L450M spiral steel pipe is a kind of steel pipe in API5L specification, belonging to high-strength pipeline steel pipe, mainly used for transporting oil, gas, water and other liquids.
If the L450M steel pipe is not melted during welding, the following treatment is required: clean the weld: check whether the weld has impurities, oxides, etc.
If cleaning is required, ensure that the weld surface is dry and clean. Adjust welding parameters: check whether the parameters of welding equipment and power supply are correct, and adjust welding current, voltage, welding speed and other parameters.
Change the welding method: If the adjustment parameters are invalid, consider changing the welding method, such as changing the welding method.
"1. Spiral steel pipe and straight seam steel pipe adopt L450M. Standard: GB/T9711.2. Steel grade: L450M. Chemical composition: C0.16, Si0.45, Mn1.6, P0.025, S0.02, V0.1. 5.0. Stress with total elongation of 5%: 450~570, tensile strength: Rmmin535Mpa, 7. Elongation: (Lo=5.65) √ S.)." L450 is a kind of material, belongs to pipeline steel grade, and is mostly used in natural gas pipelines.
ASME B36.10M Standard for Hot Rolled Seamless Steel pipes
Analysis and Preventive Measures of Cold Working Cracks in Seamless steel pipes
What is the purpose of Q345C seamless steel pipe
The main factors affecting the internal hole finish of cold-drawn seamless steel pipe are as follows:
