LP spa established in 1976 with major presence in petrochemical plants and most recently in cogeneration plants for manufacturing and supply of: Finned Tubes, Studded Tubes, Headers and Manifolds, Fired heater radiant and convection coils/modules, Waste heat boilers, preheaters, economizers, and superheaters Cryogenic liquid vaporizers (LNG), Cold collectors and transferline, Piping systems, Skid Assemblies. Our proud history of more than 40 years of activity has given us the expertise required to manufacture the finest equipment available.
LP spa has a labour force of 100 people and utilizes all the most up-to-date production devices.
Manufacturing process
This manufacturing process is carried out under strict standards. We also produce finned tubes with intermediate plain portions where required.
USES OF WELDED FINNED TUBES
SIZES AND MATERIALS
Any combination of the following materials may be used for fin and tube: carbon, alloy, stainless steels and high nickel alloys.
Welding process
The welding process enables the combination of any grades for studs and tube: carbon, alloy, stainless steels and high nickel alloys. Alloy steel pipes are stress-relieved after studding, according to the relevant specifications for the class and grade of steel used.
Corrosion protection
Our engineers are always ready to assist you with design considerations to meet your specific product needs.
USES OF STUDDED TUBES
Welding process
LP spa, with its inhouse bending machines, possess several years of experience in the supply, fabrication and assembly of submerged tube bundles.
The bending technology adopted by LP spa. is also ideal for the fabrication of inlet and outlet hairpins with different bending radius and several combinations of pipe diameters and thicknesses.
LP spa has a wide experience in the manufacture of:
• Fired Heater Radiant and Convection Coils
• Fired Heater Modules
• Waste Heat Boilers, Preheaters, Economizers and Superheaters
• Piping Systems
• Skid assemblies
Our services cover also:
• Sandblasting and painting
• Refractory lining
• Refractory thermal dry-out
• Modularization
• Trial assembly
• Corrosion protection works.
In the cold collector system, the reformed gas is introduced directly from the individual tubes to the transfer line which is located outside the furnace. In this system, special devices are required for connecting the hot parts to the cold collectors. Different versions of this concept are used by Linde Engineering, Haldor Topsoe, Lurgi, Uhde and other engineering companies. LP spa during several years of activity has successfully supplied and fabricated cold collectors based on all design concepts. Modern fabrication technologies joined with gained experience and knowledge have led cold collectors to be LP spa flagship product. Recently, investments have been made in our workshop in order to allow the most efficient fabrication process which leads to the highest quality of refractory lined cold collectors.
LP spa, has all the technology and experience in the supply, fabrication and assembly of inlet/outlet hairpins and distributor. The bending machinery adopted by LP spa is capable of different bending radiuses and several combinations of tube diameters and thicknesses. Moreover, a new welding robot has been introduced in order to guarantee the maximum quality during welding activity.
Outlet pigtails are fabricated from pipe 1-1/2” under the rules of ASME B31.3. Outlet pigtails are made from ASTM B 407 alloy 800H (30% Ni, 20% Cr). These alloys combine corrosion resistance with strength and metallurgical stability. Alloys 800H and 800HT are the standard materials for intermediate working temperatures (620 to 925 °C).
Inlet Pigtails are fabricated from pipe 1“ under the rules of ASME B31.3. Inlet pigtails are made from ASTM A312 Grade TP304H austenitic stainless steel. The Inlet pigtails operate at relatively lower temperature than outlet pigtails. Design temperature is 440°C.
