METAL EXPANSION JOINTS

Erith as a highly professional engineering enterprise involved in design & manufacturing of Expansion Joints / Bellows under the brand “ERECOSHIELD”.   

Erecoshield Expansion Joint are designed, manufactured and supplied as per EJMA, ASME B31.1, ASME B31.3, and ASME Section 8. Erith have manufacturing facilities in Europe and India, we offer world class design and quality while maintaining the industrial safety factors, offering Size range from DN 50mm to 5000mm for any types of expansion joints. 

  • ABOUT
  • FEATURES AND BENEFITS
  • APPLICATIONS
  • MATERIALS USED
  • INSPECTION & TESTING

A Single Metal Expansion joint is the simplest type of metal expansion joint with single bellow construction welded or flanged to end fittings. The single bellows can absorb any combination of basic movements in pipeline where there are proper anchors and guides

Economical, with quality materials and hydroformed or punchformed construction

Available with carbon steel or 304SS or 316SS any class end flanges or weld ends

Available with options including tie rods, liners, and covers

Temperature up to 1200°C

Pressure up to 70 Bars
Diameter’s dimensions from 15 to 5000 mm

Refining technology

Oil and gas industry

Power plant technology

Pulp and paper industry

Shipbuilding

Water and waste water technology

The choice of metals to be used in manufacturing the bellows, being the basic component of the Expansion Joint, is made taking the following criteria into account: 

Temperature resistance, Resistance to corrosion, Forming capacity, Mechanical characteristics, Resistance to fatigue, Flexibility when in use.

Bellows are manufactured from the following materials with other materials are available upon request. 

Stainless Steel: Type 300 Austentic Series, Duplex, Super Duplex Stainless Steel 

Nickel Alloy: 200, 400, 600, 625, 800, 825 

Hastelloy (C22 & C276) 

Titanium & Monel Grades 

Erith is committed to offer quality products and services with one of the most comprehensive Quality Assurance Programs in the industry with the following tests. 

X-ray  

Isotope Radiography 

Dye Penetrant testing 

Ultrasonic testing 

Helium Leak Detection 

Positive Material Identification (PMI) 

Hydro/Pneumatic Testing 

Cycle Testing 

Material Testing 

  • ABOUT
  • FEATURES AND BENEFITS
  • APPLICATIONS
  • MATERIALS USED
  • INSPECTION & TESTING

A Universal Double Metal Expansion Joint consists of two bellows connected by a center tube, welded or flanges to pipe ends. The universal arrangement allows greater axial, lateral and angular movements than a single expansion joint. Increasing the center spool length produces increased movement capability. Like the single expansion joint, the double metal expansion joint is used when proper anchors and guides are present.

Economical, with quality materials and hydroformed or punchformed construction

Available with carbon steel or 304SS or 316SS any class end flanges or weld ends

Available with options including tie rods, liners, and covers

Temperature up to 1200°C

Pressure up to 70 Bars
Diameter’s dimensions from 15 to 5000 mm

Refining technology

Oil and gas industry

Power plant technology

Pulp and paper industry

Shipbuilding

Water and waste water technology

The choice of metals to be used in manufacturing the bellows, being the basic component of the Expansion Joint, is made taking the following criteria into account: 

Temperature resistance, Resistance to corrosion, Forming capacity, Mechanical characteristics, Resistance to fatigue, Flexibility when in use.

Bellows are manufactured from the following materials with other materials are available upon request. 

Stainless Steel: Type 300 Austentic Series, Duplex, Super Duplex Stainless Steel 

Nickel Alloy: 200, 400, 600, 625, 800, 825 

Hastelloy (C22 & C276) 

Titanium & Monel Grades 

Erith is committed to offer quality products and services with one of the most comprehensive Quality Assurance Programs in the industry with the following tests. 

X-ray  

Isotope Radiography 

Dye Penetrant testing 

Ultrasonic testing 

Helium Leak Detection 

Positive Material Identification (PMI) 

Hydro/Pneumatic Testing 

Cycle Testing 

Material Testing 

  • ABOUT
  • FEATURES AND BENEFITS
  • APPLICATIONS
  • MATERIALS USED
  • INSPECTION & TESTING

A Tied Double Metal Expansion Joint consists of two bellows connected by a center tube piece with tie rods. The tie rods are connected to the restraining flanges through spherical washers which allow for movement between the tie rods and the flanges during operation. This type of expansion joint can accommodate large movements in the lateral plane and can operate in any direction

Tied custom metal expansion joints for general pressure applications.

Designed for, and cover the mid temperature and pressure range for general process equipment.

Mainly for lateral movements.

Tied metal expansion joints retain pressure thrust developed by internal pressure, through the use of hardware.

Available with options including tie rods, liners, and covers

Temperature up to 1200°C

Pressure up to 70 Bars
Diameter’s dimensions from 15 to 5000 mm

  •  

Refining technology

Oil and gas industry

Power plant technology

Pulp and paper industry

Shipbuilding

Water and waste water technology

The choice of metals to be used in manufacturing the bellows, being the basic component of the Expansion Joint, is made taking the following criteria into account: 

Temperature resistance, Resistance to corrosion, Forming capacity, Mechanical characteristics, Resistance to fatigue, Flexibility when in use.

Bellows are manufactured from the following materials with other materials are available upon request. 

Stainless Steel: Type 300 Austentic Series, Duplex, Super Duplex Stainless Steel 

Nickel Alloy: 200, 400, 600, 625, 800, 825 

Hastelloy (C22 & C276) 

Titanium & Monel Grades 

Erith is committed to offer quality products and services with one of the most comprehensive Quality Assurance Programs in the industry with the following tests. 

X-ray  

Isotope Radiography 

Dye Penetrant testing 

Ultrasonic testing 

Helium Leak Detection 

Positive Material Identification (PMI) 

Hydro/Pneumatic Testing 

Cycle Testing 

Material Testing 

  • ABOUT
  • FEATURES AND BENEFITS
  • APPLICATIONS
  • MATERIALS USED
  • INSPECTION & TESTING
A Gimbal Metal Expansion Joint is designed to absorb pressure thrust and angular rotation in any plane by two pairs of hinges connected to a common floating Gimbal ring. The Gimbal ring, hinges and pins must be designed to restrain the thrust of the expansion joint due to internal pressure and extraneous forces.

Designed for, and cover the mid temperature and pressure range for general process equipment.

Advantage of absorbing pressure thrust, supporting the dead weight of the system, transmitting loads through the gimbaled structure, preventing torsion & reduce forces on system.

Applied to complex piping system were proper anchoring & guiding may not be feasible.

These joints are capable of absorbing angular motion in all planes.

Available with options including tie rods, liners, and covers

Temperature up to 1200°C

Pressure up to 70 Bars
Diameter’s dimensions from 15 to 5000 mm

  • Refining technology
  • Oil and gas industry
  • Power plant technology
  • Pulp and paper industry
  • Shipbuilding
  • Water and waste water technology
  • Gas and steam turbines
  • Conventional boilers
  • Coal feed transport systems
  • Ash transport systems
  • Water cooling systems
  • Air and steam transport lines
  • HSRG

The choice of metals to be used in manufacturing the bellows, being the basic component of the Expansion Joint, is made taking the following criteria into account: 

Temperature resistance, Resistance to corrosion, Forming capacity, Mechanical characteristics, Resistance to fatigue, Flexibility when in use.

Bellows are manufactured from the following materials with other materials are available upon request. 

Stainless Steel: Type 300 Austentic Series, Duplex, Super Duplex Stainless Steel 

Nickel Alloy: 200, 400, 600, 625, 800, 825 

Hastelloy (C22 & C276) 

Titanium & Monel Grades 

Erith is committed to offer quality products and services with one of the most comprehensive Quality Assurance Programs in the industry with the following tests. 

X-ray  

Isotope Radiography 

Dye Penetrant testing 

Ultrasonic testing 

Helium Leak Detection 

Positive Material Identification (PMI) 

Hydro/Pneumatic Testing 

Cycle Testing 

Material Testing 

  • ABOUT
  • FEATURES AND BENEFITS
  • APPLICATIONS
  • MATERIALS USED
  • INSPECTION & TESTING

A Hinged Metal Expansion Joint contains one bellow and is designed to absorb angular rotation in one plane only by one pair of hinges. The hinges and hinge pins must be designed to restrain the thrust of the expansion joint due to internal pressure and extraneous forces. Hinged expansion joint should be used in sets of two or three bonded to absorb combinations of movements in piping system.

  • Designed for, and cover the mid temperature and pressure range for general process equipment.
  • Mainly for angular movements.
  • Tied metal expansion joints retain pressure thrust developed by internal pressure, through the use of hardware.
  • Available with options including tie rods, liners, and covers
  • Temperature up to 1200°C
  • Pressure up to 70 Bars
  • Diameter’s dimensions from 15 to 5000 mm

Refining technology

Oil and gas industry

Power plant technology

Pulp and paper industry

Shipbuilding

Water and waste water technology

The choice of metals to be used in manufacturing the bellows, being the basic component of the Expansion Joint, is made taking the following criteria into account: 

Temperature resistance, Resistance to corrosion, Forming capacity, Mechanical characteristics, Resistance to fatigue, Flexibility when in use.

Bellows are manufactured from the following materials with other materials are available upon request. 

Stainless Steel: Type 300 Austentic Series, Duplex, Super Duplex Stainless Steel 

Nickel Alloy: 200, 400, 600, 625, 800, 825 

Hastelloy (C22 & C276) 

Titanium & Monel Grades 

Erith is committed to offer quality products and services with one of the most comprehensive Quality Assurance Programs in the industry with the following tests. 

X-ray  

Isotope Radiography 

Dye Penetrant testing 

Ultrasonic testing 

Helium Leak Detection 

Positive Material Identification (PMI) 

Hydro/Pneumatic Testing 

Cycle Testing 

Material Testing 

  • ABOUT
  • FEATURES AND BENEFITS
  • APPLICATIONS
  • MATERIALS USED
  • INSPECTION & TESTING

A Pressure Balanced Metal Expansion Joint is designed to absorb axial movement and/or lateral deflection while pressure loading upon piping or equipment is considered excessive or objectionable. Pressure balanced metal expansion joint restrains the pressure thrust through tie devices, where two bellows are used in the flow end and a single bellow in the balancing end. The balance bellow will be subjected only to axial movement if the tie rods are properly designed to rotate or pivot at their attachment points

  • Elbow type pressure balanced expansion joints.
  • Pressure thrust eliminated by means of force balancing design principle.
  • Designed to apply minimum forces on connecting, load sensitive equipment.
  • Mainly for axial and lateral movements.
  • Minimum load transferred onto connecting equipment – force balancing principle not affected by system pressure fluctuations.
  • Highly customizable design: Bellows geometry, Material options and combinations.
  • Multiply bellows with low spring rate and high cycle life
  • Temperature up to 550°C
  • Pressure up to 70 Bars
    Diameter’s dimensions from 100 to 2000 mm
  • Oil and gas industry
  • Refining technology
  • Power plant technology
  • Pulp and paper industry
  • Water and waste water technology
  • Metal production and processing
  • Shipbuilding
  • Steam turbines
  • Water cooling systems
  • Steam transport lines
  • Compressor / pumping stations
  • Lubrication systems

Storage tanks

The choice of metals to be used in manufacturing the bellows, being the basic component of the Expansion Joint, is made taking the following criteria into account: 

Temperature resistance, Resistance to corrosion, Forming capacity, Mechanical characteristics, Resistance to fatigue, Flexibility when in use.

Bellows are manufactured from the following materials with other materials are available upon request. 

Stainless Steel: Type 300 Austentic Series, Duplex, Super Duplex Stainless Steel 

Nickel Alloy: 200, 400, 600, 625, 800, 825 

Hastelloy (C22 & C276) 

Titanium & Monel Grades 

Erith is committed to offer quality products and services with one of the most comprehensive Quality Assurance Programs in the industry with the following tests. 

X-ray  

Isotope Radiography 

Dye Penetrant testing 

Ultrasonic testing 

Helium Leak Detection 

Positive Material Identification (PMI) 

Hydro/Pneumatic Testing 

Cycle Testing 

Material Testing 

  • ABOUT
  • FEATURES AND BENEFITS
  • APPLICATIONS
  • MATERIALS USED
  • INSPECTION & TESTING

The External Pressurized Metal Expansion Joint is designed that the pressure is acting to the bellows externally while the inside of the bellows is at atmospheric pressure. It has many convolutions to allow a large amount of axial movement. But under external pressure the bellows will retain its shape completely stable. Besides, external pressurized bellow is protected from external damage by a heavy wall shroud and is isolated from flow impingement by an internal sleeve.

  • Untied metal expansion joints mainly for district heating applications.
  • External shroud with torsion protection, for district heating.
  • Can be installed in series.
  • Designed for large axial movements.
  • No significant pressure drop - reduced need for pumps and general power consumption for moving media, compared to pipe loops.
  • Less space required around the joint - compared to pipe loops.
  • Less supporting structure required – compared to pipe loops.
  • Lower erosion rate (for abrasive media lines – compared to pipe loops with elbows).
  • Multiply bellows with low spring rate and high cycle life.
  • Temperature up to 550°C

Pressure up to 50 Bars
Diameter’s dimensions from 100 to 2000 mm

    • Refining technology
    • Oil and gas industry
    • Power plant technology
    • Pulp and paper industry
    • Shipbuilding
    • Water and waste water technology
    • Water cooling systems
    • Air and steam transport lines

The choice of metals to be used in manufacturing the bellows, being the basic component of the Expansion Joint, is made taking the following criteria into account: 

Temperature resistance, Resistance to corrosion, Forming capacity, Mechanical characteristics, Resistance to fatigue, Flexibility when in use.

Bellows are manufactured from the following materials with other materials are available upon request. 

Stainless Steel: Type 300 Austentic Series, Duplex, Super Duplex Stainless Steel 

Nickel Alloy: 200, 400, 600, 625, 800, 825 

Hastelloy (C22 & C276) 

Titanium & Monel Grades 

Erith is committed to offer quality products and services with one of the most comprehensive Quality Assurance Programs in the industry with the following tests. 

X-ray  

Isotope Radiography 

Dye Penetrant testing 

Ultrasonic testing 

Helium Leak Detection 

Positive Material Identification (PMI) 

Hydro/Pneumatic Testing 

Cycle Testing 

Material Testing 

  • ABOUT
  • FEATURES AND BENEFITS
  • APPLICATIONS
  • MATERIALS USED
  • INSPECTION & TESTING

Rectangular Expansion Joint may be subjected to axial movement, angular movement, lateral deflection or any combination of these occurring at the interface of bellows and the associated ducting system.

Rectangular Expansion Joints can be manufactured with limitless dimensions, can be supplied with different convolution and corner types:

  • W-shaped, Camera Corner
  • V-shaped, Miter Corner (single or double)

U-shaped, Rounded Corner

  • Economical, with quality materials and punchformed construction
  • Available with carbon steel or 304SS or 316SS any flange ends or weld ends
  • Available with options including tie rods, liners, and covers
  • Temperature up to 1200°C
  • Pressure up to 70 Bars
  • limitless dimensions

Refining technology

Oil and gas industry

Power plant technology

Pulp and paper industry

Shipbuilding

Water and waste water technology

The choice of metals to be used in manufacturing the bellows, being the basic component of the Expansion Joint, is made taking the following criteria into account: 

Temperature resistance, Resistance to corrosion, Forming capacity, Mechanical characteristics, Resistance to fatigue, Flexibility when in use.

Bellows are manufactured from the following materials with other materials are available upon request. 

Stainless Steel: Type 300 Austentic Series, Duplex, Super Duplex Stainless Steel 

Nickel Alloy: 200, 400, 600, 625, 800, 825 

Hastelloy (C22 & C276) 

Titanium & Monel Grades 

Erith is committed to offer quality products and services with one of the most comprehensive Quality Assurance Programs in the industry with the following tests. 

X-ray  

Isotope Radiography 

Dye Penetrant testing 

Ultrasonic testing 

Helium Leak Detection 

Positive Material Identification (PMI) 

Hydro/Pneumatic Testing 

Cycle Testing 

Material Testing