Steel Knowledge
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 →
API 5L Steel Pipe Delivery
API 5L Steel Pipe Delivery After API 5L Line Pipe is produced and inspected, HYSP will stack our pipes and wait for notice of shipment and deliver to you. As you know, the handling of round welded pipes is very important job, because there will be many and many times of transfer during the whole production process, so even little damage of pipe surface of beveling will lead to the final big damage to your pipes. read more →
Pipe MTC & Traceability
API 5L Steel Pipe MTC & Traceability HYSP always insist the strict quality control and pursue the high standard welded steel pipe production and top level document job, no matter about the raw material coils and our mild carbon steel pipes. According to API 5L pipe specification, the traceability is also very important factor for one professional API 5L Pipe Mill. read more →
API 5L Pipe Inspection & Test
Pipe Inspection & Test HYSP as API 5L certified steel pipe factory will apply all necessary pipe inspection & test or any other required steel pipe specification tests. To ensure the quality and safety of HYSP's mild welded steel pipes. According to API 5L, there are usually those tests: UT, hydrostatic tester, tensile test, chemical analysis, hardness, flattening test, visual inspection, weighing & measurement, marking. read more →