JIS F 3410 Type D Forging Steel Oval Lifting Eyeplate Ship Mooring Equipment

Product Specification

Forged Steel Oval Eyeplate JIS F 3410 Type D | Ship Deck Connection and Lifting Point

Product Overview

The JIS F 3410 Type D forged steel oval eyeplate is a welded shipboard connection fitting used for fixing rope terminals, shackles, pulley blocks and other attachment components to ship structures. It is normally installed on deck or a specified ship structure, where the oval eye opening, forged transition area and welded base must be matched with the load direction, supporting structure, welding details and inspection requirement.

For website selection, the supplied Type D table covers nominal numbers 0.5 to 15 with permissible loads from 4.9 kN to 147 kN. Broader catalogue ranges such as 4 to 500 kN should be confirmed against the official standard table, project drawing and certificate scope before publishing or quotation. This page uses “permissible load” as the governing load term and does not convert it into SWL, MBL or test load.

Quick Specifications

• Product type: forged steel oval eyeplate → welded ship deck attachment point for rope terminal, shackle and pulley connection.
• Standard and type: JIS F 3410-1999 Type D → used when the vessel drawing or owner specification calls for the Type D oval eyeplate arrangement.
• Supplied size range: nominal No. 0.5 to 15 → suitable for webpage selection based on the provided Type D parameter table.
• Permissible load in supplied table: 4.9 to 147 kN → must be used as permissible load only, not mixed with SWL, MBL or breaking load.
• Main dimensions provided: d, L, H, R, T, A, B, h and welding leg f1/f2/f3 → key data for drawing match, installation space and weld review.
• Manufacturing focus: forged / machined transition, smooth section change and visible crack / flaking control → important for stress concentration and inspection acceptance.
• Surface treatment: Sa 2.5 blasting + one layer epoxy shop primer → final coating should follow vessel paint specification or customer requirement.
• Certificate scope: maker certificate, material certificate, third-party inspection or class approval can be arranged according to order and project requirement.

Main Technical Parameters

Selection & Inquiry Guide

• Step 1: Confirm JIS F 3410 Type D and nominal number according to vessel drawing, permissible load requirement and intended connection arrangement.
• Step 2: Confirm load direction, load angle, shackle or pulley arrangement, and whether the fitting is used for mooring support, deck connection, cargo handling support or lifting-related work.
• Step 3: Confirm installation structure, deck / hull reinforcement, welding leg size f1 / f2 / f3, welding procedure and available installation space before production.
• Step 4: Confirm material requirement: forged mild steel, C-Mn steel, stainless steel or project-specified equivalent material with suitable weldability.
• Step 5: Confirm surface treatment: Sa 2.5 blasting, epoxy shop primer, final paint system, galvanizing or stainless steel finishing when specified.
• Step 6: Confirm certificate scope before quotation: maker certificate, material certificate, third-party inspection, class certificate, design approval or witness test requirement.
• Step 7: Provide quantity, installation drawing, loading case, vessel type, classification society requirement, delivery destination and required delivery time.

Structure

Forged oval eye body | Oval shackle / connection opening | Smooth transition radius | Welded base area | Mounting dimensions A / B / h | Welding leg f1 / f2 / f3 | Shop primer or specified surface treatment

Forging, Welding & Engineering Advantages

• Forged steel construction is suitable for shipboard eyeplate applications where section transition, load path and weld interface quality are more important than decorative appearance.
• The oval eye opening provides a defined connection point for shackles, rope terminals or pulley blocks, while the final selection should still follow the vessel drawing and approved loading case.
• Smooth radius and section-change control help reduce local stress concentration around the eye and base transition area.
• The finished surface should be free from visible cracks and flaking; magnetic particle testing, dye penetrant testing or third-party inspection can be arranged when required by the project.
• Welding leg dimensions f1 / f2 / f3 are included in the Type D table, but actual weld procedure, weld length, deck reinforcement and post-weld inspection must follow the shipyard or class-approved drawing.
• For lifting-related or cargo-handling use, permissible load, load direction, supporting structure, shackle compatibility and class approval should be checked as a complete system, not by the eyeplate size alone.
• FEA review, load test and design approval can be discussed according to project requirement, especially for non-standard installation, replacement work or higher inspection scope.

Custom Attributes

• Standard: JIS F 3410-1999 → reference standard for ship oval eyeplate dimensions, material basis and type designation.
• Type: Type D → oval eyeplate configuration with base dimensions and three welding leg values shown in the supplied table.
• Nominal No.: 0.5 / 1 / 2 / 3 / 5 / 7.5 / 10 / 15 → select by permissible load, connection component and vessel drawing.
• Permissible Load: 4.9 to 147 kN in this datasheet → use the original permissible load term and do not convert it into SWL or breaking load.
• Material: forged mild steel, C-Mn steel or stainless steel → final grade, heat treatment and material certificate should be confirmed before order.
• Surface Treatment: Sa 2.5 blasting + epoxy shop primer → final coating follows vessel paint specification or customer requirement.
• Inspection: visual check, dimensional check and optional MT / PT / third-party inspection → inspection scope depends on project requirement and certificate level.
• Certificate Requirement: available according to order scope → class inspection, type approval or design approval should be confirmed before quotation.

How It Works

Connection component is aligned with the oval eye → Load is transferred through the forged eye body → Smooth transition area distributes stress toward the welded base → Welded structure transfers load into the reinforced ship structure → Inspection and coating are completed according to project requirement

Applications

Ship deck connection points | Rope terminal fixing | Shackle connection | Pulley block attachment | Cargo handling support points | Mooring and rigging auxiliary arrangements | Deck equipment replacement | Newbuilding and repair projects

Certifications & Advantages

Certificates can be arranged according to project requirement, inspection scope, material traceability, load test requirement and class society approval procedure.

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate.

Drawing & Photos

FAQ

Q1: Is JIS F 3410 Type D the same as a general lifting pad eye?

A1: No. It should be treated as a ship oval eyeplate selected according to JIS F 3410 Type D, permissible load, load direction, weld detail and supporting structure. If it is used in lifting-related work, the complete loading case, shackle compatibility, welding design and class approval should be separately verified.

Q2: How should the correct Type D size be selected?

A2: Select by permissible load, nominal number, eye opening, shackle or pulley arrangement, weld leg size, installation structure and vessel drawing. Do not select only by the shackle size or only by the eye opening diameter.

Q3: What information is needed before quotation?

A3: Confirm standard, Type D, nominal number, permissible load, material grade, surface treatment, quantity, certificate requirement, load direction, installation drawing, delivery destination and required delivery time.