12.9 High Strength Grade Segment Bolt & Nut OEM Excavator Fastener Parts M12 M14 M16 M18 M20 
	
	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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		100% quality assurance, develop and manufacture follow or even exceed original ones.
	 
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		35 years' experience in Excavator & Bulldozer spare parts manufacturing. 
	
 
	
 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. Our Advantages 
	
 
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		Factory sale directly with reasonable price 
	
 
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		Custom-made products are available 
	
 
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		35 years' experience in Excavator & Bulldozer spare parts manufacturing 
	
 
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		Flexible payment terms including T/T,L/C and so on 
	
 
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		Fast delivery within 30 days after contract established 
	
 
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		Professional sales team, maritime logistics guidance 
	
 
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		After-sale services:video technical support, 24h online support 
	
 
	
 
	5. Hot Sales