12.9 Grade Bolts and Nuts for Sprocket and Segment Excavator and Bulldozer Spare Parts
1. Our Advantages
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Through professional quench-tempering processes to guarantee excellent mechanical properties, high strength and superior wear resistance to avoid bending and breakage.
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Our quality control is strictly performed from sourcing raw materials and different machining procession to final packing.
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35 years' experience in Excavator & Bulldozer spare parts manufacturing.
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Professional sales team, maritime logistics guidance.
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After-sale services:video technical support, 24h online support.
2. Structure and Main Dimensions
3. Quality Detection
Metallic Phase Diagram
Surface: tempered sorbite and little free ferrite Grade 2.
Inner: tempered sorbite and little free ferrite Grade 2.
4. Compatible Brands
5. Hot Sales
