1. Physical and chemical inspection and analysis1. 1 Macro inspection and microscopic morphology observation: A section of cracked tube with typical cracks was selected to observe the macroscopic characteristics. The cracks were locally distributed along the longitudinal direction of the tube body,

First, the straightness of the hot-rolled boiler tube body after straightening does not meet the requirements.1. Cause analysis: (1) The deflection value is too large or too small. 2) The reduction is too small.2. Treatment method: (1) According to the specifications, materials, and curvature of the

Forming process of steel elbow1. Die forging. For socket welding and threaded tees, crosses, elbows, and other small pipe fittings, the shapes are more complicated and should be manufactured by the die forging process. The die forging blank should be a rolled profile such as a bar, thick-walled pipe

With the continuous development of my country's economy, the country has vigorously developed the energy industry. Long-distance oil and gas pipelines are an important way to ensure energy security. In the process of oil (gas) pipeline anti-corrosion construction, steel pipe surface treatment is one

Seamless steel pipes are widely used in structural applications due to their strength and reliability. Here are six major processing technologies utilized in the production of seamless steel pipes:Piercing Process:This is the initial step in making seamless pipes where a solid steel billet is heated

Hydrostatic testing is a crucial procedure used to ensure the integrity and safety of seamless boiler tubes. This testing method involves filling the tubes with water and applying pressure to check for leaks and structural integrity. Here’s a detailed overview of the hydrostatic testing process for

Detecting the quality of small-diameter precision seamless steel pipes involves a combination of visual inspections, dimensional measurements, and non-destructive testing (NDT) techniques. Here’s a comprehensive approach:1. Visual InspectionSurface Quality: Check for surface defects such as cracks,

Identifying fake and inferior hot-rolled large diameter seamless steel pipes is crucial to ensuring safety and reliability in construction and industrial applications. Here are several methods to detect counterfeit or substandard products:1. Visual InspectionSurface Quality: Check for surface defect

When assessing the quality of SSAW (Spiral Submerged Arc Welded) steel pipes from their appearance, several factors can be considered. Here’s a comprehensive guide to visually inspect SSAW steel pipes for quality:1. Surface FinishUniformity: Check for a consistent surface finish. The outer surface s

First, an introduction to industrial high-pressure seamless steel pipesHigh-pressure seamless steel pipes and high-pressure boiler pipes are a type of boiler pipe and belong to the category of seamless steel pipes. The manufacturing method is the same as that of seamless pipes, but there are strict