Knowledge
ERW Welded Pipe vs Seamless Steel Pipe, what’s the difference?
ERW Welded Pipe is formed by rolling plate and welding the seam by high frequency welder. The weld flash can be removed from the outside or inside surfaces using a scarfing blade. read more →
What is HFW Pipe ?
What is HFW Pipe ? HFW Pipe means high frequency welded pipe. To understand better HFW pipe, you should first know what is EW pipe. read more →
What is MTC for Steel ?
What is MTC for Steel? Definition, In steel industry, MTC means mill's test certificate. Some mills also call it as MTR, that is, mill's test report. read more →
Black Pipes and Carbon Pipes, what is the difference
In general "black" steel pipe and carbon steel pipe have about the same procedures for welding. That is if you are talking about general welding and not for some specific application like very cold temperatures. read more →
SCH 40 & SCH 80 Steel Pipe Dimension Chart
Schdule 40 pipe dimension chart read more →
What is Pipe Number ?
With those coils or plates, HYSP produce API 5L Line Pipe, A53 Steel Tube, A252 Piling Pipe, Structure Steel Pipe, and to mark every pipe we produce and for trace purpose, we will mark one unique pipe number on the surface of our ERW welded pipe. Every pipe number is unique and traceable to the coil or plate number and then heat number. Those numbers are connected and with one of them, the rest is traceable. read more →
What is ERW Pipes Definition ?
What does ERW pipe mean ? ERW pipes means Electric Resistance Welded Pipes. ERW steel pipes and tubes are used in various engineering purposes, fencing, scaffolding, line pipes etc. read more →
What is Charpy V-Notch Test ( CVN Impact Test) ?
The Charpy V-notch-CVN impact test, also known as the Charpy V-notch test, is a standardized high strain-rate test which determines the amount of energy absorbed by a material during fracture. This absorbed energy is a measure of a given material's notch toughness and acts as a tool to study temperature-dependent ductile-brittle transition. read more →
What is Steel Pipe Heat Number ?
A heat number is a unique identifying code a technician stamps on a piece of metal to provide information about its origins. Metal plate and pipes are most likely to bear this number, and in some cases, the law requires its use on metal products. The heat number provides a method for tracing materials and is an important part of quality assurance and control. read more →