列表:structure steel pipe and other special steel pipe
GB/T 8162 Q345 seamless steel (07-06)
EN10297-1 C45E seamless steel (04-19)
GBT 8162 12Cr1MoV seamless ste (04-19)
GB/T 8162 42CrMo seamless stee (04-18)
GB/T 8162 40Cr seamless steel (04-18)
GB/T 8162 20CrMo seamless stee (04-18)
GB/T 8162 20Cr seamless steel (04-18)
GB/T 8162 15CrMo seamless stee (04-18)
EN10297-1 E355 seamless steel (01-30)
GB/T3077 27SiMn automotive and (01-31)
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