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The seamless steel tubes are mostly medium and high-carbon alloy steels. After quenching, some of the subcooled austenite is not transformed into martensite, and it remains in the service state to bec...

Oil casing is mainly used to support the walls of oil, gas and water wells. It is an important guarantee for the normal operation of oil and gas wells after drilling and completion. Due to factors suc...

Mechanical properties of oil casing pipe J55 and K55 in API 5CT specification: 1. Heat treatment PSL1 requirements: In API 5CT, J55 and K55 require delivery in rolled state; PSL2 requirements: In API ...

The quality assessment process of ERW steel pipe consists of online non-destructive testing, metallographic inspection, flattening and flaring destructive tests, and hydraulic tests. Evaluation proces...

The production process of high-frequency welded pipes (ERW steel pipe) mainly depends on the type of product. From raw materials to finished products, a series of processes are required. The completio...

Seamless steel tubes have a hollow section and are used in large quantities as pipelines for conveying fluids, such as pipelines for conveying oil, natural gas, gas, water and certain solid materials....

In daily steel purchases, the most annoying thing is the purchase of low-quality seamless steel tubes, which affects product quality. How to identify low-quality seamless steel tubes? Let's take a loo...

The content of seamless steel pipe & tube size inspection mainly includes: the wall thickness, outer diameter, length, curvature, ovality, end slope and blunt angle of the steel pipe, and the cros...

Generally, forging cracks will form at high temperatures. Due to the expansion of the cracks and exposure to air, under a microscope, the inside of the cracks is full of oxide scale, and both sides ar...

Because of the large diameter and thin wall thickness of large-diameter thin-walled LSAW steel pipes, special attention must be paid during transportation. When transporting large-diameter thin-walled...