What are the differences among the following pipe materials?
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L245, L245NB, L245NCS, L290, L290NB, L360, L360NB, L360QB, L415, L415NB, L415QB, X42, X46, X52, X56, X60, X65, 20g, 20#
Let me explain what I know first. 20g refers to carbon steel pipes used in boilers, which are primarily employed in the main feedwater pipes of boilers, the serpentine tubes of economizers, the water wall tubes, and the serpentine tubes of low-temperature superheaters. On the other hand, 20# steel pipes are ordinary low-carbon steel pipes.
For L245, L245NB, L245NCS, L290, L290NB, L360, L360NB, L360QB, L415, L415NB, and L415QB, just check GB/T9711 to find out；
There is a big difference among these materials: carbon steel, alloys, and pipeline steel