Quality defects and prevention of oil well pipe thread processing: During the thread processing of oil well pipe, the thread may have quality defects such as black skin, thread deviation, broken thread, thread scratch (bump), and thread parameter exceeding the standard. (1) Black skin of thread:

Flange design refers to the design of the flange connection, which includes three parts: gasket design, bolt (stud) design, and flange body design. The most important method of flange design is the famous Waters method, which was adopted in GB 150. Its design points are: 1. Gasket design: This is

1. The appearance of anti-corrosion steel pipes entering and leaving the warehouse needs to be checked as follows: ① Check each pipe to ensure that the surface of the polyethylene layer is flat and smooth, without dark bubbles, pitting, wrinkles, or cracks, and the overall color needs to be uniform

Large-diameter plastic-coated steel pipes are mainly made of spiral steel pipes or seamless steel pipes as the base material. It is not recommended to use straight-seam welded pipes. Straight-seam welded pipes are usually not as good as spiral steel pipes in terms of pressure bearing, and the cost i

First, the selection of submerged arc steel pipe: 1. For pipelines with high peak-shaving requirements, due to the uneven gas consumption of users and frequent fluctuations in pipeline pressure, the steel pipe is subjected to great alternating stress. Existing defects in the pipe will expand under

The surface quenching and tempering heat treatment of straight seam welded steel pipe is usually carried out by induction heating or flame heating. The main technical parameters are surface hardness, local hardness, and effective hardened layer depth. Hardness detection can be carried out by Vickers

Thick-walled straight seam steel pipes are made by rolling long strips of steel strips of certain specifications into round tubes through high-frequency welding units and welding them into straight seams. The shape of the steel pipe can be round, square, or special-shaped, depending on the sizing ro

First, thick-walled steel pipes require daily maintenance during use: Thick-walled steel pipes are widely used steel varieties. It directly affects economic benefits and personnel lives. Countries around the world attach great importance to the inspection of thick-walled steel pipes and use various

1. Ultrasonic detection: When ultrasonic waves are propagated in the material being tested, the acoustic characteristics of the material and the changes in the internal structure have a certain impact on the propagation of ultrasonic waves. By detecting the degree and situation of the influence of u

Spiral welded steel pipe and straight seam welded steel pipe have different technical characteristics and production processes, and have many differences and distinctions in production. They have different functions and uses, and the value they show in use is also different. The comparison of techni

A galvanized steel pipe is generally called a cold-dip steel pipe. It adopts an electroplating process. Only the outer wall of the steel pipe is galvanized, and the inner wall of the steel pipe is not galvanized. Hot-dip galvanized steel pipe adopts the hot-dip galvanizing process, and both the inne

Seamless carbon steel pipes are a commonly used steel product that is widely used in many industries. Understanding the density of seamless carbon steel pipes is essential for the correct selection and use of steel pipes. First, what is the density of seamless carbon steel pipes? Density is the

359 inner diameter stainless steel pipe is a common steel product with many unique characteristics and is widely used in various fields. This article will introduce the characteristics, advantages, and applications of inner diameter 359 stainless steel pipes in industry and construction. 1. Chara

Stainless steel high-pressure steel pipes are a type of pipe widely used in the industrial field. They are resistant to high pressure and corrosion and are widely used in the petroleum, chemical, aerospace, and other industries. When using stainless steel high-pressure steel pipes, it is very import

Among various building materials, steel pipes undoubtedly occupy an important position. There are many types of steel pipes, among which seamless stainless steel pipes are gradually gaining popularity due to their unique advantages. So, what are the benefits of seamless stainless steel pipes? Fir

Cr15 precision steel pipe is a high-quality steel pipe material. Due to its excellent mechanical properties, corrosion resistance, and processing performance, it is widely used in various fields. First, the characteristics of Cr15 precision steel pipe 1. High strength and toughness: Cr15 precisi

In the steel industry, hot-dip galvanized seamless steel pipe is widely used in many fields due to its excellent anti-corrosion performance and stable structural characteristics. The material selection of hot-dip galvanized seamless steel pipe not only determines its service life and safety but also

Carbon steel pipe 602 is one of the products that has attracted much attention in the steel industry. Carbon steel pipe 602, a carbon steel pipe with excellent performance, is mainly composed of carbon and iron and contains a small amount of alloy elements. Its specific composition and performance d