Piping can be supplied as individual straight lengths, elbows or tee fittings with flanges and gaskets for assembly. It can also be fabricated as spooled sections eliminating 2/3 of the flanged connections. Weld end connections with final field welding can also be supplied.
The manufacturing of chemicals, petrochemicals, and oil & gas products, exposes process equipment to highly corrosive fluids. Analyses of fluids, pressures, and manufacturing temperatures used in these processes have shown Duplex Stainless Steel Pipe to be very corrosion resistant.
The fluids used in chemical processing are extremely corrosive and the materials of construction for processing equipment require very special consideration. Without correct specification, conditions will rapidly decline, leading to unit repair or replacement and expensive manufacturing downtime.
The following information is provided as background on Duplex Stainless Steel, the alloy’s characteristics, its strengths and how consideration of a Duplex Stainless Steel Piping System could be the answer to corrosion.
Duplex Stainless Steel Piping offers long-term and cost-effective methods to prevent damaging corrosio
Life Cycle Benefits of Duplex Stainless Steel Piping Systems
Duplex Stainless Steel Piping is highly cost-effective over the entire life cycle of the equipment. Properly maintained, Duplex Stainless Steel Piping can operate for decades, making them a very economical choice over other reactive metals.
Duplex Stainless Steel Piping can:
Deliver many years of economical service life
Eliminate expensive downtime due to equipment failure
Provide outstanding corrosion resistance
Accommodate high steam pressure
Remove possibilities of process fluid leaks
Effectively protect against stress cracking
Duplex Stainless Steel the Metal
Duplex Stainless Steel offers excellent resistance to corrosion along with very high mechanical strength, which allows for lighter fabrication and greater design flexibility. With this high corrosion resistance, Duplex Stainless Steel provides more uptime than Carbon Steel or conventional Stainless Steel.
Duplex Stainless Steel’s beneficial performance is attributable to a combination of austenitic and ferrite alloys in its microstructure, achieving both strength and high corrosion resistance.
With its myriad applications, the process industries are always in pursuit of highly reliable materials. Duplex Stainless Steel Piping is widely endorsed by plant operations management and maintenance specialists who appreciate their toughness and ability to withstand the very aggressive fluids inherent in the process.
Compared with some other materials – graphite, ceramic, PTFE or glass, nickel alloys – Duplex Stainless Steel is a reliable and in the long term, a less costly material of construction offering high strength even in highly demanding applications. These qualities have led to acceptance and growth of the use of Duplex Stainless in Pipe, Piping Systems, Reactors, Columns, Towers and Storage Tanks as well as Shell and Tube Heat Exchangers in sulfuric acid processing as well as the production of urea and other fertilizers.
It is important to note that due the proportions of austenitic and ferrite alloys, both Duplex Stainless Steels and Super Duplex Stainless Steels require considerably more care in welding preparation and fabrication procedures. Inexperience or less than vigilant attention to these preferred practices can contaminate the resulting welding, rendering the fabrication compromised in strength and corrosion-resistance.
Duplex Stainless Steel Piping Design
Duplex Stainless Steel Piping Systems are some of TITAN’s most frequently fabricated products. TITAN designs and custom manufactures Duplex Stainless Steel Piping for many different process applications. Consider spooled piping which can eliminate the majority of flanged connections.
Designs and accessories to Duplex Stainless Steel include:
Solid wall
Large diameter
Explosive clad
Individual straight
Elbows or Tee fittings
Flanges and gaskets
Spooled sections
ID polishing
Jacketed for heat transfer
Dual containment designs
Weld end connections with final field welding can also be supplied.
Manufacturing capacities include widths up to 120″ diameter, 300’ in length and weights up to 200 tons.
Piping larger than 8″ diameter is normally supplied as rolled and welded cylinders meeting the requirements of ASME Code, Section 8, Division I.
TITAN manufactures pressure equipment in accordance with all major international design standards and pressure vessel codes.
Using both HTRI and AspenTech thermal design software, we design and custom build many different styles of Duplex Stainless Steel Pipe.
Pipeline Station & Facility Construction
NAWA capabilities extend beyond pipeline construction to include natural gas facility work, whether in conjunction with a pipeline project or as a stand alone scope of work. We have experience with all facets of compression and regulation, from multiple compressor greenfield projects to setting regulators, or retrofitting launchers and receivers. In addition to new construction, we have done a number of station rebuilds and flow reversal projects inside of existing facilities with significant amounts of hot work.
Some of the various responsibilities within a station facility related project include:
Installation and maintenance of environmental control devices
Civil work, including mass excavation
Fabrication of proposed facilities
Concrete foundations installation
Measurement and regulation installation
Launcher and receiver installation
Hot tap tie-ins utilizing short stop and spherical tee technology
Holding tank and dike system installation
Heater, filter separator and odorizer installation
Cathodic protection and rectifier systems
Pipe integrity testing by air, water, and nitrogen
Complete restoration of all disturbed areas
Building construction and fencing
The same attention to safety, preservation of the environment, quality and efficiency on which we have built our business holds true for the construction of station facilities as well.
Pipeline Maintenance
NAWA Pipeline has significant experience in all facets of oil and gas pipeline construction, including pipeline integrity management and ongoing maintenance services. Our team provid both distribution and transmission services has created an extremely diverse set of skills among employees and management team, allowing us to effectively handle projects large and small in a timely manner.
Some of the featured services within Pipeline Integrity and Maintenance include:
• Third Party Damage Repairs
• Cased Pipe Remediation
• Composite and Steel Repair
• Live Line Repair
• Sand Blasting and Mainline Recoating
• Station Rebuilds
• Large Valve Replacement
• Anodes
• Anomaly digs
• ROW and Building Maintenance
• Slip Repair
Expertise
Cross country pipelines
Pump and compressor stations
Gas compression, dehydration and injection facilities
Condensate stabilization
Crude storage tank systems
Receiving terminals
