... carrier: 1:ISO9001.CRCC 2:PATENT XBY type online material carrier:1:ISO9001.CRCC2:PATENT Our company is a ... machine, railway ballast tamper, railway bolt wrench, rail bender , rail gap adjuster, cutting disc, grinding stone, and etc .Since its foundation ... : 20 kg/single arm, 10 kg/arms3, quality: 72 kg online material carrier