Introduction to construction method of non-grooving pipeline

Date: 2020-11-05

Introduction to construction method of non-grooving pipeline Non-grooving construction refers to the construction method of laying or pouring pipelines (drains) in holes excavated under the ground along the pipeline. There are pipe jacking method, shield tunneling method, shallow burying method, directional drilling method, ramming pipe method, etc. (1) Closed pipe jacking: Advantages: high construction accuracy. Disadvantages: high cost. Scope of application: water supply and drainage pipelines, integrated pipelines: applicable pipelines. Applicable pipe diameter: 300-4000m. Construction accuracy: less than ±50mm. Construction distance: longer. Applicable geology: various soil layers. (2) Shield method Advantages: fast construction speed. Disadvantages: high cost. Scope of application: water supply and drainage pipelines, integrated pipelines. Applicable pipe diameter: above 3000m. Construction accuracy: uncontrollable. Construction distance: long. Applicable geology: various soil layers. (3) Shallow buried construction pipe (tunnel) road Advantages: strong applicability. Disadvantages: slow construction speed and high cost. Scope of application: water supply and drainage pipelines, integrated pipelines. Applicable pipe diameter: above 1000mm. Construction accuracy: less than or equal to 30mm. Construction distance: longer. Applicable geology: various formations. (4) Directional drilling Advantages: fast construction speed. Disadvantages: low control accuracy. Scope of application: flexible pipes. Applicable pipe diameter: 300mm—1000mm. Construction accuracy: no more than 0.5 times the pipe inner diameter. Construction distance: shorter. Applicable geology: Not applicable to sand, pebble, and water-bearing strata. (5) Tamping tube method Advantages: fast construction speed and lower cost. Disadvantages: low control accuracy. Scope of application: steel pipe. Applicable pipe diameter: 200mm—1800mm. Construction accuracy: uncontrollable. Construction distance: short. Applicable geology: water-bearing stratum is not suitable, sand and pebble stratum is difficult. Post time: Nov-05-2020

Prev : The difference between FRP sand pipe and steel pipe
Next : Coal tar epoxy pipe storage methods
Tags : spiral submerged arc pipe , ERW steel pipe supplier , carbon steel pipe manufacturer

News

Latest news list

How to Reduce Erosion and Wear in Steel Elbows

Steel Elbows redirect flow in industrial piping systems,but this change in direction can make them vulnerable to localized erosion,When fluids carry sand,scale,catalyst particles or other solids,repeated particle impacts may gradually reduce the Steel Elbow wall thickness,Corrosion can accelerate the damage when the fluid is also chemically aggressive,Reducing Steel Elbow erosion starts with identifying the wear mechanism,reviewing operating conditions and tracking wall-thickness changes,The right solution depends on the process,material,fitting geometry and piping design,
How Are Steel Reducers Manufactured and Quality Checked

A steel reducer connects pipes of different diameters while providing a controlled transition in a piping system,Its dimensions,material properties and wall-thickness distribution affect installation,flow conditions and service reliability,For project buyers,understanding steel reducer manufacturing and quality control helps ensure that the supplied fittings match the piping design and applicable specifications,
How to Prevent Leakage at Steel Pipe Fitting Connections

Leakage at steel pipe fitting connections can cause unplanned shutdowns,fluid loss,maintenance costs and safety risks,A steel tee,reducer or elbow may meet its dimensional requirements,yet the connection can still leak because of poor fit-up,joining defects,damaged sealing surfaces or excessive operating loads,Preventing leakage requires attention to the complete piping system,from component selection and installation to inspection and operation,The correct approach depends on whether the connection is welded,flanged or threaded,
How Are Steel Tees Manufactured and Inspected

Steel tees are butt-welding pipe fittings used to connect branch lines to a main pipeline,They are commonly specified in oil and gas,petrochemical,power generation and other industrial piping systems,Their suitability depends on more than nominal size: material grade,branch geometry,wall thickness,manufacturing quality and inspection requirements must all match the project specification,For engineers and purchasing teams,understanding how steel tees are manufactured and inspected helps identify the information that should be confirmed before an order is placed,
How to Store and Handle Oil Casing Before Installation

Oil casing needs proper protection from delivery through installation,Poor lifting practices,damaged thread protectors,unsuitable storage conditions or lost product identification can create problems before casing reaches the well,For drilling contractors,site managers and procurement teams,careful receiving,storage and handling help preserve product condition and prevent avoidable delays,