With the improvement of quality requirements for rolled products, and the application of new technologies and equipment, it could be changed in every step of ro
Among the many factors of affecting the non-metallic inclusions in SM570 molten steel, the weak stirring of SM570 molten steel and the sedation time of SM570 mo
Pickling: The process of using acid solution to remove scale and rust on the surface for SM570 steel plate is called pickling. It is a method of cleaning the me
It is easy to produce a hardened structure, if the cooling rate of P235GH steel is too fast during welding, and the interlayer brittleness increases, it will le
When the production is completed, what are the acceptance criteria for the surface of the P235GH steel plate?1. The surface of P235GH steel plate should be free
It is inevitable that there will be different problems in the production process of the steel plate. What defects may appear on P235GH steel plate?(1) Cracks. I
When the welding process of X80 pipeline steel is unreasonable, or the number of inclusions in the base metal is large, the shape and distribution are uneven, c
According to the sources, the inclusions in X70 pipeline steel can be divided into two categories: endogenous and exogenous. Among them, the endogenous inclusio
·Different standards
a.API5CT: It is an oil casing standard issued by the American Petroleum Institute.
b. API5L: refers to API 5L line pipe, which is th
A515 Gr60 steel is a carbon-silicon-killed steel plate primarily used for high-temperature service in welded boilers and other pressure vessels.In terms of stre
A515 Gr70 is a high-strength steel commonly used for pressure vessels in various industries such as oil and gas, petrochemical, and power generation. It has a m
Inclusions in X70 pipeline steel mainly exist in the form of non-metallic compounds, such as oxides, sulfides, nitrides, etc. Non-metallic inclusions have a gre
In the API 5L steel pipe standard, the quality standards (or requirements) of steel pipes are divided into PSL1 and PSL2. PSL is an abbreviation for product spe
"X" in the X52 stee designation indicates pipeline steel, and "52" indicates that the minimum yield strength value of the steel plate is 52ksi (1ksi=6.895Mpa).
D36 steel plate is a high-strength structural steel used in offshore and marine applications. It is typically used for hull structures and provides excellent we
There are several alternative steel materials to ABS grade A plate, including:1. ASTM A36 steel plate: This is a commonly used mild steel plate that has good st
API 5L generally refers to the implementation standard of pipeline pipes, which include seamless steel pipes and welded steel pipes.The national standard GB/T 9
1.There should be no cracks, scars, folds, air bubbles, inclusions, and visually visible delaminations on the surface of X52 steel plates that are harmful to us
The basic production processes of API 5L X60 pipeline steel mainly include: conventional semi-continuous hot rolling, CSP continuous casting and rolling, medium
Q690D belongs to low-alloy high-strength structural steel, and Q690D can also be called low-temperature-resistant high-strength steel with a yield strength of 6
According to the properties of Q690 steel, the author summarizes the following key points of the welding process:
1.Preheating work. The structural parts of the
In order to obtain good mechanical properties, many high-strength steels use a combination of multiple heat treatment methods. For Q690 steel, the suitable heat
The difference between hot rolling and cold drawing of A53 steel is the difference in production process. The hot rolling of A53 steel is processed at high temp
1. Raw materials
The raw material of A106 steel pipe is steel billet. When making A106 cold-drawn steel pipe, the billet should be dried firs, this is to remove
ASTM A53 is Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.ASTM A106 is Standard Specification for Seamless Carb
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