Despriciton: JIS G3445 STKM 11A STKM12A STKM13A Steel Tubes 12A …JIS G3445 STKM 11A STKM12A STKM13A Steel Tubes . STKM 12A 12C 13A 13C 15A 15C 17A 17C used for machinery automobiles bicycles furniture appliances and other machine parts.jis g3445 stkm13a, Standard: AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc. Surface Treatment: Clean, blasting and painting according to customer requirement Machining Service: Cutting, Welding, Bending, Forming, Rolling, Drilling, Slitting, Heat treatment E-mail: [email protected]
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