3PE 코팅 표준은 물용 연성 철 파이프 및 피팅용 시멘트 모르타르 라이닝에 대한 ANSI/AWWA C104/A21.4 미국 국가 표준, ISO 21809 석유 및 천연 가스 산업 - 파이프 라인 운송 시스템에 사용되는 매립 또는 침수 파이프 라인용 외부 코팅, 강관 및 피팅의 DIN 30670 폴리에틸렌 코팅입니다. 일반 베어 파이프는 [...]에서 부식됩니다.

According to API5L, GB/T9711.1 pipeline steel pipe performance requirements, according to the different tempering temperature, tempering can be divided into the following: 1. Low temperature tempering (150-250 degrees) The microstructure obtained by low temperature tempering is tempered martensite. The purpose is to reduce the quenching stress and brittleness of the quenched steel on the premise […]

1. It is generally suitable for welding of thin steel pipe below 6mm, with the characteristics of beautiful and elegant weld molding and small welding deformation.2. The maintenance gas is argon with the purity of 99.99%. When the welding current is 50-50A, the argon flow rate is 8-10L/min, and when the current is 50-250A, the […]

In fact, the vessels is a big category among many steel plates, which has very special composition and many excellent properties. At present, this kind of vessels plate is mainly used to make pressure vessels in the market. For different situations and different uses, the corresponding materials to be made are also different. This kind of […]

The nondestructive testing of steel mainly involves ray testing, ultrasonic testing, magnetic particle testing, penetration testing and eddy current testing.  1. Radiographic Detection (RT)X-ray testing refers to the non-destructive testing method that uses X-ray or gamma ray to penetrate the specimen and uses film as the equipment for recording information. This method is the most […]