CB/T 3861 Type B Casting Steel Roller Button Ship Mooring Equipment
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... casting steel is also available. The center bearing is either stainless steel or copper or bronze. It is very easy for maintenance and easy to add grease oil to keep the roller always moving smoothly. Main Technical Specification: 1. Type: Open type 2....
Zhongyuan Ship Machinery Manufacture (Group) Co., Ltd
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