The process flow of PE external anti-corrosion steel pipe: raw material inspection → steel pipe preheating and rust removal → rust removal effect inspection → steel pipe medium frequency sensor heating → epoxy powder spraying → polymer adhesive extrusion coating → polyethylene extrusion coating → wa
1. Material: The material of the SMSL pipe should meet the requirements of the relevant national standards and industry standards. Common materials include carbon steel, stainless steel, and alloy steel. The selection of material should be based on the working conditions of the pipeline, such as cor
1. Material: Ensure that the welded pipes are made from the appropriate material that suits the specific application requirements. Common materials include carbon steel, stainless steel, and alloy steel.2. Manufacturing Standards: Verify that the welded pipes comply with the relevant manufacturing s
1. Surface Smoothness: The sealing surface of the flange should be smooth to ensure a tight seal between the flange and the gasket. The surface roughness value (Ra) should be within the specified range, typically between 0.4 micrometers and 1.6 micrometers.2. Surface Cleanliness: The sealing surface
Surface defect detection of rectangular tube:Rectangular tube surface defects may include surface scratches, burrs, and oxide scale, etc. The surface defect detection methods for rectangular tube usually include visual inspection, touch inspection, eddy current inspection, X-ray inspection, and othe
To protect carbon steel pipes from rust and corrosion, the following steps can be taken:1. Surface Preparation: The surface of the carbon steel pipes should be cleaned thoroughly to remove dirt, grease, and rust. This can be done by using a wire brush, sandpaper, or abrasive blasting.2. Primer Appli
Most merchants did not use the straight seam steel pipe soon after purchasing it. So is there anything we need to pay attention to in the storage of straight seam steel pipes? The staff of the straight seam steel pipe manufacturer reminded us that the correct storage method of the straight seam stee
1. Appearance inspection: Check the pipe joints for obvious cracks, corrosion, deformation, wear or other defects that may affect their performance.2. Pressure test: Test the pipe joint under the specified pressure to verify whether it can withstand the expected working pressure.3. Leak detection: U
Some common problems with resistance welding include:1. Overheating: This occurs when excessive heat is generated during the welding process, leading to damage or distortion of the welded parts.2. Electrode wear: Frequent use of electrodes can cause the tips to wear out, resulting in inconsistent we
The ERW pipe flaw detection method mainly includes magnetic testing, ultrasonic testing, and visual inspection. Among them, magnetic testing is the most commonly used method, which can detect internal and external flaws of the pipe through magnetic induction and magnetic flux measurement. Ultrasonic
