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蘭溪市馳航機械股份有限公司主要生產(chǎn)鋁合金鍛件，擁有多年的鋁合金制品鍛造加工經(jīng)驗。

R31B-XD2

CRANK MATERIAL:FORGED ALLOY-6061-T6

CRANK LENGTH:170MM

CHAINRING:52/42/30T

OUTER CHAINRING:CNC ALLOY "HBK"ANODIZED

CENTRE CHAINRING:CNC ALLOY“HBK”ANIDIZED

INNER CHAINRING:CNC ALLOY“HBK”ANIDIZED

COMPATIBILITY：9S

PCD:110/74MM

CHAINLINE:45MM

B.B.Axie:110MM(21-68-21R)

CRANK MATERIAL:FORGED ALLOY-6061-T6

CRANK LENGTH:170MM

CHAINRING:52/42/30T

OUTER CHAINRING:CNC ALLOY "HBK"ANODIZED

CENTRE CHAINRING:CNC ALLOY“HBK”ANIDIZED

INNER CHAINRING:CNC ALLOY“HBK”ANIDIZED

COMPATIBILITY：9S

PCD:110/74MM

CHAINLINE:45MM

B.B.Axie:110MM(21-68-21R)

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