The biggest difference between straight-seam high-frequency resistance welded pipes (Electric Resistance Welding, referred to as ERW) and seamless steel pipes is that ERW has a weld seam, which is also the key to the quality of ERW steel pipes. Modern ERW steel pipe production technology and equipme

Use a power supply with vertical external characteristics, and use positive polarity for DC (welding wire is connected to the negative pole)2. Generally suitable for welding thin plates below 6mm, with beautiful weld shape and small welding deformation characteristics.3. The protective gas is argon

304 is a versatile stainless steel that is widely used to make equipment and parts that require good comprehensive properties (corrosion resistance and formability).301 stainless steel shows an obvious work hardening phenomenon during deformation and is used on various occasions requiring higher str

1. Oil and gas pipeline: The inner diameter of the pipe should be between 60mm and 200mm, and the wall thickness should be between 6mm and 12mm. The material used should be high-quality steel, and the tensile strength should be no less than 235MPa.2. Water supply and drainage pipeline: The inner dia

Corrosion is a common problem in middle and low-pressure boiler tubes, resulting in reduced tube life and potential safety hazards. To prevent and repair corrosion, follow these steps:1. Material selection: Choose suitable materials for boiler tubes, such as carbon steel, stainless steel, or alloy s

1. Raw material selection: Choose high-quality steel materials with suitable chemical composition and mechanical properties for the production of seamless casing pipe coupling. Common materials include carbon steel, stainless steel, and alloy steel.2. Hot rolling or cold drawing: Depending on the re

1. Protection from corrosion: Seamless drill pipe should be stored in a dry and well-ventilated area to prevent moisture buildup, which can lead to corrosion. Using a dehumidifier or moisture-absorbing agents can be beneficial in maintaining proper humidity levels.2. Proper stacking: It is important

Normalizing is a commonly used heat treatment process for steel pipes. Here is a brief explanation of the normalizing process:1. Heating: The steel pipe is heated to a temperature above the critical transformation temperature, usually between 850°C and 950°C, depending on the steel grade and desired

Stainless steel pipe fittings are a type of pipe fittings. They are made of stainless steel materials, so they are called stainless steel pipe fittings. They include stainless steel elbows, stainless steel tees, stainless steel crosses, stainless steel reducers, stainless steel pipe caps, etc., acco

Large diameter straight seam steel pipe process flow and main equipment:① Process the two plate edges into the required form at one time. Steel plate edge milling machine: Mechanical processing of both sides of the plate used for pipe making, and making the parallelism of the two plate edges within