1.AISI5140 material 2.API spec 11 B standard3.Longer service life 4.Nickle wear resisting 5.high quality with competitive price
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YANTAI YUNSHENG PETROLEUM MACHINE ACCESSORIES CO., LTD.VIP会员第12年
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1.AISI5140 material 2.API spec 11 B standard3.Longer service life 4.Nickle wear resisting 5.high quality with competitive price