Tempering process of oil casing
The tempering process of the casing pipe is a heat treatment process of reheating the quenched workpiece to a suitable temperature lower than the…
Testing method for petroleum casing
We generally have the following methods for the quality inspection of oil casing 1. Ultrasonic testing. When ultrasonic waves are scattered…
Four, annealing
1. What is annealing? Annealing is a metal heat treatment process in which the metal is slowly heated to a certain…
Third, normalizing
1. What is normalizing? Normalizing is a heat treatment that improves the toughness of steel.After heating the steel components to 30…
The Tempering
1. What is tempering? Tempering after quenching metal timber or parts of heating to a certain temperature, heat preservation, after a…
Chinese President Xi Jinping to visit Brazil in November for BRICS summit
SAO PAULO (Reuters) – Brazil’s Vice President Hamilton Mourao said on Monday that Chinese President Xi Jinping will visit Brazil in…
Chinese President Xi Jinping to visit Philippines as relations between two sides warm
Chinese President Xi Jinping is expected to visit the Philippines before the end of the year in the latest sign of…
Beijing’s new airport completes dry run
Hebei Airlines crew take part in the largest test to date at Beijing Daxing International Airport on Friday. Beijing Daxing International…
US business man protest tax increases: tariffs are a job-killer as they erode the job growth
“Us-China trade war will turn to the consumer,” as of September 1st, the government will trump to worth about $125 billion…
Xi orders military to boost readiness
President Xi Jinping visits the operational command center of a People’s Liberation Army Air Force base in Gansu province on Thursday to…
Error! Quenching, tempering, normalizing, annealing
A, quenching What is quenching? Steel quenching is one of the steel is heated to a critical temperature Ac3 (hypoeutectoid steel)…
China, Tunisia eye further cooperation under BRI
Song Tao, left, head of the International Department of the Central Committee of the Communist Party of China (CPC) meets with Tunisian…