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zlj650 grouting reinforcement drilling rig Photos Catalog - page 59 - WorldBid B2B Market
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Production Iso 41cr4 Alloy Bars Drilling ProcessMetals - Alloy Steel - Dongguan Songshun Mould Steel Co., Ltd. - China - September 22, 2025 - 516.00 Dollar US$ISO 41Cr4 alloy bars are a commonly used structural alloy steel with excellent overall mechanical properties. Drilling Procedure 1. Punch Point Positioning: Mark the center of the hole on the ISO 41Cr4 alloy bars. Use a punch to create a small indent...