Structural Carbon Steel Tube China JIS G3445 Stkm 13A Carbon Steel Tubes for Machine Precision Seamless Cold Drawn Steel Tube JIS G3445 Model China JIS G3445 Stkm 13A Carbon Steel Tubes for Machine . High quality Precision Seamless Cold Drawn Steel Tube JIS G3445 Model STKM11A / STKM12A / STKM 13C from China, China's leading precision seamless steel pipe product, with strict quality control Seamless Steel Tube Stkm11A Stkm12A Stkm12b Stkm12c Carbon Steel Tubes
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 standard