Stainless-steel process piping at an industrial plant

Mechanical & Piping Products

Engineered Components for Industrial Piping Systems

Movement control · Load transfer · Pipeline connections · Maintenance isolation

Explore mechanical and piping products for movement control, load transfer, pipeline connections and maintenance isolation.

Dar Almahireen Technical Services L.L.C. supports project-specific enquiries for expansion joints, bearing and sliding plates, split tees and line-stopping equipment, with configurations selected against the required operating conditions and technical documentation.

Explore the Range

Our Product Range

4 Product Lines

Expansion Bellows & Joints

Piping flexibility and movement control.

Bearing & Sliding Plates

Load transfer and controlled movement.

Split Tees

Engineered pipeline branch connections.

Line-Stopping Equipment

Temporary pipeline isolation systems.

01 / Expansion Bellows & Joints · Piping Flexibility

Expansion Bellows & Joints

Expansion joints accommodate specified movement in piping systems caused by thermal expansion, equipment movement or vibration. Metallic and rubber designs offer different movement, pressure, temperature and media capabilities.

Product options: Metallic expansion bellows, rubber expansion joints and project-specific assemblies.

Applications: Process piping, marine utility systems, pump connections and industrial plants.

Typical technical specifications

Parameter	Metallic bellows	Rubber expansion joints
Nominal size	DN 50–3,000 in a published oil-and-gas design range	DN 13–3,000 across a published product family
Pressure capability	−1 to 215 barg across the referenced design range	Approx. 2.1–24.8 bar across different sizes and constructions
Temperature capability	−165°C to +700°C across the referenced design range	Material-dependent; selected constructions up to 205°C
Construction	Stainless steel or specified corrosion-resistant alloy	Reinforced elastomer with selected liner and cover
Movement	Axial, lateral and angular; design-specific	Axial, lateral and angular; model-specific
Connections	Flanged, weld-end or project-specified	Flanged configurations
Design references	EJMA, EN 14917 and applicable piping codes	Applicable project and manufacturer requirements

02 / Bearing & Sliding Plates · Load Transfer & Movement

Bearing & Sliding Plates

Bearing and sliding assemblies transfer loads while allowing controlled movement at suitable structural and equipment supports. PTFE-based sliding surfaces are commonly paired with compatible stainless-steel mating plates.

Product options: PTFE sliding plates, stainless-steel mating plates and engineered bearing assemblies.

Applications: Pipe supports, equipment supports and project-specific structural connections.

Technical reference — PTFE sliding bearings

Parameter	Reference value / requirement
Sliding arrangement	PTFE with compatible mating surface
Structural-bearing PTFE temperature reference	−35°C to +48°C in the referenced bearing system
Comparative PTFE compressive-strength reference	Approximately 90 MPa in the cited structural-bearing material comparison
Comparative design friction	Approximately 3% in the cited bearing comparison
Plate dimensions	Sized to project load and required movement
Sliding travel	Determined by the support design
Steel backing and corrosion protection	Project-specified

03 / Split Tees · Pipeline Connections

Split Tees

Split tees are engineered fittings assembled around a pipeline to provide a branch connection or an interface for a compatible intervention system. Their design must account for the existing pipe, operating conditions and proposed branch arrangement.

Product options: Full-branch and reduced-branch split tees, subject to the approved design.

Applications: Pipeline modifications, branch connections and compatible hot-tapping arrangements.

Typical technical specifications

Parameter	Published product-family range
Main-pipe size	2–108 in. across a published tapping-fitting family
Branch configuration	Full branch / Reduced branch
Flange classes	ASME Class 150, 300, 600, 900, 1500 and 2500
Temperature capability	−45°C to +649°C across different engineered configurations
Typical fitting material	Carbon steel; other materials by design
Pressure capability	Based on the selected fitting, flange class and design code
Design references	Applicable ASME B31 piping code and project specification

04 / Line-Stopping Equipment · Pipeline Isolation

Line-Stopping Equipment

Line-stopping systems provide temporary isolation of a compatible pipeline section for planned maintenance or modification. A complete arrangement may include an engineered fitting, isolation valve, plugging machine, sealing head and bypass provisions.

Product options: Plugging heads, insertion equipment and compatible line-stopping components, subject to system design.

Applications: Approved pipeline maintenance, repair and modification projects.

Typical technical specifications

Parameter	Published system reference
Standard plugging-machine size	4 in. and larger
Double-block-and-bleed system size	4–36 in.
Double-block-and-bleed pressure capability	Up to 102 bar
Maximum operating temperature	82°C for the referenced plugging systems
Fitting interface	System-compatible engineered fitting
Isolation arrangement	Single plugging head or double-block-and-bleed configuration
Sealing element	Selected for pipe ID, pressure and fluid compatibility

Industrial Applications

Supporting Industrial Piping Requirements

Oil & Gas
Petrochemical Plants
Marine & Offshore
Power Generation
Industrial Utilities
Pipeline Maintenance

Request a Quote

Mechanical & Piping Product Enquiries

Share your drawings, product specifications, operating conditions, quantity and delivery location with Dar Almahireen Technical Services L.L.C. We can review your requirement and discuss suitable product configurations and supply options.

Contact Dar Almahireen Schedule a Meeting

Explore other products