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  • Automatic welding technologies for long-distance

    2014-10-1u2002·u2002In recent years, automatic welding, high in automatic degree, low in labor intensity, good in welded joint appearance shape, fast in welding speed, high in first-time welding pass rate, has been widely applied,,,,, in on-site welding of long-distance oil/gas pipelines intensity etc. Limited by the pipeline routes, welding techniques, equipment volumes, etc., the pipeline automatic welding …

    Get Price
  • High-strength Large-diameter Pipe For Long-distance

    The base metal of experimental pipe has high tensile strength with 823MPa and 279J impact toughness at 263K, and weld metal displayed 831MPa tensile strength and 179J impact toughness at 263K ...

    Get Price
  • Distance of Piping weld to weld as per ASME B 31.3

    2018-8-24u2002·u2002Distance of Piping weld to weld as per ASME B 31.3. By MBSims Date 11-26-2007 05:27. Minimum distance between girth welds is usually covered in the fabrication or installation specifications and is not a code requirement. If you want to add a weld not shown on the isometric drawing, you usually have to get the approval of the piping designer ...

    Get Price
  • SPECIFICATION FOR PIPEWORK WELDING, INSPECTION,

    2015-3-2u2002·u2002a) Where piping is intended for service at temperatures above 1876oC or pressures above 150 psig (10.3 barg) b) Where piping is intended for …

    Get Price
  • Welding Pressure Pipeliners and Piping Systems

    2015-6-5u2002·u2002to weld the root pass. In any case, it is best to have welders either (1) weld opposite one another or (2) evenly spaced around the pipe. This will minimize the amount of distortion in the pipe and prevent the gap from opening or closing. If possible, it is also desirable not to fin-ish a weld in exactly the bottom of the pipe because the tie ...

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  • General Welding Guidelines - MCAA

    2016-4-5u2002·u2002Table 4, Reinforcement-B31.3 Piping ..... 17 . Table 5, Welding Lens Shade Selections ..... 21 . Table 6, Determining Purge Time ..... 22 . FORWARD. These General Welding Guidelines are intended to provide background information and supplementary instructions to ... arc, keep the torch over the weld bead long enough to .

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  • Laser/MAG Hybrid Welding for Land Pipeline Construction

    Potential of hybrid laser/MAG welding for pipelines. The fabrication sequence for the land lay of large diameter long distance pipelines using the mechanised MAG processes is generally as follows: Pipe facing and fit up. Root pass - either by internal welding, or, external welding, usually with internal copper backing. Fill passes. Capping passes.

    Get Price
  • PIPELINE SOLUTIONS - ESAB

    Providing high weld metal strength and impressive low-temperature toughness, ESAB low-hydrogen basic electrodes are used for pipe steel grades up to X80. Pipeweld basic electrodes offer good penetration during uphill welding and can be used for the root pass, filling and capping, and weaving. FILLER METALS Uphill welding Pipeweld 7016

    Get Price
  • Automatic welding technologies for long-distance

    2014-10-1u2002·u2002In recent years, automatic welding, high in automatic degree, low in labor intensity, good in welded joint appearance shape, fast in welding speed, high in first-time welding pass rate, has been widely applied,,,,, in on-site welding of long-distance oil/gas pipelines intensity etc. Limited by the pipeline routes, welding techniques, equipment volumes, etc., the pipeline automatic welding ...

    Get Price
  • High-strength Large-diameter Pipe For Long-distance

    The base metal of experimental pipe has high tensile strength with 823MPa and 279J impact toughness at 263K, and weld metal displayed 831MPa tensile strength and 179J impact toughness at 263K ...

    Get Price
  • Distance of Piping weld to weld as per ASME B 31.3

    2018-8-24u2002·u2002Distance of Piping weld to weld as per ASME B 31.3. By MBSims Date 11-26-2007 05:27. Minimum distance between girth welds is usually covered in the fabrication or installation specifications and is not a code requirement. If you want to add a weld not shown on the isometric drawing, you usually have to get the approval of the piping designer ...

    Get Price
  • SPECIFICATION FOR PIPEWORK WELDING, INSPECTION,

    2015-3-2u2002·u2002a) Where piping is intended for service at temperatures above 1876oC or pressures above 150 psig (10.3 barg) b) Where piping is intended for pressure temperature rating of Class 300 and 600

    Get Price
  • Welding Pressure Pipeliners and Piping Systems

    2015-6-5u2002·u2002to weld the root pass. In any case, it is best to have welders either (1) weld opposite one another or (2) evenly spaced around the pipe. This will minimize the amount of distortion in the pipe and prevent the gap from opening or closing. If possible, it is also desirable not to fin-ish a weld in exactly the bottom of the pipe because the tie ...

    Get Price
  • General Welding Guidelines - MCAA

    2016-4-5u2002·u2002Table 4, Reinforcement-B31.3 Piping ..... 17 . Table 5, Welding Lens Shade Selections ..... 21 . Table 6, Determining Purge Time ..... 22 . FORWARD. These General Welding Guidelines are intended to provide background information and supplementary instructions to ... arc, keep the torch over the weld bead long enough to .

    Get Price
  • Laser/MAG Hybrid Welding for Land Pipeline Construction

    Potential of hybrid laser/MAG welding for pipelines. The fabrication sequence for the land lay of large diameter long distance pipelines using the mechanised MAG processes is generally as follows: Pipe facing and fit up. Root pass - either by internal welding, or, external welding, usually with internal copper backing. Fill passes. Capping passes.

    Get Price
  • PIPELINE SOLUTIONS - ESAB

    Providing high weld metal strength and impressive low-temperature toughness, ESAB low-hydrogen basic electrodes are used for pipe steel grades up to X80. Pipeweld basic electrodes offer good penetration during uphill welding and can be used for the root pass, filling and capping, and weaving. FILLER METALS Uphill welding Pipeweld 7016

    Get Price
  • Analysis and Comparison of Long-Distance Pipeline Failures

    2017-5-25u2002·u2002The analysis results of long-distance oil and gas pipeline failures are important for the industry and can be the basis of risk analysis, integrity assessment, and management improvement for pipeline operators. Through analysis and comparison of the statistical results of the United States, Europe, the UK, and PetroChina in pipeline failure frequencies, causes, consequences, similarities, …

    Get Price
  • History of Gas and Oil Pipelines without Pic

    2019-7-31u2002·u2002mile long kerosene pipeline between Baku and Batum • 1907 Gulf Pipeline built a 6-inch line 480 mile line from Glennpool, OK to Port Arthur, TX • 1925 The first long distance all welded pipeline is laid by Magnolia Gas from North LA to Beaumont, Texas. It is 217 miles long and consisted of 14, 16, and 18 inch diameter pipe

    Get Price
  • General Welding Guidelines - MCAA

    2016-4-5u2002·u2002Table 4, Reinforcement-B31.3 Piping ..... 17 . Table 5, Welding Lens Shade Selections ..... 21 . Table 6, Determining Purge Time ..... 22 . FORWARD. These General Welding Guidelines are intended to provide background information and supplementary instructions to ... arc, keep the torch over the weld bead long enough to .

    Get Price
  • Oil Pipeline Characteristics and Risk Factors ...

    2011-12-9u2002·u2002table below, the most important decades for the construction of the pipelines currently in service were the 1950s (22% of the total in service) and the 1960s (23%). The development of long-distance, large-diameter pipelines during and after World War II placed the pipeline industry in a position to fuel the post-War boom.

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  • OXYGEN PIPELINE AND PIPING SYSTEMS - asiaiga.org

    2014-5-30u2002·u2002The scope of this document is for metal oxygen pipelines, distribution piping systems, and gaseous oxygen piping on an air separation plant external to the coldbox. It is limited to gaseous oxygen with a temperature range between –30 °C and 200 °C (–22 °F and 400 °F), pressures up to …

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  • Piping Design Specification - inspection-for-industry.com

    4.3.distance pipe lines - piping design specification 4.3.1. To permit ready access for the removal or maintenance of a pipeline, under operating conditions, a minimum side clearance of 25 mm shall be provided between parallel lines outside of insulation or between flange and pipe (insulation).

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  • Natural Gas TM - anl.gov

    2008-2-11u2002·u2002However, this small-diameter pipe is usually used only in gathering and distribution systems, although some is used for control-line or gauge-line purposes. Mainline pipes, the principal pipeline in a given system, are usually between 16 and 48 inches in diameter. Lateral pipelines, which deliver natural gas to or from the mainline, are

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  • How to measure pipe straightness — OMS

    2020-3-17u2002·u2002How to measure pipe straightness – the methods. Taut line method. Taut line method. In this measurement method spacer blocks are mounted at each end of the pipe and a strong, lightweight wire or string is pulled tight between them. The distance is measured and the difference between the length of the pipe and the length of the line calculated.

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  • Guidelines for the Design of Buried Steel Pipe July 2001

    2011-12-19u2002·u2002Welded pipe, joined by welding techniques permitted by the ASME code or the API standards. Piping designed, fabricated, inspected and tested in accordance with an ASME B31 pressure piping code. These codes are: B31.1 power piping, B31.3 process piping, B31.4 liquid hydrocarbon pipelines, B31.5 refrigeration piping, B31.8 gas transmission and

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  • PRACTICAL PIPING COURSE - Engineer

    2012-8-19u2002·u20021.1 Definition of Piping Pipe is a pressure tight cylinder used to convey a fluid or to transmit a fluid pressure, ordinarily designated pipe in applicable material specifications. Materials designated tube or tubing in the specifications are treated as pipe when intended for pressure service.

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  • Modelling and Measurements for a Full Scale Pipe Bend

    Pipe bend test. The pipe was 24in diameter with a wall thickness of 24.5mm. The specimen was 6m long with the weld located at the centre of its length. The weld was made with the Passo, automatic GMAW process. CO 2 shielding was used on the root pass, and 70%CO 2, …

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  • A History of Oil Spills on Long-Distance Pipelines in ...

    2019-12-2u2002·u2002Spills have always been a risk associated with oil pipelines in Canada. Data from the neb 's incident reports reveal that oil spills have been endemic to Canada's long-distance pipeline systems from the 1960s to the 1990s, and further evidence suggests that the problem existed even earlier than that.

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  • Automatic welding technologies for long-distance pipelines ...

    2014-10-1u2002·u2002In recent years, automatic welding, high in automatic degree, low in labor intensity, good in welded joint appearance shape, fast in welding speed, high in first-time welding pass rate, has been widely applied,,,,, in on-site welding of long-distance oil/gas pipelines intensity etc. Limited by the pipeline routes, welding techniques, equipment volumes, etc., the pipeline automatic welding …

    Get Price
  • High-strength Large-diameter Pipe For Long-distance High ...

    The base metal of experimental pipe has high tensile strength with 823MPa and 279J impact toughness at 263K, and weld metal displayed 831MPa tensile strength and …

    Get Price
  • Distance of Piping weld to weld as per ASME B 31.3

    2018-8-24u2002·u2002Distance of Piping weld to weld as per ASME B 31.3. By MBSims Date 11-26-2007 05:27. Minimum distance between girth welds is usually covered in the fabrication or installation specifications and is not a code requirement. If you want to add a weld not shown on the isometric drawing, you usually have to get the approval of the piping designer ...

    Get Price
  • SPECIFICATION FOR PIPEWORK WELDING, INSPECTION,

    2015-3-2u2002·u2002a) Where piping is intended for service at temperatures above 1876oC or pressures above 150 psig (10.3 barg) b) Where piping is intended for …

    Get Price
  • Welding Pressure Pipeliners and Piping Systems

    2015-6-5u2002·u2002to weld the root pass. In any case, it is best to have welders either (1) weld opposite one another or (2) evenly spaced around the pipe. This will minimize the amount of distortion in the pipe and prevent the gap from opening or closing. If possible, it is also desirable not to fin-ish a weld in exactly the bottom of the pipe because the tie ...

    Get Price
  • General Welding Guidelines - MCAA

    2016-4-5u2002·u2002Table 4, Reinforcement-B31.3 Piping ..... 17 . Table 5, Welding Lens Shade Selections ..... 21 . Table 6, Determining Purge Time ..... 22 . FORWARD. These General Welding Guidelines are intended to provide background information and supplementary instructions to ... arc, keep the torch over the weld bead long enough to .

    Get Price
  • Laser/MAG Hybrid Welding for Land Pipeline Construction - TWI

    Potential of hybrid laser/MAG welding for pipelines. The fabrication sequence for the land lay of large diameter long distance pipelines using the mechanised MAG processes is generally as follows: Pipe facing and fit up. Root pass - either by internal welding, or, external welding, usually with internal copper backing. Fill passes. Capping passes.

    Get Price
  • PIPELINE SOLUTIONS - ESAB

    Providing high weld metal strength and impressive low-temperature toughness, ESAB low-hydrogen basic electrodes are used for pipe steel grades up to X80. Pipeweld basic electrodes offer good penetration during uphill welding and can be used for the root pass, filling and capping, and weaving. FILLER METALS Uphill welding Pipeweld 7016

    Get Price
  • Analysis and Comparison of Long-Distance Pipeline Failures

    2017-5-25u2002·u2002The analysis results of long-distance oil and gas pipeline failures are important for the industry and can be the basis of risk analysis, integrity assessment, and management improvement for pipeline operators. Through analysis and comparison of the statistical results of the United States, Europe, the UK, and PetroChina in pipeline failure frequencies, causes, consequences, …

    Get Price
  • History of Gas and Oil Pipelines without Pic

    2019-7-31u2002·u2002mile long kerosene pipeline between Baku and Batum • 1907 Gulf Pipeline built a 6-inch line 480 mile line from Glennpool, OK to Port Arthur, TX • 1925 The first long distance all welded pipeline is laid by Magnolia Gas from North LA to Beaumont, Texas. It is 217 miles long and consisted of 14, 16, and 18 inch diameter pipe

    Get Price
  • SPECIFICATION FOR PIPEWORK WELDING, INSPECTION,

    2015-3-2u2002·u2002a) Where piping is intended for service at temperatures above 1876oC or pressures above 150 psig (10.3 barg) b) Where piping is intended for pressure temperature rating of Class 300 and 600

    Get Price
  • ASME B31.3 Process Piping Guide - Los Alamos National ...

    2009-4-1u2002·u2002LANL Engineering Standards Manual PD342 Chapter 17 Pressure Safety Section D20-B31.3-G, ASME B31.3 Process Piping Guide Rev. 2, 3/10/09 4 The Owner and Designer are responsible for compliance with the personnel and process qualification requirements of the codes and standards. In particular, the application of ASME B31.3 requires compliance with the Inspector qualification

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  • Pipe Dreams: Water Supply Pipeline Projects in the West

    2018-3-9u2002·u2002June 2012 Pipe Dreams: Water Supply Pipeline Projects in the West Authors Denise Fort, University of New Mexico Law School Barry Nelson, Natural Resources Defense Council Research Kelly …

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  • Performance Of Long Range Ultrasonic Inspection Using ...

    2015-6-1u2002·u2002spiral welded pipe, its range will be much less than Seamless pipe. The spiral weld will reflect guided wave so that the background noise will be a little higher than seamless pipe. By the test illustrated in Fig. 5 and fig. 6, related to a 42-inch pipe, 13.5 m long and PE coated & buried line, respectively.

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  • SUBSEA PIPELINE SYSTEMS

    2021-7-31u2002·u2002of pipelines is also addressed, but only to the extent that proper functioning of the pipe and its components affects safety. This Guide may also be used for certification or verification of, construction and design installation of pipelines. ABS will certify or verify design, construction and …

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  • Guidelines for developing a procedure for the weld repair ...

    2017-5-23u2002·u2002Problems we face during the weld repair of process pipelines which are already in service are entirely different compare to the fabrication of a new piping system at fabrication yard. The main ...

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  • [PDF] Oil And Gas Pipelines And Piping Systems

    2016-9-10u2002·u2002Oil and Gas Pipelines and Piping Systems Book Description : Oil and Gas Pipelines and Piping Systems: Design, Construction, Management, and Inspection delivers all the critical aspects needed for oil and gas piping and pipeline condition monitoring and maintenance, along with tactics to minimize costly disruptions within operations.

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  • Steel Pipe—A Guide for Design and Installation

    2019-8-19u2002·u2002handle the diff erent pressures based on the pipe's elevation and the hydraulic gradient. Roll-formed pipe with riveted seams was the dominant method of pipe fabrication until the 1930s when the electric welding process replaced the labor-intensive riveted seams. In consideration of the relatively low tensile strength of steels produced in ...

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  • Wilhelmsen Ships Service - Unitor Welding Handbook

    2016-4-29u2002·u2002long and weather-beaten coast of Norway. The focus changed towards gas and arc welding techniques when these were developed to useful production and repair methods through the 1930es. A main objective became to develop and maintain a range of welding equipment that is suitable for onboard welding, backed by a worldwide service network, training and

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  • Pipe support during excavation of gasline - Pipelines ...

    2014-5-22u2002·u2002A good reference on the subject introduce in the OP is 'Theory and Design-Tubular Steel Structure', 2nd Edition, by James F. Lincoln Arc Welding Foundation, Chapter 9 Above Ground Pipelines. The second edition is my copy, however, updated editions may have been published.

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  • Overview of Interstate Hydrogen Pipeline Systems

    2008-2-7u2002·u2002likely be required for long-distance pipeline transmission of hydrogen. The safety record for these pipelines is considered to be very good. This safe history notwithstanding, the definition of required safety margins, codes, and standards for application to large-scale hydrogen transport remains a work in progress.

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  • Oil Pipeline Characteristics and Risk Factors ...

    2011-12-9u2002·u2002table below, the most important decades for the construction of the pipelines currently in service were the 1950s (22% of the total in service) and the 1960s (23%). The development of long-distance, large-diameter pipelines during and after World War II placed the pipeline industry in a position to fuel the post-War boom.

    Get Price
  • Recent developments in high productivity pipeline welding

    The initial aim is to weld pipe up to DN200 and in wall thicknesses up to 6.3mm. In the longer term they plan to weld up to DN450 Class 900 X70 pipe or higher grade. The welding cycle time is claimed to be 1 minute, so in the right terrain they will be able to weld several or more kilometres per shift. Summary

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  • HDPE Pipe - High Density Polyethylene Pipes Systems

    2021-9-29u2002·u2002Polyethylene Hdpe Pipe Welding Prices. Hdpe pipes, which are not affected by chemicals, are highly preferred for welding because their durability is quite long. Welding prices for Kuzeyboru Hdpe pipes, which are used safely in many projects with their wide area of use, are also offered with special offers suitable for the projects.

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  • Pipe Dreams: Water Supply Pipeline Projects in the West

    2018-3-9u2002·u2002June 2012 Pipe Dreams: Water Supply Pipeline Projects in the West Authors Denise Fort, University of New Mexico Law School Barry Nelson, Natural …

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  • 15. Pipe Slope and Manhole Distance. - WSSC Water

    2021-3-2u2002·u2002Take the invert difference (2.0 feet) and divide it by the pipe distance (300 feet). The pipe slope will be 0.0067 feet per hundred feet or 0.67%. Show the pipe slope on the profile. 3) Pipe slope and distance for sewer pipelines 48-inch and larger diameter. a) To determine the pipe distance for 48-inch and larger sewers in circular manholes ...

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  • Steel Pipe—A Guide for Design and Installation

    2019-8-19u2002·u2002handle the diff erent pressures based on the pipe's elevation and the hydraulic gradient. Roll-formed pipe with riveted seams was the dominant method of pipe fabrication until the 1930s when the electric welding process replaced the labor-intensive riveted seams. In consideration of the relatively low tensile strength of steels produced in ...

    Get Price
  • Pipe Support Span - Pipelines, Piping and Fluid Mechanics ...

    2003-12-24u2002·u2002Pipelines, Piping and Fluid Mechanics engineering Forum; Pipe Support Span. 5. ... Do a advance search and your will fine many threads for pipe supportspand distance. lst . RE: Pipe Support Span. ... but I would like to know the Span for larger diameter of pipes (As the table shows only upto Dia.300mm) and moreover since we are using in our ...

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  • Traced and Jacketed Piping

    2021-7-19u2002·u2002The simplest form of tracer is one that is clipped or wired on to the main product line. The maximum heat flow is achieved when the tracer is in tight contact with the product line. The securing clips should be no further apart than 0.3 to 0.45m (12' to 18') on 10 mm (3/8') tracers, 0.45 to 0.6 to 0.9m (24' to 36') on 20 mm (3.4') and larger.

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  • Pipe Color Code Standard and Piping Color Codes Chart

    2021-8-29u2002·u2002BS1710 uses two types of colour coding to identify the content of pipe and hazard. Base colour – Base colours are used to indicate the content inside the pipe. Safety colours – These colours are used as band colours that applied in conjunction with the base pipe color code to create various service identifiers.

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