Large-diameter seamless steel pipe welding preheating
This article needs more work. To help develop this article, click 'Edit this article'.
The difference between the main production of seamless steel pipe and the small diameter of the main production depends on the manufacturer's product range, but generally less than 200mm is small seamless.
Seamless steel tubes have hollow sections and are used in large quantities as pipelines for transporting fluids, such as petroleum, natural gas, gas, water and certain solid materials.
Compared with solid steel such as round steel, the steel pipe is lighter in weight for the same bending and torsional strength. It is an economical section steel and is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycles and so on. Steel frames and other steel scaffolding used in construction are used to manufacture ring-shaped parts, which can improve the material utilisation rate, simplify the manufacturing process, save materials and processing hours.
The technical term for heating large-diameter seamless steel pipe or the welded portion before welding is called preheating. This may be necessary when the ambient temperature around the welding area is too low.
The primary intent of large-diameter seamless steel pipe welding preheating is to reduce the cooling rate of the welded joint. Preheating can lower the cooling rate, but it does not substantially affect the the time at high temperature. Therefore, when welding large-diameter seamless steel tubes with a tendency to harden, the primary technical method for reducing the cooling rate and reducing the tendency of hardening is to preheat, rather than increase the line energy.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Amendment to the GB Energy Bill welcomed by ECA
Move prevents nationally-owned energy company from investing in solar panels produced by modern slavery.
Gregor Harvie argues that AI is state-sanctioned theft of IP.
Heat pumps, vehicle chargers and heating appliances must be sold with smart functionality.
Experimental AI housing target help for councils
Experimental AI could help councils meet housing targets by digitising records.
New-style degrees set for reformed ARB accreditation
Following the ARB Tomorrow's Architects competency outcomes for Architects.
BSRIA Occupant Wellbeing survey BOW
Occupant satisfaction and wellbeing tool inc. physical environment, indoor facilities, functionality and accessibility.
Preserving, waterproofing and decorating buildings.
Many resources for visitors aswell as new features for members.
Using technology to empower communities
The Community data platform; capturing the DNA of a place and fostering participation, for better design.
Heat pump and wind turbine sound calculations for PDRs
MCS publish updated sound calculation standards for permitted development installations.
Homes England creates largest housing-led site in the North
Successful, 34 hectare land acquisition with the residential allocation now completed.
Scottish apprenticeship training proposals
General support although better accountability and transparency is sought.
The history of building regulations
A story of belated action in response to crisis.
Moisture, fire safety and emerging trends in living walls
How wet is your wall?
Current policy explained and newly published consultation by the UK and Welsh Governments.
British architecture 1919–39. Book review.
Conservation of listed prefabs in Moseley.
Energy industry calls for urgent reform.