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Material:St35.8, St45.8, ST52,15Mo3, 13CrMo44, 10CrMo91
Standard:DIN17175, DIN2391
Type:Seamless
Material:STKM 11A/B,STPG370, STPG38, STPG42...
Standard:JIS G3445. G3454,GB/T8162
Type:Seamless, Welded