Product Overview
Hydraulic Weld Fitting provides a permanent hydraulic connection point on tanks, manifolds, pipes, and fabricated steel structures. It is widely used where threaded ports cannot be machined directly into the base component or where welded installation offers a more economical manufacturing solution.
Product Features
Reduced Machining Requirements
Creates hydraulic ports through welding rather than machining large threaded holes, reducing fabrication operations on tanks and structural components.
Strong Weld Support
Available with body wall thicknesses typically ranging from 6–12 mm, providing sufficient material for weld penetration and structural reinforcement around the connection area.
Reliable Connection Stability
The welded installation eliminates thread movement between the fitting body and mounting surface, helping maintain connection stability in vibration-prone equipment.
Suitable for Fabricated Hydraulic Components
Commonly used on hydraulic reservoirs, manifolds, return-line systems, and custom steel assemblies where welded ports are preferred over machined ports.
Manufacturing & Quality Control
Threaded connections and sealing surfaces are machined on CNC equipment to maintain dimensional consistency before welding installation.
Weld-contact areas are cleaned and machined to remove contaminants that may affect weld quality and penetration.
GO/NO-GO gauges are used to verify thread dimensions according to applicable ISO, SAE, DIN, and JIS standards.
Plating thickness and coating appearance are inspected to ensure corrosion-protection performance requirements are met.
100% visual inspection is conducted on weld surfaces, threaded sections, sealing areas, and surface finish before packaging.
Available Configurations
| Item | Available Options |
| Thread Standard | BSPP, BSPT, NPT, JIC 37°, SAE ORB, Metric |
| Thread Size | 1/8", 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" |
| Material | Carbon Steel, Stainless Steel 304, Stainless Steel 316 |
| Weld Type | Socket Weld, Butt Weld |
| Connection Gender | Male Thread, Female Thread |
| Body Shape | Straight, Elbow |
| Surface Treatment | Zinc Plated, Zinc-Nickel Plated, Passivated Stainless Steel |
| Wall Thickness | Standard Duty, Heavy Duty |
| Marking | Part Number Marking, Batch Number Marking, Customer Logo Marking |
| Packaging | Bulk Packing, Individual Bag Packing, Carton Packing |
FAQ
Q: Why are weld fittings commonly used on hydraulic tanks?
A: They allow connection ports to be added without machining large threaded openings into the tank body, simplifying fabrication and reducing manufacturing costs.
Q: What is the difference between a weld fitting and a bulkhead fitting?
A: A weld fitting is permanently attached through welding, while a bulkhead fitting is mechanically secured through a panel using locknuts and sealing components.
Q: Which welding methods are typically used?
A: MIG, TIG, and robotic welding processes are commonly used depending on material type, production volume, and fabrication requirements.
Q: How can weld quality affect hydraulic performance?
A: Insufficient weld penetration or contamination can create leak paths and reduce structural integrity around the connection point.
Q: What information is required for product selection?
A: Connection type, thread specification, pipe or tank wall thickness, operating pressure, material requirement, and installation method should be confirmed before selection.
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