterfronts
For riverbank retaining structures and waterfront ties, we confirm bar material, end geometry and anchorage components. Project drawings define protection at the embedded-to-exposed boundary, maintenance needs and inspection access.
Project Checklist
- Anchorage length, thread engagement and transition geometry
- Continuous protection across buried and exposed sections
- Design life, maintenance and inspection access
MARINE STRUCTURES
Offshore & Nearshore
For offshore platforms, marine structures and exposed structural connections, we supply marine tie bars and post-tensioning products. Loads, material properties, anchorage and acceptance requirements follow the engineering design.
Project Checklist
- Load spectrum, fatigue and minimum service temperature
- Exposure, design life and protection interfaces
- Post-tensioning specifications, accessories and inspection basis
Bars & Accessories
Match supply to your project list
Drawing Review
Confirm dimensions, threads and interfaces
Inspection & Records
Agree acceptance and delivery records
Packing & Delivery
Confirm marking, protection and shipment
Project specifications
Send drawings and a component list; confirm material, dimensions, processing, protection, inspection and delivery.
JOTAIN supplies components to agreed drawings and specifications. The purchaser’s engineering team defines system design, loading, anchorage layout, fatigue assessment and final acceptance.
Engineering inputs to confirm
- Loads & service: Design tie force, permanent and cyclic loads, fatigue spectrum, impact/accidental loads, connection stiffness, minimum service temperature and toughness.
- Threads & adjustment: Form, pitch, handedness, engagement, adjustment range, articulation, locking and fit after coating.
- Anchorage interfaces: Plate shape/thickness, holes, bearing faces, bar-end transitions, embedment, installation space and accessory quantities.
- Exposure & protection: Atmospheric, splash, immersed or buried service; design life, corrosion allowance, coating/galvanising, thread sealing, cathodic interfaces and maintenance access. Maintain protection across buried-to-exposed transitions.
- Material & processing: Grade standard, section size, condition, machining allowance and agreed properties. Confirm hydrogen-related risks and post-process controls for the protection process.
- Inspection & release: Heat traceability, test positions/sampling, mechanical tests and UT when specified; dimensional/assembly checks, coating records, marking, protective packing and release documents.
Round-bar material supply ranges
| Grade | Diameter | Length | Processing / condition |
|---|---|---|---|
| 42CrMo4 / 4140 | 20–400 mm | 3–12 m | Black / peeled / machined; QT or thread-ready |
| 35CrMo | 20–350 mm | 3–12 m | Hot rolled / forged / machined; QT or fastener bar route |
| 40Cr | 20–300 mm | 3–12 m | Hot rolled / forged / machined; heat-treated or machined blank |
Round-bar supply ranges, not finished-system capacities or PT-bar performance specifications. Grade substitutions, product standards, properties, test positions and acceptance criteria are order-specific.
42CrMo4: ISO 683-2; SAE 4140: SAE J404. Proposed SAE 4135/34CrMo4 substitutions for 35CrMo, or 41Cr4/SCr440 for 40Cr, require review; names do not establish automatic equivalence or system compliance.
Inspection & documents
Agree test scope, sampling, acceptance criteria and release records before production.
Quality & document samples · Chemistry and mechanical results example · Heat and batch fields example
Redacted material-document examples, not evidence of finished marine assembly performance.
DNV-RP-C203 is fatigue-assessment background where specified; ISO 12944-8 is paint-specification background. Use project editions. These references do not imply product certification or design approval.
Supply stages
Material selection · Heat treatment · Machining or peeling · Threads and ends · Specified protection · Inspection and packing
Steps depend on the product and order.
Additional bar & accessory routes
Additional options include anchor rods, marine machinery blanks, PT bars and accessories, and grouting and protection materials, subject to the agreed order scope.
- Anchor & threaded rods: threaded rods and anchor bolts to drawings.
- Marine machinery blanks: alloy-steel shaft, pin and fastener blanks.
- Smooth PT bars : smooth bar with threaded ends; fully threaded PT bars : continuous threads; cold-rolled PT bars : cold-rolled, fully threaded bars. Strength class, thread specification and suitability require project confirmation.
- Marine connections & anchorage: plates/nuts, couplers, clevises and turnbuckles.
- PT accessories: PT bar couplers, PT bar nuts, bearing plates, washers / spherical washers, spherical hex nuts, anchorage-zone helical reinforcement, PT bar pocket formers, pocket-former spacer nuts, duct collars / trumpets, fibre-reinforced nylon end caps.
- Grouting & protection: cement grout; wax, heat-shrink sleeves and corrosion-protection materials.
Send the product list, drawings, quantity and delivery destination.
Send a project enquiry ↗Component details
Turnbuckle
Cylindrical threaded adjustment sleeve for setting tie-assembly length. Thread handedness, engagement and locking follow the project design.
Enquire with JOTAIN ↗Hex nut
Threaded hexagonal end fastener bearing against the specified plate or seating.
Enquire with JOTAIN ↗Swivel hex nut
Swivel bearing nut used with its matched seating. Permitted articulation is project-defined.
Enquire with JOTAIN ↗Hinge coupler
Hinged connection between tie components where the design calls for articulation.
Enquire with JOTAIN ↗Waling bolt
Connects the sheet-pile wall to the waling beam at the specified attachment.
Enquire with JOTAIN ↗Ball-cage system
Articulating connection between tie-bar segments or at a project-defined anchorage. The assembled view shows the connection in context.
Enquire with JOTAIN ↗Bearing plate
Transfers the bar-end bearing reaction into the supporting interface.
Enquire with JOTAIN ↗Swivel plate
Shaped bearing seat used with matched swivel hardware for a project-defined angular interface.
Enquire with JOTAIN ↗Anchor plate
Anchorage plate used at the pile interface, including drawing-defined connections with pad eyes.
Enquire with JOTAIN ↗Waling beam
Transverse beam within the wall anchorage arrangement, matched to the design loads and connections.
Enquire with JOTAIN ↗Stiffener
Local beam reinforcement at project-defined load or support locations.
Enquire with JOTAIN ↗Support bracket
Supports the waling arrangement at the wall during the specified installation stage.
Enquire with JOTAIN ↗Component specifications, materials and inspection
PUBLISHED BAR SUPPLY RANGE
Candidate Bar Materials & Supply Ranges
Review material against loads, fatigue, toughness, section size, thread processing, corrosion protection and the approved project specification.
42CrMo4 / 4140
Material properties and dimensions
- Standard
- 42CrMo4 (ISO 683-2) / SAE 4140 (SAE J404)
- Supply / Processing
- Black / peeled / machined
- Delivery Condition
- QT or thread-ready condition
- Possible applications
- Candidate high-strength material route for ties, shafts and pins.
- Application Limits
- Protection and fatigue acceptance are project-specific; cross-standard substitutions require verification.
35CrMo
Material properties and dimensions
- Standard
- 35CrMo; verify any proposed SAE 4135 or 34CrMo4 substitution
- Supply / Processing
- Hot rolled / forged / machined
- Delivery Condition
- QT or fastener bar route
- Possible applications
- Candidate route for threaded and fastener-related components.
- Application Limits
- Final fastener performance depends on the complete assembly specification.
40Cr
Material properties and dimensions
- Standard
- 40Cr; verify any proposed 41Cr4 or SCr440 substitution
- Supply / Processing
- Hot rolled / forged / machined
- Delivery Condition
- Heat-treated or machined blank
- Possible applications
- Candidate material route for general marine machinery parts.
- Application Limits
- Suitability depends on loads, environment, section size and target properties.
Specifications to Confirm
Marine Tie Bars
Match the tie rod to the waterline
We supply bar material and processed ends for purchaser-designed quay walls, jetties and riverbank ties. Permanent and cyclic loads, impact, fatigue spectrum and connection stiffness define the supply requirements.
- Supply
- Heat-treated bar, threaded and processed ends, and protective packing.
- Exposure
- Confirm thread sealing, protection, maintenance and cathodic interfaces for atmospheric, splash, immersed and buried zones.
- Inputs
- Design tie force, fatigue spectrum, accidental loads, connection stiffness and adjustment range.
Anchorage Plates & Nuts
Confirm the bearing face and thread together
Anchorage plates and nuts transfer tie-bar forces through their bearing interfaces. We supply the parts to the bar-end drawing, with plate geometry, holes, threads, bearing surfaces, processing and inspection defined for the order.
- Products
- Marine tie bar anchorage plates and nuts; concept images do not replace finished-component drawings.
- Interfaces
- Shape, thickness, hole diameter, thread and engagement length, bearing face and installation space.
- Inputs
- Material standard, accessory quantities, protection system, dimensional acceptance and delivery requirements.
Anchor & Threaded Rods
Connect the embedded and exposed load path
We supply bar stock, prepared threaded material and project-specified high-strength anchor bolts for marine and waterfront anchorage. Effective thread engagement, transition geometry, protection continuity and the embedded-to-exposed boundary must be reviewed together.
- Supply
- Specified grade, cut lengths, thread preparation and protection where required.
- Exposure
- Confirm atmospheric, splash, immersed or buried zones; protection must suit actual marine service.
- Inputs
- Drawings, design life, maintenance requirements, anchorage geometry and cathodic-protection interfaces.
Connection Components
Retain thread fit and adjustment after protection
Couplers join tie bars, clevises form pinned connections and turnbuckles adjust assembly length. We supply these parts to the drawing, with thread form, handedness, minimum engagement, articulation, locking, coating thickness and assembly requirements defined together.
- Supply
- Machining, thread compatibility review and surface-finish inspection.
- Connections
- Effective engagement, left- and right-hand threads, adjustment allowance, articulation and locking.
- Protection
- Coating or galvanising route, hydrogen-related risks, post-process controls and assembly condition.
Marine Machinery Blanks
Specify blanks for impact and cyclic service
We supply alloy-steel blanks for connections in heavy marine and offshore machinery. Section size, minimum temperature, impact requirements, fatigue history, NDT and corrosion allowance determine material and delivery condition.
- Supply
- QT condition, machining allowance and UT when specified.
- Service
- Combined permanent and cyclic actions, impact and accidental loads, connection stiffness and adjustment requirements.
- Inputs
- Drawings, section size, minimum temperature, toughness targets, NDT scope and corrosion allowance.
Post-Tensioning Bars
Post-tensioning supply for marine structures
For post-tensioning in offshore and nearshore structures, we supply steel bars and accessories to the project design. Confirm bar form, end anchorage, material requirements and the supply list; finished performance and stressing parameters are defined by the project.
- Bar types
- Smooth, fully threaded and cold-rolled fully threaded steel bar routes.
- Specification
- The cold-rolled route requires separate confirmation of strength class, finished specification and project suitability.
- Enquiry
- Application drawings, diameter, length, threads, anchorage accessories, protection and project testing requirements.
Smooth PT Bars
- Bar & Thread Form
- Smooth round bar with threads at the ends; finished geometry follows the approved drawing.
- Accessories
- Couplers, nuts, bearing plates and washers matched to the end connections.
- Specifications to Confirm
- Material standard, diameter, overall length, end threads, strength requirements, surface protection and inspection documents.
Fully Threaded PT Bars
- Bar & Thread Form
- Continuous threads along the bar; thread form, pitch and connection positions are confirmed for the project.
- Accessories
- Compatible couplers, nuts, bearing plates and spherical washers.
- Specifications to Confirm
- Diameter, thread form, cut length, mechanical properties, coupler fit and test requirements.
Cold-Rolled PT Bars
- Bar & Thread Form
- A fully threaded steel bar route; threads and finished dimensions follow the confirmed technical specification.
- Accessories
- Couplers, nuts and anchorage accessories matched to the bar threads and project requirements.
- Specifications to Confirm
- Bar standard, strength class, diameter, pitch, length and acceptance basis must be confirmed with the enquiry.
ACCESSORIES
Marine connection and anchorage components
Connection, anchorage, installation and protection components matched to your project list.
Confirm tie bars, anchorage and connection components against the same interface requirements.
Marine Tie Bar Plates & Nuts
ANCHORAGE COMPONENTS
Confirm bearing faces, hole diameter, plate thickness and threads against the bar-end drawings.
Couplers
THREADED CONNECTIONS
Confirm threads, engagement length and fit after protection.
03Clevises
ARTICULATED CONNECTIONS
Confirm articulation geometry, mating parts and installation requirements against the drawings.
Turnbuckles
LENGTH ADJUSTMENT
Confirm thread handedness, usable adjustment range and locking requirements.
For project-specified post-tensioning applications, matched to the selected bar specification.
PT Bar Couplers
BAR CONNECTION
Connect adjacent bars; confirm thread compatibility and connection length.
PT Bar Nuts
THREADED ANCHORAGE
Match the bar-end threads and anchorage requirements.
Bearing Plates
ANCHORAGE BEARING
Confirm shape, hole diameter, thickness and material against drawings.
Washers / Spherical Washers
BEARING INTERFACES
Select to suit the fit and contact surfaces at the anchorage.
Spherical Hex Nuts
SPHERICAL BEARING
Confirm the threads and spherical bearing interface.
Anchorage Zone Helical Reinforcement
LOCAL REINFORCEMENT
Confirm diameter, pitch and geometry against the project design.
PT Bar Pocket Formers
ANCHORAGE RECESSES
Form space around the anchorage end; confirm dimensions against drawings.
Pocket Former Spacer Nuts
FORMER POSITIONING
Match the former position and end installation requirements.
Duct Collars / Trumpets
DUCT & GROUT INTERFACES
Confirm the duct, anchorage end and grouting interfaces.
Fibre-Reinforced Nylon End Caps
END PROTECTION
Match the end geometry, connection and protection requirements.
Confirm grouting and protective materials against the project protection system.
Cement Grout
GROUTING MATERIAL
Confirm material properties, installation suitability and acceptance requirements against the project specification.
Wax, Heat-Shrink Sleeves & Corrosion Protection
PROTECTIVE MATERIALS
Confirm material and interface compatibility with the project exposure and protection system.
From Connection to Marine Protection
INSTALLATION & PROTECTION
Align the supply list with exposure zones and installation interfaces, matching materials, connections and protection.
Connection & Adjustment
For couplers, clevises and turnbuckles, confirm thread standard, handedness, minimum engagement, articulation and locking against drawings. Retain assembly and adjustment allowance after coating.
Add to Project EnquiryAnchorage & Ends
For plates, nuts, anchor rods and threaded rods, confirm bearing faces, end transitions, embedment and exposed boundaries against the design. Review interfaces and accessory quantities together.
Add to Project EnquiryMarine Protection
Distinguish atmospheric, splash, immersed and buried zones. Confirm design life, coating or galvanising, thread sealing, cathodic interfaces, maintenance and protective packing.
Add to Project Enquiry- Project Drawings
- Product Selection
- Accessory List
- Inspection Review
- Packing & Delivery
Component supply and
engineering responsibilities
engineering responsibilities
SUPPLY SCOPE
For quay-wall ties, marine anchorage, connection and adjustment components, and heavy machinery interfaces, JOTAIN confirms materials, processed components and accessories against the purchaser’s drawings and specifications.
- Our scope
- Product lists, materials and dimensions, threads and end processing, protection, inspection plans, marking and delivery records.
- Engineering team
- System design, design loads and fatigue assessment, exposure and design life, protection and cathodic interfaces, anchorage layout and final acceptance requirements.
Match the Material to the Conditions
ENGINEERING REQUIREMENTS
Loads, marine exposure, connection geometry and protection interfaces define the material and processing route. Project drawings and acceptance criteria govern the requirements.
Loads
Permanent, cyclic, impact and fatigue demand
Exposure
Atmospheric, splash, immersed or buried
Connections
Threads, couplers, clevises and adjustment
Protection
Coating, galvanising, cathodic interfaces and packing
Product specifications
Marine Conditions & Interfaces
Confirm project inputs from loading through to protection.
Loading & Fatigue
Permanent and cyclic actions together
Material routes for quay-wall ties and marine machinery components must reflect combined actions. Design tie force, fatigue spectrum, impact and accidental loads, connection stiffness and adjustment needs define the supply requirements.
- Inputs
- Design loads, fatigue background, impact and accidental conditions, minimum service temperature and acceptance criteria.
- Supply review
- Confirm delivery condition against section size, target properties, machining allowance and specified testing.
Exposure & Design Life
Protection for the actual marine zone
Atmospheric, splash, immersed and buried zones need different protection, thread sealing, packing and maintenance. Review the embedded-to-exposed boundary together with anchorage and coating continuity.
- Inputs
- Actual exposure zone, design life, maintenance and inspection arrangements.
- Interfaces
- Cathodic-protection interfaces and compatibility with accessories and the protection system.
Threads & Surface Finish
Review strength, protection and assembly together
Thread standard, handedness, minimum engagement, articulation, locking and coating thickness must remain compatible after protection. Strength targets, protection and installation requirements need a coordinated specification.
- Inputs
- Thread standard, engagement length, coating or galvanising route, connection geometry and adjustment allowance.
- Process
- Confirm hydrogen risks and post-process controls for the material, strength and protection process.
From Approved Material to Delivery
PROCESSING & DELIVERY
A process route for steel bars and machined components. The exact steps depend on the product and order.
- 01
Approved Bar Route
- 02
Heat Treatment
- 03
Machining or Peeling
- 04
Threads & Ends
- 05
Specified Protection
- 06
Inspection & Packing
Confirm Inspection
Before Production.
Before Production.
INSPECTION & RECORDS
Before production, agree the test scope, sampling locations, inspection stages, acceptance criteria, marking and delivery-release records against the project specification.
Inspection items
Material & Integrity
Confirm heat traceability, mechanical testing and UT where specified. Define test positions, scope and acceptance criteria before production.
Connection Geometry
Check thread dimensions, coupler engagement, bar length and straightness, and the assembly interfaces of ends and accessories.
Protection & Packing
Retain surface-treatment records, check coating thickness where required, and confirm thread protection, packing and delivery release records.
Standards for Your Order
REFERENCE & ORDER BASIS
Use the approved drawings, project specification, inspection plan and stated editions of the standards.
DNV-RP-C203
Reference background for fatigue assessment of offshore steel structures where specified by the project.
Open ReferenceISO 12944-8
Reference background for developing protective paint specifications for the relevant exposure and durability requirements.
Open ReferenceDiscuss your project
Send your requirements directly to JOTAIN. We will reply to your email.